I have the K engine Thanks for the PSI info. My psi is 43 at idle to 49 at about 2000 rpm, must be my hesitation problem, although when i unhook my MAP sensor car seems to run fine. Heard that low fuel pressure will bring up a MAP sensor code. does that sound logical?
Apr 11, 2009 at 6:38 PM
RASMATAZ
CAR REPAIR CONTRIBUTOR
75,992 POSTS
Yes it does because you are forcing the computer to open the injectors more which will compensate for the weak fuel pump here is guide to help you see what you are in for when doing the job. Your car has a trap door so it is much easier.
I need to know what is the fuel pressure and vacuum pressure I need to look at it
Jul 22, 2018 at 1:57 PM
(Merged)
ASEMASTER6371
CAR REPAIR CONTRIBUTOR
52,796 POSTS
fuel pressure should be around 40-45 lbs.
idle vacuum should be 18-20 inches
Roy
Jul 22, 2018 at 1:57 PM
(Merged)
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.