Fuel pressure regulator problem GM
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- čas přidán 28. 08. 2024
- How to check fuel pressure on a general motors truck and what easy checks you can do to diagnose a fuel pressure regulator problem
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I had a P0300 code on my 2003 sierra 1500 SLE 5.3 for the last month or so. almost all the videos I watched where from guys trying to promote their channel and helping stiffs like me was secondary. I thought it was suppose to be the other way around. I had thrown in the towel and made an appointment to take it to the dealership for service in a couple of days. . I came across your channel this afternoon and thought I'd check the fuel pressure regulator. once I pulled the vacuum hose off, fuel came dripping out. did the fix and didn't even break a sweat replacing the part under the Arizona heat. You just saved me a few hundred bucks. I did not find one video on a P0300 fix on you tube that suggested checking the fuel pressure regulator. Thank you brother.
Glad I could help you!!!
For anyone viewing this video and hesitating dont this guy knows what the heck is going on with this problem. My truck had been to the dealer and multiple mechanics and nothing. It took about 40 minutes and it was done. I wish I lived by this guy I would make him my mechanic for the tough stuff and jobs I dont want to do.....Thanks again for this amazing tip.....
Great video, it fixed my 2002 Silverado 6.0L. I was having long cranking symptoms when engine was at running temperature, also the truck was running very rich, and had a rough idle. Saved me a lot of time diagnosing the issue. $70 part and a couple minutes to install.
Did the truck make a ticking sound ?
saved me a headache trying to figure out why it would not start right away. This video showed the exact problem with my 2003 Silverado. Thanks
welcome, thanks for watching glad i could help david
Thanks for the video. My 2500 6.0L was displaying signs of loss of power loss off idle and gradually started to not idle at all. A new FPR seemed to have fixed it and I appreciate the ease of replacement that GM designed into the design. My 1990 Corvette needs the upper plenum removed and gaskets to do the same job. 15min vs 2 hrs. My AC Delco from the local ship was a bit more at about $100. Thanks again.
Thank u so much for this video it really help a lot as soon as u show in the video that no fuel should be present I the fuel pressure regulator I went out and sure enough fuel was coming into the regulator replaced it and my truck runs like new
God bless u for helping others
mg
mg
I just checked as well and am about to head to AutoZone for a new one
You're a very good teacher.
thank you for watching, glad to hear i helped. ive seen a lot of money thrown at these vehicles that wasnt needed
Having rough idle/stalling after my gas got really low. Hoping i didnt burn out the fuel pump. Going to test the fuel pressure first and go from there. Your videos are VERY informative and easy to understand, even for a chick with 3 traumatic brain injuries, lol
Val Hopkins did you ever found out the problem?
Thanks mate, you're a 'Fair Dinkum' legend!
Had all sorts of mechanics paid to look at our Grand Am with no joy, I thought it was funny that fuel was going through the vacuum hose and you confirmed my suspicion.
Never worked on fuel injection systems before, it's been a learning curve for this Aussie!
Thank you so much. I’ve been dealing with the hard start issues for over a year and you gave me the answer
This is a really easy job to replace this regulator. My 2003 suburban needed a new regulator and I did it within 15 or 20 minutes. The regulator on the flex fuel system mine has is a little different than the one pictured here. The vacuum connection is on the end and not on the side like in this video. There is no screen either for the part I got. There's 2 blue O-rings and one black spacer. The spacer goes on the inside end of the regulator followed by the larger blue O-ring. The small blue ring goes inside the regulator housing and is easy to get out with a pick. Even though you relieve the pressure prior to starting the job through the Schrader valve, quite a bit of fuel still comes out when you remove the regulator so make sure you have a large cloth towel underneath it and only do this with the engine cold. Once you push the regulator in place and connect the clamp and vacuum hose cycle the ignition two to three times to bring up the fuel pressure and then start the engine. Very easy job. Thanks for the great video!
condor5635 hxcv. bcc 77th g dada afm7
Are you talking about a diaphragm kit? A new fuel pressure regulator is about $170. The diaphragm kit is about $40. This is exactly the issue I've been having with my 1994 Sierra!!! Thank you!!!!
