If you give it gas quickly the engine stumbles and never recovers even in park. Give it gas slowly and it’s fine, with a lot of pressure on the break pedal and in drive it will creep the car forward.
No error codes.
These are the things that have been replaced in order with no change…
Throttle Position Sensor Ignition Module Coil Fuel Pressure Regulator Manifold Absolute Pressure sensor Cap and Rotor Fuel Filter (checked fuel pressure and was pegged to 10, my gauge only goes to 10) Computer
What in the hell is left???
Need to get this pace car back on the road.
Aug 13th, 2003
Posts: 3172 From: Wichita, KS, USA Registered: Jun 2000
I may sound like a stuck record, but even if my radio will not play I check the EGR valve. Yours (if OEM) is a negative back pressure valve. It can seem to function OK and still really screw things up. A small valve on the upper end of the stem regulates vacuum to the main diaphragm. It gets fouled with carbon and valve malfunctions. Unplug vacuum line from EGR, plug line and see what happens.
Posts: 13353 From: kansas city, mo Registered: Jul 2002
just for record and something to check, i suppose, in the future, i'll offer the problem i had with mine when it acted this way... get this and doesnt' it sound stupid. it's a duke and the distributor cap that i put on was el cheapo from autozone. gp sorensen i think. it had jumped off the top on one side, causing the rotor button to chew everything up in there. my car ran fine till i tried to go above something like 3000 rpms. that's just my little misfire experience.
Posts: 540 From: Aylmer, Ont. Canada Registered: May 2002