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Junior Member
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Join Date: Oct 2013
Location: Idaho
Posts: 14
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Junior Member
Join Date: Oct 2013
Location: Idaho
Posts: 14
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88 Fixit: Idle problems with warm engine
My first of many troubleshoots.
1988 V6 SR5 4Runner
220k
After about 3-6 months of driving this thing in dusty conditions, I started having problems with the air intake. After about 20-30 minutes of driving, when I come to a stop and just idle, the RPMs bounce pretty erratically down to 0 then up to about 500. Many times it will just die. When the RPMs are up (i.e. when I am driving), no problems.
Went into NAPA a few weeks ago on my Friday off, and two older guys there seemed to know what it was immediately. Led me over to the shelf, put the MAF sensor cleaner in my hands, told me what to do, and sent me on my way. The next two weeks I spent overseas, then returned, saw the cleaner, and thought "Aw sh*t, I forgot what they said".
I also seem to get a check engine light after an hour or so, with no idea what's going on there. And, to add to the fun, the engine temp sensor (I've replaced the coolant sensor to no avail) doesn't seem to be functioning properly.
I've got the MAF off right now and it looks clean. A small layer of dust on the innards, but nothing that indicates blockage. I seem to remember a valve of some sort being mentioned at NAPA, but like I said... All hazy right now.
What should I be cleaning? Anyone had experience with this? What's the deal?
Thanks in advance! I tried searching for this problem and didn't see anything, I apologize if this issue has been addressed. Mods, point me to a thread if it exists and delete this one; make sure to berate me publicly first!
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