That's exactly what I do to turn on my Father truck again. I never knew this could be the problem.
Thanks.
Joe, thank you for posting this video. I have been having trouble with my 6.0L and this has solved it.
VeritasAequitas did it take a couple try’s to start ? Cause I’m having an issue with starting
Great to hear! I also bought and have a 2003 Silverado 6 lt. Changed the fuel pump expecting it to start right up! Not. Just checked spark, yes. And non running fuel pressure is 28 lbs. Not sure what to do next. Just watched this video, perhaps that's my problem?
OK I dont know where to start but THANK YOU.... Guy this is the answer right here I stopped at the autobarn on the way home picked up the part about $70 not bad I thought. I came home a bit hesitant and then started hoping and praying that this was the answer and yes this quick fix KICKs AZZ. I have to say that I was kinda not sure if it would work but the engine turned over stronger than it ever has before, it also ran smoother than ever and to add all the best on top. CHECK ENGINE is OFF!!!!!
Thanks for the video. I had a problem with my 1999 Silverado starting hard after it warmed up. After replacing the fuel pressure regulator it starts right up. My regulator wasn't leaking fuel but apparently there is a spring inside of it that was sticking.....
thanks for watching. glad i could help. once you get used to hpw they work fuel injection is a very easy system to work on. glad i could help
Thanks for the video. I just changed my fuel pump, fuel filter and had to replace the plugs, wires and coil packs on my 2002 Chevy Silverado and I’m still having problems with it starting. I even purged the air out of the gas line and still nothing
Do you have a cable operated throttle body or drive by wire throttle body?
Thanks, I realize this video is old, but this is the exact problem I have.
Mine isn’t leaking, but I’ll test it by taking the vac line off.
Truck runs well I general, but when idling it almost seems like a misfire, but no codes.
But every other time it starts it needs to crank for 3 seconds.
If you are having trouble starting your truck after installing this, put a bit of oil on the o rings and really try and create a good seal. It is harder than it looks to put back in place. Twist and push. Also, be careful with the small o ring. I dropped mine in the fuel rail and it was a pain to get out.
Your a life Saver Thanks..Much Blessings
Thank you very much it was very helpful the information that you gave me on a few pressure regulator
Joe, your vid helped me a lot to diagnose my problem.
welcome thanks for watching
Changing mine as we speak. Thanks
thanks for watching, glad i could help yea. seems like a great chance it the regulator
Hey man, i see you still answering the questions, so I thought id give it a try. 2008 Hummer H2. After some time, i think like 10 min it long cranks before starting. When i turn it off, and try again starts just fine. My guess it can be losing fuel pressure?
I'm stuck at 20PSI. No bouncing no dropping just 20PSI. I think i bought a defective fuel pump.
Thanks for the video.
What was it?
What was the issue?
i would have your battery tested and check the connections, this is usually the case of the symptom your describing, although its hard for some shops to test side mount batteries i would still do this. other than that the starter connection on the bigger wire that goes from the solenoid to the starter motor itself tends to get corroded and this can cause those issues you speak of. THANKS FOR WATCHING
Thanks for the video there's lots of videos out there about the fuel regulator but I think yours is one of the best ones
thanks im glad you think so, thank u for watching
JoeTheAutoGuy hello been having an intermittent hard start problem,pulled line to pressure regulator no gas came out.started truck and allowed to idle for a couple minutes,shut off engine and "poked" the schrader valve and not even barely a hiss.this leads me to believe the system isn't holding pressure as it should, anything i should test besides the fuel pump and filter?say return line,injectors? both the pump and filter are "fairly new" and once started the truck runs like a champ.its a 2000 sierra 4wd with 5.3l. thanks in advance for any advice/suggestions.
So, if your vehicle starts and then suddenly stalls seconds later, check your security light to see if it blinks (mine did 3 times) then stays on. If this happens, start your vehicle, when it stalls just leave your key forward, this could take ten minutes or so, but wait until your security light turns off. Then turn your key to the off position for 10 seconds, then start it. This will reset your VATS ( vehicle anti theft system ) to recognize your key again. Thiis was on my 99 suburban. Getting a new one made from the dealer would be a good idea once this happens. Hope this helps!
