1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, P 0506 again - low idle speed in Past Cadillac Vehicle Discussion; 2003 Deville w/ 125K miles. Every couple of months it will not idle stalls out . Can't be TB cleaning ...
- 03-30-13 05:00 PM #1
P 0506 again - low idle speed
2003 Deville w/ 125K miles. Every couple of months it will not idle stalls out . Can't be TB cleaning or it would be a full time problem , same with vacuum leak , the problem would be constant not intermittent .
- 03-30-13 05:14 PM #2
Re: P0506 again!!!!!
P 0506 - http://myweb.accessus.net/~090/dtcobd2.html
Thanks for the definition (I changed your thread title to better reflect the problem)
"Idle speed low" can be several things, not simply the IAC. Vacuum leak problems normally cause fast idle, IAC passage problems cause low idle. TPS (Throttle Position Sensor) can cause idle faults. Excess engine loads (aftermarket batteries and alternators) can cause low idle problems. Air filter new within 12,000 miles ?
- 04-05-13 08:03 PM #3
Problem was pretty bad then we had very unusually warm weather and the problem went away . What gives ?
- 04-05-13 09:37 PM #4
Re: P 0506 again - low idle speed
Eliminate the free stuff first and clean the TB.
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