LastDeadLast
Member
Hey everyone,
So I've been trying to trace down a few issues since I've had my car on the road (about 3 months). The first issue was a pretty major intake manifold leak which fixed an idling issue.. when I had the intake off, I had a suspicion that the head gasket was leaking... and when I had head off I noticed that the #7 cylinder looked brand new with no carbon deposits. Thinking that the problem was either the head or intake gasket I button it up.
So even though the idle issues were cured, something still wasn't right; it just didn't seem to have the power that it should. So following a hunch, I ordered a cheap USB bore scope and sure enough, the #7 cylinder was still clean!
So I tested for spark; I had spark. I tested the fuel injector; The injector tested OK. I changed the spark plugs; No change. I tested the spark plug wire; The wire was fine. I finally got a noid light and tested the EFI harness; FAIL!! The wiring to the ECU turned out to be OK, so the problem had to be the ECU. I ordered an ECU from Autozone for $80 (with core).. and bam!! The car now runs like a raped ape. The idle is the best its ever been and the driveability is much better...
This has been pretty frustrating to diagnose, I'm glad its finally fixed. I just found 50+ extra horsepower!!! I feel like I've been keeping gasket companies business lately.
Thanks for letting me rant,
-Shannon
So I've been trying to trace down a few issues since I've had my car on the road (about 3 months). The first issue was a pretty major intake manifold leak which fixed an idling issue.. when I had the intake off, I had a suspicion that the head gasket was leaking... and when I had head off I noticed that the #7 cylinder looked brand new with no carbon deposits. Thinking that the problem was either the head or intake gasket I button it up.
So even though the idle issues were cured, something still wasn't right; it just didn't seem to have the power that it should. So following a hunch, I ordered a cheap USB bore scope and sure enough, the #7 cylinder was still clean!
So I tested for spark; I had spark. I tested the fuel injector; The injector tested OK. I changed the spark plugs; No change. I tested the spark plug wire; The wire was fine. I finally got a noid light and tested the EFI harness; FAIL!! The wiring to the ECU turned out to be OK, so the problem had to be the ECU. I ordered an ECU from Autozone for $80 (with core).. and bam!! The car now runs like a raped ape. The idle is the best its ever been and the driveability is much better...
This has been pretty frustrating to diagnose, I'm glad its finally fixed. I just found 50+ extra horsepower!!! I feel like I've been keeping gasket companies business lately.
Thanks for letting me rant,
-Shannon