Great explanation. Mine does exactly what you say, early morning cost to start. After when hot drives all day. Then the next day same rutine. Century 92. 3.1 engine
Did you replace the regulator? Did it solve your issue?
This guy rocks!
i had a split in that rubber boot , new vacum line was $29 US at the dealer. if you replace a regulator a light film of grease around the new regulator will help it slide back in easy..
How can you tell the difference between a problem with the fuel regulator from a problem with the fuel pump?
Scotty Kilmer has a video about the fuel pump
About the pump czcams.com/video/JoWZz1ckRGw/video.html
Great vid, is there a part number? I cannot seem to find it? 08 4.8L sierra
Ey thanx for posting this vid up in the morning lately my truck wont turn on sometimes like almost turn on kinda like weak turn then second or third it does turn on normal it happens when it sits at night then morning I turn it on and it just feels weak berly started this problem silverado 07 classic 4.8
Would a bad fuel pressure regulator cause intermittent non start. Every few weeks. 6.0 acts like it not getting fuel. Come back later starts fine. Thanks for any advice
Thank you that helps
Hey thanks for the upload. My '03 Silverado V6 is having a rough start, rough idle and smells very rich. I've changed the MAF, fuel injector, plugs and wires , and cats.
Would a faulty fuel regulator cause the truck to run rich and stutter? also the CEL is on and flashes at low speeds. Thanks.
Did you ever figure this out? My truck is doing the exact same thing
Do I need to change the fuel release sensor along with the pressure regulator
Hey joe I recently replaced the fuel pump on my 02 Silverado 5.3 and it now starts perfect and idles perfect for about 3 minutes till warm then starts to idle poorly as if it has a small cam
when you say small cam is it tuned?
Thank you for this video, brother...exactly what was wrong.
Jordan Lunday glad i could help
I have a 2000 f150 4.2L I've been having hard starts after warm-up I've thrown parts at it like crazy haven't replaced the fuel pressure regulator yet I'll give it a try see what happens.
I have some kind of truck gonna try this hopefully this take care of problem
thanks for replying yes a hole lot.. ...wud changing the top intake manafold help cuz i was thinking bout replacing it wit a new 1
I removed the throttle body and i cleaned very well front and rear side and the screen at the end of the about 1 inch pipe that enters the intake and I also cleaned a little dipper insire the intake and then i replaced the idle air control valve +fuel ingector pressure regulator + map manifold absolute pressure sensor
And fixed the problem
So I recommend you guys to do that.
Thank you so much, I'M having the same problem I changed the Ian,yes cleaned the throttle body and mad car idles low like and sometimes cut off
fuel pressure is very finiky on most models ive seen 6 psi cause major driveabiltiy issues
So your fuel pressure should be at 60-66psi although with the v6 yours is located under the upper intake manifold on the spider injection assembly , not to hard but does take about 2hrs to get to
On my 99 nbs sierra 2500 with the 5.3 I picked up a fuel pressure gauge and noticed with the engine running I have a very rough pulsation between 48-52 psi, already replaced the fpr twice, first time for it being a busted diaphragm on the original , second one because it started a buzzing sound. With the breather hose off the FPR the psi goes to a solid 60 psi, engine off key on psi is 50-54 psi steady. Replaced both fuel rails and the buzzing/vibration sound is still coming from the FPR, and stops with the breather hose off. Driving me nuts.
key off steady pressure is normal , fluctuating at idle is most likely a faulty fuel pump provided you don't have any vacuum leaks making the pressure drop because of the computer commanding the injectors open longer to compensate for extra unmetered air if the fpr is buzzing warranty it
JoeTheAutoGuy
Thanks for the advice, going to look for vacuum leaks when it gets a little warmer out. Seems like the intake gasket issue these trucks have might be playing a role in this , so many people have this same exact issue... possible just a small leak can be causing this, not enough to throw any codes. Ill report back my findings when I can.
warphace
no problem let me know how things turn out
thanks man good video... my light came on P0300 ( misfire) truck ideals crazy in the morning but runs fine when warmed up.
Thanks for watching! Still having the P300 code?
