Thundersteel
Registered User
Here's the scoop:
Installed Kooks shorty headers. At the same time, I installed new Motorcraft plugs, new Magnacor plug wires, new Gatorback belts, and new steel tensioner pulleys (bought everything from SCP).
Since then, the car runs great--except when idling after warming up. It idles fine for awhile, then the car almost stalls; than the idle returns to normal; then it almost stalls again--the same cycle over and over. Normal idling RPM is about 800; when it almost stalls, it decreases to about 400 RPM.
When I replaced the IC tubes, I used Tbird88's gaskets, but I left the original sealing tape on. Thinking I may have a leak, I checked for them using carb cleaner spray--no difference.
When removing the factory manifolds, I had to cut the EGR tube, as the fitting wouldn't loosen. I repaired the EGR tube using JB Weld. Thinking it may be an EGR problem, I disconnected the vacuum line from the EGR valve--no difference.
With the headers on, the oxygen sensor leads were too short, so I spliced them to make them longer.
I decided to run codes (key on engine off)--got a code 543 (fuel pump secondary circuit failure).
As I said before; the car runs great, except for the idle problem.
It is a 95 5-speed with 50k miles. Can anyone help me? Thanx!
Installed Kooks shorty headers. At the same time, I installed new Motorcraft plugs, new Magnacor plug wires, new Gatorback belts, and new steel tensioner pulleys (bought everything from SCP).
Since then, the car runs great--except when idling after warming up. It idles fine for awhile, then the car almost stalls; than the idle returns to normal; then it almost stalls again--the same cycle over and over. Normal idling RPM is about 800; when it almost stalls, it decreases to about 400 RPM.
When I replaced the IC tubes, I used Tbird88's gaskets, but I left the original sealing tape on. Thinking I may have a leak, I checked for them using carb cleaner spray--no difference.
When removing the factory manifolds, I had to cut the EGR tube, as the fitting wouldn't loosen. I repaired the EGR tube using JB Weld. Thinking it may be an EGR problem, I disconnected the vacuum line from the EGR valve--no difference.
With the headers on, the oxygen sensor leads were too short, so I spliced them to make them longer.
I decided to run codes (key on engine off)--got a code 543 (fuel pump secondary circuit failure).
As I said before; the car runs great, except for the idle problem.
It is a 95 5-speed with 50k miles. Can anyone help me? Thanx!