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Fuel pressure regulator?

Tiny
GERRIANNS
  • MEMBER
  • 2002 CHEVROLET BLAZER
I have an 02 blazer, it would stall while driving, just quit. I replaced 2 fuel pumps in 6 mos. The car would hesitate prior to stalling. I put fuel injector cleaner in the gas and it ran for about 2 weeks when it stalled again yesterday. It seems that if you let the car sit for awhile and cool down it will start and run again. This is and intermittent problem. After talking to several people I was thinking of replacing the fuel pressure regulator but I cannot seem to locate where it is. I have asked at auto zone and Murrays and they cant find it either. Can anyone tell me where to find it and how to do it? Thanks
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Sunday, June 29th, 2008 AT 1:06 PM

35 Replies

Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
To find the fuel pressure regulator you will have to take the Plenum off...... it is located in the center of the picture....


https://www.2carpros.com/forum/automotive_pictures/188069_IM000109_1.jpg



If I may ask were do you live, I ask because you mentioned Murrays....
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Sunday, June 29th, 2008 AT 1:24 PM
Tiny
CJILLSON7030
  • MEMBER
  • 6 POSTS
  • 2001 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 116,000 MILES
How much should it cost to replace a fuel regulator on a 2001 Chevy Blazer 4wd?
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Monday, December 28th, 2020 AT 11:40 AM (Merged)
Tiny
ZACKMAN
  • MECHANIC
  • 4,202 POSTS


https://www.2carpros.com/forum/automotive_pictures/55316_01blazer_1.jpg



Plus cost of part, shop supplies and tax, of course.
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Monday, December 28th, 2020 AT 11:40 AM (Merged)
Tiny
MSDOLPHIN
  • MEMBER
  • 14 POSTS
On my 1997 I was quoted $453
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Monday, December 28th, 2020 AT 11:40 AM (Merged)
Tiny
CJILLSON7030
  • MEMBER
  • 6 POSTS
Thanks!
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Monday, December 28th, 2020 AT 11:40 AM (Merged)
Tiny
DEAD01BLAZER
  • MEMBER
  • 1 POST
  • 2001 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
Got a 2001 Chevy Blazer, 4.3 Vortec 6cyl. Csfi Where exactly is the fuel pressure regulator located? Cant seem to find visually Dont see exposed fuel rail Do I have to remove the intake manifold? Can take a picture of engine if that would help of course its snowing now!
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Monday, December 28th, 2020 AT 11:41 AM (Merged)
Tiny
MOHMAN
  • MEMBER
  • 2 POSTS
I have a 4.3 6cyl. 2000 chevy blazer with the vortec. The regulator I hate to say is under the manifold with the spider injector. Im having the same problem with mine. The engine cranks but wont start. The pump is working and the filter was changed. Good luck Ive learned my lesson with this Chevy. Here are diagrams to help you see what I am talking about. Check out the diagrams (Below)
Image (Click to make bigger)
Thumb
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Monday, December 28th, 2020 AT 11:41 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
This was the problem with my car, runs great now got the new spider from Amazon for $210.00 Love this site.
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Monday, December 28th, 2020 AT 11:41 AM (Merged)
Tiny
BOPPER23
  • MEMBER
  • 2 POSTS
  • 2000 CHEVROLET BLAZER
Engine Mechanical problem
2000 Chevy Blazer 6 cyl Four Wheel Drive Automatic

where is the fuel pressure regulator on a 2000 blazer 4wd v6.
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Monday, December 28th, 2020 AT 11:41 AM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Inside the intake manifold
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Monday, December 28th, 2020 AT 11:41 AM (Merged)
Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
Under the upper section of the intake manifold. On the rear of the injector assembly. If it was mounted on the front you could change it without opening the intake.
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Monday, December 28th, 2020 AT 11:41 AM (Merged)
Tiny
GINAMANFREDO
  • MEMBER
  • 2 POSTS
  • 1999 CHEVROLET BLAZER
Engine Performance problem
1999 Chevy Blazer 6 cyl Automatic

