Nathan123
New Member
- Joined
- Sep 6, 2009
- Messages
- 254
- Reaction score
- 2
- Points
- 0
- Location
- Millersburg Pennsylvania
- Vehicle Year
- 1989
- Make / Model
- Ford
- Engine Size
- 2.9 Litre
- Transmission
- Automatic
I have a 89 bronco II. When your driving, and step on the brake and stop, like at a stop sign, sometimes the rpm surges say down to 500 and then up to 1500. Sometimes it stalls out but if you give it gas quick enough it will recover. Normal Driving is not affected. I cleaned the IAC valve and it did not help. I asked my mechanic and he recommended a ford fix part...its a plate with 3 adjustment screws that goes between the IAC and intake. Turns out mine already has this. Adjustment of the screws helped for some time but about once a month this surging would start back up. So I finally replaced the IAC valve with a new one from autozone, and the problem continues. I havnt pulled codes yet, but previosly the only code thrown out was "cannot control idle during low RPM self check" I think its number 13. Any ideas?