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Old 04-09-2008, 11:02 PM   #1 (permalink)
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Arrow 22re engine surges?!?!

i have a 1993 toyota truck w/ the 4cyl 22re engine, and reciently the engine began to "surge" more than usual and it will keep doing that for the rest of the day, especially when i press the brakes or clutch, it almost stalls. its never gotten this bad, i dont know how to fix it, but i think it has something to do with coolant levels for some reason. any idieas?
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Old 04-09-2008, 11:13 PM   #2 (permalink)
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Check your idle. If it is too high, it will cause the surging when the brake is pressed. I had the same problem; my high idle was from a sticking dashpot. If you search previous threads for surging idle you will find more information.
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Old 04-09-2008, 11:50 PM   #3 (permalink)
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i allready tried adjusting idle, but it still dosent help, it makes it worse!
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Old 04-13-2008, 12:29 AM   #4 (permalink)
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What is your idle speed currently set at? It MUST be below 950 RPM's or the computer goes into "fuel deceleration cut" mode, and the idle will fluctuate.

Also, a misadjusted TPS will cause a varying idle.


http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml
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Old 04-13-2008, 09:11 AM   #5 (permalink)
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it was 950 but the tps was causing the engine to surge. he idle screw is set at the lowest idle possible but it still idles now at about 2100rpm.
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Old 04-13-2008, 04:54 PM   #6 (permalink)
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To see if the TPS is working correctly jump the two terminals TE1 and E1 (I think?) and if your idle goes down then it is NOT the TPS.
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Old 04-15-2008, 08:20 PM   #7 (permalink)
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I have a '93 pickup that had the same symtoms as your's. At first the surging only occured when I depressed the brakes. Once it warmed up it quit. At that time it wasn't to annoying. Eventually, the surging became constant and the engine would start to overheat. I checked everything...Brake booster, vacuum leaks, electrical. Finally, I took it to the dealership for diagnostics and it came back as the Idle Air Control Valve. The dealership wanted $500.00 to replace the part. I paid the diagnostics fee and replaced it myself...took about 30 minutes to replace. To buy the part from the dealership would be around $225.00 I ordered it online from Advanced Auto for $109.00 and had it delivered to the local store...no shipping fees. The valve is mounted on the bottom of the Throttle Body with 4 phillips head screws. I had to remove the TB to remove the IAC valve. Very easy fix. Hope this helps.

Last edited by '93TOYPU; 04-15-2008 at 08:21 PM.
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