gmc forums   gmc forums
Go Back   GMC Forums > GMC Vehicles No Longer In Production > GMC Sonoma Forum

GMC Sonoma Forum Forum for discussions regarding the GMC Sonoma


ATTENTION: We're looking for moderators. Is anyone interested?
GMC Forum: What are symptoms of a bad fuel pressure regulator for a 1998 GMC Sonoma?
Reply
 
Thread Tools
  #1  
Old 09-20-2009, 10:17 AM
BOBBY BOBBY is offline
Junior Member
 
Join Date: Jul 2009
Posts: 5
Default What are symptoms of a bad fuel pressure regulator for a 1998 GMC Sonoma?

Engine Size 4.3 Liter
Engine miles 198,000
Intake manifold gasket, Fuel pump, fuel filter,plugs & wires, coil pack, rotor button, & cap have all been replaced.
Engine misses for about 200 feet and then it will run smooth for the rest of the day. Fuel tank has also been checked for trash.
__________________
Powered by Yahoo! Answers
Reply With Quote

  #2  
Old 12-09-2009, 04:34 PM
epiphaknee epiphaknee is offline
Member
 
Join Date: Dec 2009
Posts: 84
Default

A bad fuel pressure regulator can cause unsteady idle, poor MPG, loss of power, surging. You must have the CPI engine.

Just pull the intake plenum and look for washing. The gas will wash out, typically on side or the other. If you replace the FPR consider replacing the nut kit too (the two hoses that bring fuel into the plenum). Replace the plenum gasket, clean out the plenum and it is off to the races.
Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -5. The time now is 10:09 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
gmcowners.com recognizes that "GMC", it's logos and various model names and numbers are registered trademarks of the General Motors Corporation. These terms are used for identification purposes only. gmcowners.com is not affiliated in any way with the General Motors Corporation, GMC or any other company listed herein. All information on this site is the opinion of its members and not the opinion of the site itself. 2014 Madison Ross Media Group. All rights reserved. Content published on GMCOwners.com requires permission for reprint.
MADISON ROSS MEDIA GROUP MARKETPLACE
Need products for your GMC Truck? Check out your options at the links below:

No special deals available at this time...