I tooked my car to the mechanic two weeks ago. The car had its tune up and a week later, they replaced the gas regulator, because had a gas leak problem. After that the Engine Soon Service light came on. The codes problems are P0171 and P0174, which means the engine is running lean. The mechanic check the vacuum lines, clean the inyectos and clean the oxygen sensor. But the light is still on. Could you help?
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Monday, December 28th, 2020 AT 11:42 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Most likely when he replaced the regulator(which he had to remove the intake plenom) he damaged the intake manifold gasket and he should take care of the repair if he is reputable. Let me know how you make out
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Monday, December 28th, 2020 AT 11:42 AM (Merged)
Tiny
JSNEESE2010
  • MEMBER
  • 1 POST
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 16,000 MILES
My Blazer is hard to start (can smell fuel when trying to start) and doesn't have much pickup when accelerating. I have been told it need to have the fuel pressure regulator replaced and this is very expensive. Is this correct and how do I know what it should cost?
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Monday, December 28th, 2020 AT 11:42 AM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
May want to start with replacing the fuel filter first. clogged fuel filter could cause these symptoms. if filter is clean then a bad fuel pressure regulator could definitely cause these same symptoms. estimate is below for having your vehicle's fuel regulator replaced.


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_1290.jpg

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Monday, December 28th, 2020 AT 11:42 AM (Merged)
Tiny
AJTOSI
  • MEMBER
  • 2 POSTS
  • 1997 CHEVROLET BLAZER
Engine Performance problem
1997 Chevy Blazer 6 cyl Two Wheel Drive Manual 200k miles

ive had this car for about 2 mths when I go to start it, its hard to I spray some starter fluid in it and it fires up and is fine , latly it was starting to bogg out then now it wont start , fuel pump primes, pressure goes up to @60 then immedetly drops, I think it is the fuel pressure regulater how do I manually check it?, Do you think its the spider injectors, I v already took it off and dont know how to do it manully feel free to call me at 321 322 8238 I need help
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Monday, December 28th, 2020 AT 11:42 AM (Merged)
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
I dont think its the injectors, at least not yet. Sounds like your on the right track with the pressure regulator. I would check the fuel filter first before going to the regulator. If the filter has been changed and still acting up. While the car is running. Pull the vacuum hose off of the pressure regulator, there should be no fuel leaking out. If so, the diaphram is at fault, replace it
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Monday, December 28th, 2020 AT 11:42 AM (Merged)
Tiny
AJTOSI
  • MEMBER
  • 2 POSTS
Thx for the response, it has a new fuel filter, regulater is good, new one in there, I put it back 2 gether and im getting iol, and fuel coming out the tail pipe, and a sluggish fell to the car, I think that is the injectors, I think I put them in wrong or ###### them up when I tried to clean them what do you think? Thx
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Monday, December 28th, 2020 AT 11:42 AM (Merged)
Tiny
PBRADLEY
  • MEMBER
  • 2 POSTS
  • 1995 CHEVROLET BLAZER
Bob and Ken,

Thanks - used your service to debug my "rough start - gas smell" problem to a leaky fuel pressure regulator in my CPI. I replaced the regulator and the car ran perfect - problem solved! But hold on - after just one hour of driving I'm back to the exact same problem all over again. Looks like the root cause is something else breaking the pressure regulator. Could this be excessive fuel pressure from the pump? Is there some part of the CPI that could cause this?

95 chevy blazer, 4.3L V6, VIN "W", 150K miles

thanks in advance for you help

paul
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Monday, December 28th, 2020 AT 11:43 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Does your 95 have the aluminum upper plenum on the intake?If so, they had some other problems with the fuel lines inside the intake getting leaks, this could be why the problem came right back. You can remove th eupper intake and turn the key to "on" position to look for fuel leaks. You will probably have to clear the PCM afterward
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Monday, December 28th, 2020 AT 11:43 AM (Merged)

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