JoeTheAutoGuy yeah it came back on whn i started it after work, the funny thing is i got gas then the light went off for about12 hrs then came back on.. i dropped it off at a shop tht got me in right away... being christmas and all i didn’t wanna take any chances
What did your p0300 issue end up being?
thanks that is the first time anyone has suggested that i woill look into it
Possibly on the Vortec 5.3 also? My 99 Silverado 1500 cruising at about 60mph it kind of tries bogging down but if I give it more gas it runs fine, then if I'm in deep snow or mud it also acts like its not getting enough fuel. I did check the fuel pressure and it was in spec but that's been awhile ago. It only recently started doing this in the deep snow. My oil pressure was always at a solid 40 and is now around 35.
Cold weather on the oil pressure?
Did you find out what was causing the bogging down, i have a similar problem of bogging down and hesitation but if i give it more gas it will clean up.
Thank you for your input and history lesson...
Any time!
My 2002 2500HD 8.1 has the starting problem you describe. But it also stalls, but then will start again. I haven't been left on the side of the road. The guy I took it too first replaced the relay, and that helped for awhile. Then he replaced the fuel pump (for big bucks) and that helped too, but the truck still stalls. My buddy told me to to start it up at night and watch for spark on the plug wares, but I didn't see even a flicker in there. The plug wires have never been replaced tho.
Mine is a 2009, now would the fuel pressure regulator still be in the same place? I’ve been told that it’s added in with the fuel pump and I’d have to replace the actual fuel pump.
Can this cause a P0332(2 of 2) Generic Pending
Knock Sensor 2 Circuit Low
Voltage Bank 2 code or it’s for sure the knock sensor and connectors
Great Help. THANK YOU!
1999 gmc sierra 1500 5.3l engine. I'm having the problem of needing to crank it a few times before it actually starts, I've changed spark plugs and wires, and battery, still does it. I did this test you've shown and the regulator didn't have any oil. I don't see leaks under the truck and it doesn't die when idling or driving no matter how far the drive. any suggestions? I can't waste too much more money. thanks.
Thanks Joe I took the box off just to get a good look at my truck and the charcoal canister I see fuel around fuel pump on the driver side working it's way to the front of the truck I'm thinking maybe gasket
Joe thanks for the video I think i found my problem! Now if you take off the vacuum tube off when its off is it still bad to see gas come out? I didnt see much with the truck on but with the truck off a good amount came out
kylie arena if fuel comes out then the diaphragm is ruptured ..no fuel should be present. so the part is bad
This may be my problem. But my 02 gmc extra cab starts up fine at home but garenty the next place I stop it will not start up on the first try. It idles ruff when just running at some point it will almost die but then pick back up. I was thinking fuel sending unit but this seems likely.
I have a 02 surburban 5.3 1500 4x4. Will this also fix the unusual voltage drop I get constantly?
My vacuum hose to my fuel pressure regulator is cracked all the way up.... Can this be a problem
Yes it will start leaking gas. I just found out that on my 5.3
Hey I have a 2006 Gmc Sierra 1500 and mine does this same thing but it don't have a fuel pressure regulator on the rail
just a small pick will remove the o ring, its possible that its the FPR but to test it just pull the vacuum line off and let it run for up to two minutes if it spits gas at all in that time period its faulty
2003 suburban 1500 4x4, replaced fuel filter underneath. After cranking no starting. Checked pressure regulator no gas out. I'm stumped ongoing troubleshooting. Could this still be culprit. I got light spurt of gas on off then ignition on from strader valve. Any thoughts?
usually with the fuel pressure regulator leaking or any fuel leak at all will eventually smell like gas inside the car, the regulator will smell like fuel as usually they act up upon start up when the engine is cold so when it is colder and the engine demands more fuel the smell is more apparent. i would assume this is the route to take in solving your issue
my 2002 chevy 1500 silverado 5.3 is starting but dies a couple seconds later. i replaced the fuel filter truck ran good for about 30 miles then stalled going about 60mph pulled over and truck will not start now. will start and not stay on. and you can't hear the fuel pump turn on, do you think its the fuel pump?
ive got a question for you??? my 4.3 v6 5 speed, is getting NO codes!!!! it starts right up while under load im getting a slight jerking while driving, ive changed out the coil, control module, plugs, cap, rotor, wires, and fuel filter......its becomes more prevalent when its warm. Any ideas or have you experienced this in your business? thanks again, Vince
I get the same problems, any fix?
