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- #21
Yep. Throttle body was cleaned out thoroughly.
Low Idle Before Big Trip, Need Advice
- Thread starter Alaska ADV
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Yep. Throttle body was cleaned out thoroughly.
On my old 93 Trooper I went through the engine bay opening every connector and cleaning with solvent. I replaced every sensor on the engine. Luckily the parts were cheap. This process made a huge difference in stability and driveability.
The one sensor that gave me the most grief was the throttle position sensor in the throttle body. Had to spend a little more on another replacement to get it right. Idle drop-off vanished.
I also replaced all of my vacuum tubing with nice yellow silicon tubing. Looked great, worked great, ......sold the Trooper.
The one sensor that gave me the most grief was the throttle position sensor in the throttle body. Had to spend a little more on another replacement to get it right. Idle drop-off vanished.
I also replaced all of my vacuum tubing with nice yellow silicon tubing. Looked great, worked great, ......sold the Trooper.
Cleaned TB about 167 times. 
I've been troubleshooting mine off and on since October 2015.
Truck runs great so it's become a non-issue in my case, however.
Truck runs great so it's become a non-issue in my case, however.
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- #26
I got caught up with some other maintenance. Ive pulled the throttle body again, and cleaned it... again. Unfortunately I didnt have feeler gauges, so I put it back on and went to get some, only to realize you can only really get a feeler gauge in there to test the TPS if the throttle body is off. So now, I have to take it off again. Good thing my intake tube is new, or itd be disintegrated by now.
No one has really expressed any concern on this being an issue big enough to cancel my trip, so I am leaning towards just running with it if I cant solve it in time.
No one has really expressed any concern on this being an issue big enough to cancel my trip, so I am leaning towards just running with it if I cant solve it in time.
FWIW, after I did some re-wiring this weekend, I had the low idle symptoms. It behaved very differently from before I messed with the ground cables. Startup idle wasn't nearly as high as it should have been. I figured the ECU needed to relearn so I thought nothing of it. Rough, low idle when in any gear or park or neutral but fine while driving. Saturday I spent several hours redoing the grounds and the fusible link and after it was all buttoned up, same behavior.
Someone in another thread mentioned that you'll need to go through 10 start cycles before the idle normalizes. Just so happens that 3 cycles worked for me.
If anyone experiences similar behavior after disconnecting the battery, or main grounds, double check your connections and wait to see what happens after several startups.
Someone in another thread mentioned that you'll need to go through 10 start cycles before the idle normalizes. Just so happens that 3 cycles worked for me.
If anyone experiences similar behavior after disconnecting the battery, or main grounds, double check your connections and wait to see what happens after several startups.