Northstar Engines and System Technical Discussion Discussion, 95 Eldorado 4.6L Engine stalls in Cadillac Engine Discussion; 95 Eldorado. Engine always stalls at idle and no pedal force. Replaced fuel regulator last month. Code is P027C - ...
- 07-16-09 06:32 PM #1Cadillac Owners Member
- Automobile(s): 95 Eldorado, 2002 Escalade
- Join Date
- Aug 2008
95 Eldorado 4.6L Engine stalls
95 Eldorado. Engine always stalls at idle and no pedal force. Replaced fuel regulator last month. Code is P027C - open throttle signal switch. How can I check the circuit? Is this a five volt circuit? Alternative may be Idle control valve/motor, but no other codes displayed for PCM. Also, throttle valve sticks to throat after sitting off for a minute or more. PCM data shows -.9 degrees throttle position.
- 07-16-09 07:24 PM #2
Re: 95 Eldorado 4.6L Engine stalls
I think your problem is the open throttle switch on the ISC motor. Take it apart and clean the contacts before replacing it. I seem to recall others having luck with it before.