Hey Joe, my 2002 Chevy Tahoe 5.3 takes forever to turn over when it's cold in the morning. Once it's warm there's no issue. Early morning late nights it may take 15-20 minutes to get started. Any ideas what this could be?
+Karim Rahim weak battery could be a issue as when it warms up the vehicle has a surface charge from the vehicle running, if it is a extended crank issue i have seen the throttle bodies have issues with minimal build up. i actually have a video in the works for this specific issue
I don't get any reaction when i pull the regulator vacuum line, should I? Truck is throwing codes for lean conditions on both banks, cant find anything wrong with spark
After my 2005 8.1 vortex gets to temperature after 20 miles of driving it starts losing power spits and sputters won’t get over 40 miles an hour any suggestions
That's what everyone was telling me but I know It's not the problem. If it was it would do it all the time. I figured it out & fixed it, my fuel injectors were leaking.
yep sometimes its just that easy, i hope i helped you in some way
Joe I love you for what you've shared,
Mine went bad again after 3yrs
Does this test work it the engine is not running?
I have good fuel pressure...turns over all day...won’t start.
I took the vacuum line off and turned the key on, fuel come blasting out of the regulator.
Great Video... Really helped me..Thanks!
My dads gmc cargo van smells like gas inside the car and he can’t seem to fix the issue. The smell is really getting to a point where he’s getting side affects and feeling dizzy. Do you think changing the fuel pressure regulator will help this issue? Thank you in advance
My 95 Saturn SC2 started good first start of the day but then had a rough idle that bounced up and down in rpm but only did this after it warmed up for a few minutes. If I shut it off warm it would restart quickly but if I waited to restart 5 minutes or more it would crank and crank before sputtering to a start. Also didn't accelerate as fast as it should. Changed the IAC, TPS, plugs, wires, fuel filter, checked the coils and were good. Unplugged vacuum hose to FPR, spit gas. That was the prob.
2005 suburban with 5.3L v8 (non-flex)
Idle RPM will sporadically bog down and go back up normal. Other times it's fine. No pattern to it nor any known indicator of reason... started out of the blue. No light or codes. No issue starting. Cleaned MAF & Throttle Body with no improvement. Today is sputtered and hesitated once while driving. Increasingly worsening it seems.
Thinking its FPR? Or TPS?
Any acess to a scan tool to read fuel trims
@@JoeTheAutoGuy I hooked it up earlier.... can I connect it tomorrow and report back what it says?
It shows short & long fuel trims, o2 sensors and other live data.
Edit: I dont have the FPR on the rail like you do either... I looked high and low for it. I think mine is with the pump in the tank. 😮🙄🤬
variable pump on your model no regulator to replace unless fuel pump has issue . what are your fuel trims while running and when it has the isssue ?
what year is the Beretta, its possible you have a vacuum leak causing the hesitation, or a fuel regulator , possible , might even be an issue with a crankshaft position sensor . its hard to say but i would go about checking for vacuum leaks
Do you know what causes these to go bad? I've changed 4 in the last 3 years
I have a 01 Silverado 2500hd
@LoraxWoWgod make sure u grounded the fuel pump I think on 88-98 trucks it grounds on the chassis near the gas tank get under there and check that might be it
Hope you respond to this. This seems to be a possibility. But also what about the fuel pump. I had a 99 s10 and the same problem occurred. I have a 03 yukonXL right now and its showing the same symptoms. When I'm idling and rev it, no problem. Only when I'm moving does it start sputtering.
i would check for a vacuum leak and make sure the ignition is in good order if it is worse under load fuel pressure can be a possibility . any check engine trouble codes?
Thanks For The Video ! My Problem Excatly
Hi, I have an 02 2500 HD with a 6.0 and mechanic could not fix, getting to much gas thru the motor, oil pan had 4 extra quarts of gas/oil in it and it runs really rich on the drivers side. Could this be the pressure regulator?
