: 2000 Deville Fuel Pressure Specs



postman2000
07-10-14, 05:01 PM
Hello all, I was wondering if you guys knew the fuel pressure is supposed to be for my 2000 deville..I am experiencing what feels like the car is choking when I stomp on the gas..Checked Fuel pressure and KOEO is 30psi, engine running is 32psi..unplugged vac line to regulator and pressure went up to 48psi..Rev up engine and psi actually gets a few psi higher for a second and then drops to like 30psi..Are these symptoms of a bad pump? Thanks for any and all help...

MoistCabbage
07-10-14, 05:18 PM
Spec is 39-45. Sounds like it's pump time.

postman2000
07-10-14, 05:32 PM
:( Yeah I guess I have to bite the bullet and get one

MoistCabbage
07-10-14, 05:55 PM
Check www.rockauto.com for part #s and prices. Get a pump/level sending unit assembly, not a pump only. The job really isn't too bad, as there's an access panel in the trunk. No need to drain or drop the tank.

Submariner409
07-10-14, 06:44 PM
FPR problems ? Fuel pressure spec, GM service manual, is 41 - 47 psi. Cadillac Tech Tips.

postman2000
07-10-14, 08:38 PM
Thank you guys..I will check out a new pump..since it never goes past around 34 while running with FPR connected it is probably the culprit..

Ranger
07-10-14, 09:06 PM
Don't forget the good news. You can access it through the hatch in the trunk. No need for a tank drop.

postman2000
07-13-14, 11:37 PM
Well I replaced the pump and sending unit and the fuel pressure remains the same around 34psi.. Now I noticed I have a leaky o ring where the new pump sits..The new pump came with its own oring but I couldnt get it to fit right and I reused the old one..guess that was a mistake

Submariner409
07-14-14, 07:37 AM
Post #5. FPR ??? or how about the fuel filter itself - under the rear driver's side passenger's butt.