1994 vette fuel pressure - Corvette Forum

Go Back   >
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C4 Tech/Performance
L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1994 vette fuel pressure

Thread Tools Search this Thread
Old 08-13-2011, 03:27 PM   #1
Junior Member
Thread Starter
Member Since: Sep 2006
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1994 vette fuel pressure

I checked my fuel pressure running on my 94 vette and it is about 36 to 38 pounds. When I hit the throttle it dips a bit and then goes up to about 40 psi. The car stumbles under light acceleration and I'm trying to trouble shoot the problem. What should the pressure be at idle and when I hit the gas running????? I disconnected the vacumm line to the pressure regulator and the pressure goes up to 44 psi. Does this sound like a fuel pump problem? Any help would be great.


Last edited by fueler; 08-13-2011 at 06:50 PM.
fueler is offline   Reply With Quote
Old 08-13-2011, 10:25 PM   #2
CF Senior Member
pcolt94's Avatar
Member Since: Jan 2006
Location: Orlando FL
Posts: 4,765
Thanks: 0
Thanked 20 Times in 19 Posts

Your fuel pressure sounds just fine where I would eliminate the pump and filter. Does not sound like a fuel problem. The injectors on a 94 are pretty good injectors and cause little problems

I donít want to jump the gun on this but it is a possibility the opti might be the problem. That is one of the symptoms of an opti acting up.

Of course there are several other things that can be checked. MAF, MAP and TPS.

Just in principal I would use the on board diagnostics and check for any codes. I would rather be surprised if you found anything on a problem like this but you should check the boxes.
pcolt94 is offline   Reply With Quote
Old 08-13-2011, 10:31 PM   #3
CF Senior Member
Support Corvetteforum!
NCM Sinkhole Donor
l98tpi's Avatar
Member Since: Nov 2008
Location: Monroe OH
Posts: 2,330
Thanked 17 Times in 16 Posts

OMG, I have the same issue right now and just posted in another thread, "1/4 mile video, help with diagnosis". Any way, I don't know if you have a pressure regulator on a 94, but we think that is the issue with mine. I do have a 91 L98 vs your 94 LT1, but I think you have a pressure regulator.
l98tpi is offline   Reply With Quote
Old 08-16-2011, 06:50 AM   #4
CF Senior Member
donkeydawn11's Avatar
Member Since: Sep 2004
Posts: 166
Thanks: 0
Thanked 1 Time in 1 Post

Read my previous post on hesitation problem I went thru some of the same issues Hope it helps you out ended up being bad gas I was on a reserve tank and added sea foam
donkeydawn11 is offline   Reply With Quote
Old 08-17-2011, 04:49 PM   #5
Junior Member
Thread Starter
Member Since: Sep 2006
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts

fueler is offline   Reply With Quote
Go Back   Corvette Forum >
Reload this Page
  • 1994 vette fuel pressure

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    fuel pressure help.. pastamike C4 Tech/Performance 5 03-07-2014 11:27 PM
    My Hard Starting when hot thread - 95 LT1 shofast C4 Tech/Performance 10 12-15-2013 06:01 PM
    Fuel pressure problem vtormane C4 Tech/Performance 9 06-12-2013 05:07 PM
    Fuel pressure woes! 95vettski C5 Forced Induction/Nitrous 62 10-01-2009 11:49 PM
    Problems with Bosch III injector swap on 87 vert. 87 vette 81 big girl C4 Tech/Performance 11 08-27-2009 09:15 AM

    1994, corvette, fuel, pounds, preasure, pressue, pressure, psi, pump, rhe, whats

    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    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
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump

    All times are GMT -4. The time now is 02:37 PM.