The Comedy Web Dot Com to much fuel pressure can be a bad thing, this could be caused by the regulater, more likley is you have an injector thats stuck open this could be a injector or the circuit ground control through the pcm if your getting a dtc code for running rich i would follow the flow chart for diag, if you have a measured 4 quarts of fuel contaminated oil (sight is not a acutrate measurement) you most likley have an injector system issue. and damage has already been done to the bearings andd upper cylinder wear as lubrication would be comprimised
JoeTheAutoGuy Thanks for the info, I drained the oil and changed it and it was about 4 quarts.Took to a mechanic and he said he tried injectors from another truck, not sure he did. I ordered a pressure regulator and will try that.
Where is the best place to buy one? Are the really cheap ones any good?
Great video Joe. I have an 02 Silverado 5.3 and it misfires only when cold. Looks like coils are good, what could it be? Crank sensor, manifold leaks, Bad cat converters? Please if you or some one knows let me know! Thanks
You got broken valve spring
It's either a bad intake manifold gasket leak or the plastic intake manifold is cracked and leaking. There is a TSB about this and the FPR for the Vortec 5.3 Gen 3 (1999-2006) motor.
just look up pcm i no now changing the intake wont help.i will check wat u say an see what happens thanks joe
Is it any different on a v6 motor? I have a hard time finding the fuel pressure regulator
thanks for the video...solved the problem..
RCbasheracer glad i could help
ive 97 gxand prix gt 3.8 an my car died, it acted like it ran out of gas, then engine light came on, checked it an got p0300 random misfire. worked for a day an then happened again an no fuel getting to the fuel rail. Any idea's?
1996 Chevy Silverado. Very hard start. Takes lots of cranking. Even weirder, sometimes it loses all power while cranking. If I wait, I get power again.
Once it starts, it runs fine. Thought it might be the fuel pressure regulator. Pulled the throttle body and peered inside. Everything, including the bottom of the butterfly valve, is covered in black gunk (carbon?). Saw elsewhere this might mean it's the fuel pump pulsator. Any opinions?
had similar issue on my 99 silverado, i cleaned out throttle body and entire intake,including maf sensor, cost about $18. total for liquids, issue stopped, big big difference,,, hope this helps,
Craziest thing is it will run like a gem when it does actually start and run. I will pick up a fuel pressure regulator on my way home today. Are there any special steps prior to changing it other than just replacing the part. That sounds rather simple but if there are any steps that I need to know or do prior to pulling and replacing the part?
I have a c4500, the rpm is very low, it works fine and after it idles for a while it stops and it takes about 15 minutes of pumping the fuel filter several dozen times to start it again
If it's bad would it spit and sputter when starting and want to stall out have to give it gas to keep it running...and just recently went to start it but wouldnt start just turn over
If the regulator is malfunctioning will that pop the check engine light on? Just curious. I'm having this problem with my gmc Jimmy suv.
can sometimes sometimes not , im asssuming your jimmy has the 4.3 which is not outlined in this video and can have some different possibilties to the issue
Joe, how are you doing? I was wondering if you could help me with the problem. I have a 2007 GMC sierra SLE 4.8 L and it holds 26 gallons and I’m only getting 300 miles to a tank to 270 miles sometimes The truck runs good the truck starts good everything seems to be normal. I change the eve app canister I changed the throttle position sensor I clean the throttlebody. I change the gas cap and I’m wondering why I’m getting such get better gas mileage. It almost seems as if the fuel pump is sending too much fuel yet the car I mean the truck starts fine runs fine idles fine but it’s sucking gas. Any thoughts?
Feel free to email me at Joetheautoguy@gmail.com
My 2000 gmc jimmy fires up and runs fine but when I get to about 30/40 kmh or miles a hour it try’s to stall out but if I give it gas it will pass 40 and drive normal again. Any ideas.?
THANKS FOR THE VIDEO. my 99 yukon will start fine most of the time,but if it sits for a day or so i'd have to start it 2-3 times before it ran.
Hey i have an 05 silverado with a 4.8 & a couple days ago i put it in reverse & wanted to stall out also with drive but engaged it in park & revved just fine. Could it be the fuel regulator? Thanks in advance!!