///Manuel
Active Member
- Joined
- December 12, 2002
- Messages
- 96
- Reaction score
- 0
- City, State
- Denver, CO
- Year, Model & Trim Level
- 92 XLT
FIX! Hose clamps on PCV hose!
I checked my TPS at .97V when closed. Replaced the IAC. I also cleaned the MAF sensor.
The engine revs to 2.2k rpm when starting and drops slowly after a few seconds (3-4) whether cold or hot.
Then, when rolling if I shift to neutral (manual tranny) the idle goes to 1,500 and stays there until I stop. Very annoying when running the engine between 1k and 2k since the idle wants to throttle pretty much.
EDIT: Disconnecting the IAC prevents the car from starting when cold, the car barely starts when hot. When disconnected the engine idles fine and revs fine as well although sometimes on the verge of boging.
As soon as I plug the IAC back in, the idle jumps up some and slowly drops to normal. I couldn't find an important vacuum leak or any leak for that matter, however the throttle body has a hole in it of about 3/16" diameter so I believe it could get enough air through that to keep the car running when idling with IAC disconnected.
EDIT2: I disconnected the air intake going into the throttle body as well as the IAC and then plugged the throttle body plate hole with my finger. The car nearly stalled but sucked enough air to keep cranking slowly. I believe there are slight leaks near the PCV valve as well as the brake booster so I will be replacing parts in there and see if that fixes my issue.
FIX! Hose clamps on PCV hose!
I checked my TPS at .97V when closed. Replaced the IAC. I also cleaned the MAF sensor.
The engine revs to 2.2k rpm when starting and drops slowly after a few seconds (3-4) whether cold or hot.
Then, when rolling if I shift to neutral (manual tranny) the idle goes to 1,500 and stays there until I stop. Very annoying when running the engine between 1k and 2k since the idle wants to throttle pretty much.
EDIT: Disconnecting the IAC prevents the car from starting when cold, the car barely starts when hot. When disconnected the engine idles fine and revs fine as well although sometimes on the verge of boging.
As soon as I plug the IAC back in, the idle jumps up some and slowly drops to normal. I couldn't find an important vacuum leak or any leak for that matter, however the throttle body has a hole in it of about 3/16" diameter so I believe it could get enough air through that to keep the car running when idling with IAC disconnected.
EDIT2: I disconnected the air intake going into the throttle body as well as the IAC and then plugged the throttle body plate hole with my finger. The car nearly stalled but sucked enough air to keep cranking slowly. I believe there are slight leaks near the PCV valve as well as the brake booster so I will be replacing parts in there and see if that fixes my issue.
FIX! Hose clamps on PCV hose!