High Idle
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5th Wheeling
Joined: Dec 2025
Posts: 32
Likes: 2
Hey sorry for the delay in replies, been a hectic year so far lol. I recently pulled the computer and popped it open to find some corrosion in it. Looks like some water managed to get in or something else happened. It’s probably safe to say it is cooked. I cleaned as best I could to keep it running and driving and it did help it out a little. Either going to try to hunt up a junkyard unit or buy a remanned one
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5th Wheeling
Joined: Dec 2025
Posts: 32
Likes: 2
I have one lined up for now, a buddy found it for me. I will definitely give a rebuild a try though, wouldn’t hurt to have it as a backup and if I screw it up I’m not out completely.
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5th Wheeling
Joined: Dec 2025
Posts: 32
Likes: 2
I am in central, a buddy found one for me and I will get it sometime next week. Thankfully the truck still kind of works so if I get in a pinch I can still use it.
Fleet Mechanic
Joined: Oct 2025
Posts: 1,718
Likes: 377
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5th Wheeling
Joined: Dec 2025
Posts: 32
Likes: 2
I am honestly starting to hate this truck, not even a day after and it started acting up again on my way home from town……….. same friggin symptoms, no codes, high idle /12-1500 rpm) when putting it in park, stuttering when taking off from a stop, throttles up when coming to a stop……
Last edited by AvtomatKentucky101; Apr 25, 2026 at 11:07 PM.
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5th Wheeling
Joined: Dec 2025
Posts: 32
Likes: 2
that’s the first thing I did, it was all good.
Fleet Mechanic
Joined: Oct 2025
Posts: 1,718
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Two options here. Next time it does it, immediately unplug the IAC. Does it recover? Second, maybe first for me, cut a 2” section of soda can and place it between EGR and intake blocking the port. Drive and see if that cures anything.
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5th Wheeling
Joined: Dec 2025
Posts: 32
Likes: 2
When unplugging the IAC, it idles way down which from what I understand is normal function of it. I will give the egr block a try though
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5th Wheeling
Joined: Dec 2025
Posts: 32
Likes: 2
Judging by its condition yes someone had messed with it before. To make it worse my dad started screwing with it yesterday after I told him NOT to screw with it. Not the first time he hasn't listened to me when it comes to vehicle 🤬. Last time he didn't listen he about lost a wheel going down the road after I told him that the CV axles on his 98 Chevy help hold the bearings together……
Fleet Mechanic
Joined: Oct 2025
Posts: 1,718
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That is normal. That tells you that the IAC isn’t sticking, but instead being commanded. Solve the commanding issue (computer, intake air temp, o2, map, coolant temp) are talking the computer more is needed. A slight condition can also tell the computer you need more air.