|
|
|
Auto Repair Talk - Ask a Question, Get a Free Answer
Welcome to our question and answer forum. Our Technicians and members answer over 10,000 free and donated auto repair questions every month. Asking a question is free of charge, just sign up to our forum. However if you elect to donate a small sum we will guarantee an answer from one of our 2Carpros.com certified technicians. Due to the nature of car repair problems it sometimes requires some dialog between our technicians and you to get your problem solved. 100% of the donation is awarded to the technicians helping you, questions with donations are answered as promptly as possible. If you are unsatisfied with our answer we will gladly return your donation.
Fuel Pressure Regulator
| |
|
|
|
|
Posted at Fri Jul 20, 2007 9:14 am |
|
By
Tahoe222,
New to the forum |
|
Give Feedback | Votes: 0 |
|
|
|
|
|
1997 Tahoe, 5.7 Vortec , 4x4 @70k miles.
loosing fuel pressure:
Removed intake manifold to replace fuel pressure regulator: Existing regulator has no vacuum line attached to nipple. Manual says it should have one. Don't see any possible routing for vac line if it is missing. Has it been removed? Any ideas?
Also replaced fuel pump and now it is noisy in fuel tank, (maybe too much fuel returning to tank since no vacuum to pressure regulator). Maybe burst return line on pump assembly in tank. Sounds like it is pumping air or high pressure fuel through burst line iin tank. |
| |
Find a
car repair manual for your Chevy Tahoe Repair Question.
|
|
|
|
 |
|
|
|
|
Posted at Wed Aug 01, 2007 2:52 pm |
|
By
LEB,
Likes cars! |
|
Give Feedback | Votes: 0 |
|
|
|
|
|
I'm not sure which manual you are utilizing.
The fuel pressure regulator, as you saw, does not have a vaccum line connected. So, what you found and put back together is correct.
I'm also not sure what you mean by "noise in the fuel tank". If you replaced the pump, filter (which you don't mention, but is "reguired" to have the warranty on the pump, and which I assumed you did) and pressure regulator, you might look at the ERC solenoid. Could this be causing the problem?
At least you've done all the hard work.
BTW, did you have any error codes before changing the fuel pressure regulator (most often you would have had one if the pump or regualtor needed replacing) and do you have any codes now? |
| |
Find a
car repair manual for your Chevy Tahoe Repair Question.
|
|
|
|
|
|
|
Posted at Fri Aug 03, 2007 12:14 pm |
|
By
Tahoe222,
New to the forum |
|
Give Feedback | Votes: 0 |
|
|
|
|
|
I'm using a Chilton Manual, covers all trucks late 80's to 1998. After removing the manifold they say remove the vacuum line to the pressure regulator, maybe it's generic, one size fits all.
Photo attached:
Regulator nipple is facing up for camera only, should face down (Rotate 180 Degs)
To Date:
New Pressure Regulator
New Filter
New Fuel Pump Assembly (2)
I took the new pump out again and got another replacement from the parts store. Worked fine for a day or two, no noise. Now noisy again. Sounds like a gurgling sound, hard to explain.
Pump brand is Master ($215). Probability of 2 bad pumps is low. Plan to take it out again and buy one from the Dealer ($325) ? Third time lucky. Am getting good at dropping the fuel tank now.
No Trouble codes ever. Hard starting initially after standing for 1- 2 days, fuel pressure drop. Now starts every time.
Not familiar with ERC Solenoid. Will research.
Thanks |
| |
Find a
car repair manual for your Chevy Tahoe Repair Question.
|
|
|
|
|
 |
|
|
|
Make a small donation! (We will make
sure your question will be answered promptly)
|
| |
|
|
|
| |
|
Find a repair manual
for your car - Get instant access to your
vehicles drive belt routing, wiring diagrams,
trouble code information and other available
updates and factory bulletins. Click
here to find out more. |
|
|
|
|
|
|