Guybrush
Probationary Member
- 3
- 0
- Oct 15, 2009
-
Reykjavík,
Europe
Im having a little trouble with my 4g63.
The matter is that i have a 1G 4g63 in a BMW e30 and im having trouble with the idle of course.
I have read loads and loads of info about the idle surge problem.
I think i have rooted out the problem to the all famous ISC motor.
So what I am wandering, if someone knows exactly wich sensors and what signals that go to the ecu, triggers the ISC to act.
I know for certain that the ISC motor works, I have 3 of them and all function the same way. The throttle body looks like new, it hasnt been in a running car since 1999 and all sealings are tip top and its clean as a dining plate.
I have removed all the vacuum lines, all 3 solenoids and plugged it accoring to a diagram from the tech articles.
And one other thing maybe, I havent yet connected the alternator, could the ECU be sending signals to open up the ICS to compensate for additional load from the alternator since it detects no charging?
I would really appriciate some help with what pins should be grounded or simulated as sensors on the ECU.
Sorry if you guys are tired of thes question, but after a few days of searching i still havent found what im looking for
The matter is that i have a 1G 4g63 in a BMW e30 and im having trouble with the idle of course.
I have read loads and loads of info about the idle surge problem.
I think i have rooted out the problem to the all famous ISC motor.
So what I am wandering, if someone knows exactly wich sensors and what signals that go to the ecu, triggers the ISC to act.
I know for certain that the ISC motor works, I have 3 of them and all function the same way. The throttle body looks like new, it hasnt been in a running car since 1999 and all sealings are tip top and its clean as a dining plate.
I have removed all the vacuum lines, all 3 solenoids and plugged it accoring to a diagram from the tech articles.
And one other thing maybe, I havent yet connected the alternator, could the ECU be sending signals to open up the ICS to compensate for additional load from the alternator since it detects no charging?
I would really appriciate some help with what pins should be grounded or simulated as sensors on the ECU.
Sorry if you guys are tired of thes question, but after a few days of searching i still havent found what im looking for
