Question about 1992 Toyota Tercel

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Idle time Hi, I have toyota tercel 92 , which ran only 67000 miles here's the problems I get 1. its not resting in proper idle time 2. when its in parking gear or Neutal it gets accelerated. 3. its just surge up , I tried adjusting it but it won't happen, even it stays good for some time .. but when I switch it off and the engine cools down , again the idle time is high ..

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  • sushil_jakib Feb 01, 2009

    Well, I checked the leaks there's not .. but I found that the hoses down the the point , where when we pressed the the accelerator, engine revs up , one is hot and another is not but after half an hour of keeping the engine on, idle time is okay

  • yadayada
    yadayada May 11, 2010

    Never adjust the idle, it is 100% computer controlled, now u will need to take it to the dealer to have the idle hard stop set to originqal factory spec. U need to check for vacuum leaks on the engine, this is the ususl culprit in high idle speed issues.

  • Mike Butler
    Mike Butler May 11, 2010

    Carburetor I'm guessing, not fuel injected?

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  • 92 Answers

Look at at your idle control valve. Also could be the idle up vsv. If your not sure where these are let me know and I can help you with that.

Posted on Sep 19, 2009

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How totroubleshoot for high idle problem on 1992 toyota tercel


Hi Shabba, Let us have more details about your problem? What engine is fitted into your vehicle? Is the engine idle speed high at all times or only when starting when cold. Is the engine diesel or petrol? There is an identification plate fitted on the fire wall under the bonnet (hood) Copy the details from that plate and maybe we can advise. Regards John

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Here are the most common causes of surges, stalls at stops, low erratic idle speed, rough idle and engine hesitation, it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

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Hi there!

ignition timing problem or IDLE KNOB OR SCREW set too low.

you'll need to tune it. and set the idle a little bit higer.

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1 Answer

Idle


Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Feb 20, 2009 | 1992 Toyota Tercel

2 Answers

1988 Toyota tercel HTBG 1500cc wont idle


Suggest that you read the entries posted under cars/t594234-toyota_lacks_power at this fixya website. 87-90 Toyota Tercels have significant carburetor problems.

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1 Answer

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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

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1 Answer

Broken camry


Had a similar problem on a 1992 tercel. Hard to find but when checking sparkplugs accidentally found that one of the spark plug cables was internally damaged. Thus the full electrical energy was not being delivered to the spark plug. Upon replacing the distributor cap with all the sparkplug cables, the engine picked up idle speed and run smooth again.

Jul 29, 2008 | 1991 Toyota Tercel

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