DisturbedMXer8
Active Member
- Joined
- Dec 7, 2009
- Messages
- 279
- Reaction score
- 29
- Points
- 28
- Location
- Anaheim, California
- Vehicle Year
- 1988
- Make / Model
- Ford Ranger XLT
- Engine Type
- 2.9 V6
- Transmission
- Automatic
- 2WD / 4WD
- 2WD
Okay guys, so my 88 2.9 decided to start idling high about a week or two ago (right around the same time that mornings started to hit the low 30's when I leave for work). As soon as it's fully warmed up, she normally idles perfect, dead at 800 RPM. Now, as soon as it's warmed up, she's idling at 900-950 in drive, 1k in park. What's weird is, if I snap the throttle, it comes back down to 800, then adjusts itself back up to the 900-950, as if it has no idea that it's idling too high. What's even weirder is that if I go on a longer than normal drive (say 10 miles/30 minutes instead of 5 miles/15 minutes) it will eventually correct itself and the idle will fall back down to 800... WTF.
So today, while trying to look for vacuum leaks, I spent a full bottle of carb/throttle body cleaner on it and didn't find anything. However, I did notice that when I stepped on the brakes, it will idle up a bit (50 to 100 rpm), and come back down when I let off. So, I then decided to pump the brakes for 10 seconds or so, and the idle came all the way up to 1100 or so, then back down to about 850 (had been idling in the driveway for close to half an hour at this point, after a short drive around town to warm up)... is this normal? I can hear a slight hissing sound when I have my pedal depressed that slowly goes away, could this be the source of my high idle? Or is it normal for idle to fluctuate when the brake pedal is depressed?
Any help is much appreciated. I am trying to install my center console soon, but I really can't justify spending the time on it when I know there is something else wrong. Thanks guys, 'preciate it ahead of time
So today, while trying to look for vacuum leaks, I spent a full bottle of carb/throttle body cleaner on it and didn't find anything. However, I did notice that when I stepped on the brakes, it will idle up a bit (50 to 100 rpm), and come back down when I let off. So, I then decided to pump the brakes for 10 seconds or so, and the idle came all the way up to 1100 or so, then back down to about 850 (had been idling in the driveway for close to half an hour at this point, after a short drive around town to warm up)... is this normal? I can hear a slight hissing sound when I have my pedal depressed that slowly goes away, could this be the source of my high idle? Or is it normal for idle to fluctuate when the brake pedal is depressed?
Any help is much appreciated. I am trying to install my center console soon, but I really can't justify spending the time on it when I know there is something else wrong. Thanks guys, 'preciate it ahead of time