GVR-4
Well-known member
I'm ready to sell this pile of crap. I've been working on trying to get the idle speed under control for weeks and have made no progress. Please only offer useful suggestions.
Background:
Idle surge gradually got worse about 3 months ago, so I decided to get rid of the FIAV. I removed the throttle body, FIAV freeze plug and screwed in the plunger (or whatever it's called) so it would seal off completely (per Jeff O.) and replaced the freeze plug sealing it with some Ultra Grey. The idle surge was much better, but idle was ~1500.
I replaced the BISSS o-ring, ISC stepper motor, set the throttle closed switch and TPS. I followed the guidelines for setting base idle by grounding pin 10 of the diagnostic port to put the ISC stepper motor in the middle of its range and grounded the lead for setting base timing. I can get the idle speed to stabilize at 800 under these conditions, but when I remove the ground from pin 10, the idle rises 200-300 rpm. When I remove the ground for setting base timing, the idle rises ~400 rpm and I am back at 1200-1500 rpm.
My next idea is checking for intake leaks again. Has anyone else dealt with this issues like this?
More background:
I have had ECMLink since about January and have not taken the time to learn how to use it as well as I want, so maybe I don't have something on it set correctly.
The biggest frustration is this is my daily driver, I am working mandatory 10-hour days and I have a family. Wrenching is no fun with time constraints! Please help.
Background:
Idle surge gradually got worse about 3 months ago, so I decided to get rid of the FIAV. I removed the throttle body, FIAV freeze plug and screwed in the plunger (or whatever it's called) so it would seal off completely (per Jeff O.) and replaced the freeze plug sealing it with some Ultra Grey. The idle surge was much better, but idle was ~1500.
I replaced the BISSS o-ring, ISC stepper motor, set the throttle closed switch and TPS. I followed the guidelines for setting base idle by grounding pin 10 of the diagnostic port to put the ISC stepper motor in the middle of its range and grounded the lead for setting base timing. I can get the idle speed to stabilize at 800 under these conditions, but when I remove the ground from pin 10, the idle rises 200-300 rpm. When I remove the ground for setting base timing, the idle rises ~400 rpm and I am back at 1200-1500 rpm.
My next idea is checking for intake leaks again. Has anyone else dealt with this issues like this?
More background:
I have had ECMLink since about January and have not taken the time to learn how to use it as well as I want, so maybe I don't have something on it set correctly.
The biggest frustration is this is my daily driver, I am working mandatory 10-hour days and I have a family. Wrenching is no fun with time constraints! Please help.