Question about 1986 Toyota Tercel

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1986 toyota tercel won't idle after the engine warms up.

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Vacuum leaks in these old cars are frequent you need the vacuum lines replaced they become porous and are extensive, also the timing must be tweaked to 10 degrees instead of the recomended 5 degrees as long as the car does not ping going up hills this is a essential modification to OEM recommendations I own a 1985 4wd station wagon replace the O2 sensor 35 bucks rockauto.com

Posted on Jun 24, 2009

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Posted on Jan 02, 2017

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1986 Tercel 4wd. Car will keep running for a bit after I turn it off


If it chugs or sounds like a diesel, the idle speed could be too high, or you could have an excessive amount of carbon build up in the engine.

Sep 22, 2012 | 1986 Toyota Tercel

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Is there a timing belt or gear on a 1986 toyota tercel


Timing belt for sure.If there is a plastic cover on the front of the engine behind the drive belts then its a timing belt and not a chain.
hope this helps,
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WHAT TIMING MARKS DO I USE FOR 1986 TERCEL 3AC TIMING BELT REPLACEMENT


CLICK on the following LINK. It has the Timng Mark(s) Diagrams you will need.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!

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1 Answer

I HAVE A TOYOTA TERCEL THAT SURGES AT AN IDLE, I


Try replacing that sensor or continue looking for a vacume leak

Sep 09, 2009 | 1994 Toyota Tercel

1 Answer

Idle is rough and rich after warming up 1986 toyota 4wdwagon 3 ac


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Jul 07, 2009 | 1987 Toyota Tercel Liftback

2 Answers

1985 toyota tercel runs rich after warming up and idles rough.


sounds like the cold start injector

try unplugging it

here is a general picture of the location .HERE

May 14, 2009 | 1987 Toyota Tercel Liftback

1 Answer

1994 Toyota Tercel idle


Mine did the same thing. Try adjusting the idle. But if you adjust it too much it may run rich

Feb 21, 2009 | 1994 Toyota Tercel

1 Answer

1984 Toyota tercel wagon


Although this isn"t a proper fix, and may affect emissions, I ran accross this problem on a friend's 87 2wd wagon.

There is a dashpot that controls a lever the Idle set screw is on, I am guessing it is a decel valve that closes butterfly when coasting in gear. I never looked at a manual to figure out what controls the vacuum valve that is on the passenger side of the engine compartment, but if you disconect the vacuum line and plug it that lever will not back off and idle will remain where you set it with the adjustment screw.

Make sure the engine is warmed up and not on a fast idle cam before adjusting idle.

The car is a 5 speed, I not sure if automatic cars are the same.

The car idles fine now and still run's great and gets 37+ MPG with 240000 miles!

If you want to fix it properly you would have to diagnose why that dashpot is being actuated at idle

Sep 01, 2008 | 1984 Toyota Tercel

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