Question about 1987 Toyota Pickup

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I replaced my throttle sensor on my 1987 Toyota pickup truck and now it runs wide open. I was wondering if there was a certain way that I needed to mark it or what. I can't get it to idle down

I replaced my throttle sensor on my 1987 Toyota pickup truck and now it runs wide open. I was wondering if there was a certain way that I needed to mark it or what. I can't get it to idle down none what else could be wrong

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Hi Vickie. There are a couple of possibilities. The first one is that you bought a faulty sensor. No matter what you may be told, I have seen this more than once.
After that, it is a throttle position sensor, so it has to be installed in the correct position. What it does is tell your computer where your throttle plate is positioned, and feeds fuel to the injectors accordingly. You will need to get the correct specifications from a dealer. They should be happy to tell you.

Posted on Nov 26, 2014

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Posted on Jan 02, 2017

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SOURCE: I need a manual for the 1994 Toyota Pickup

you might try your local library online, in my area they give you access chiltons manuals online at no cost

Posted on Oct 01, 2008

  • 314 Answers

SOURCE: Loping and high idle

You are really onto it! Either the TPS or the cable from the peddle. Do check the cable first. Frankster016

Posted on Oct 26, 2008

  • 1 Answer

SOURCE: 1987 toyota 22r engine

That is usaully the vacuum advance diaphram on the distributor. Its job to advance the distributor when at idle. The diaphrams inside rot and leak air, causing it not to advance. Take off the distributor cap and use a vacuum pump to individualy test each port (two of them) on the vacuum advance diaphram. You should see it pull back, if not replace it. They are sold at your local auto store, oddly its cheaper to get a whole distributor that has one for $100 that to get it alone for $150.

Posted on Dec 28, 2008

  • 1 Answer

SOURCE: Idle surges after warm up and when brake pedal is pressed

1990 22re same problem surge when pedal was depressed thought it was booster or check valve still didnt fix it i even put a brand new booster on it just to make sure still no fix it finnally went away on its own for about a month now it does it just sitting at an idle with out the brake pedal depressed traced all vaccum lines no problem there and still have no clue

Posted on Feb 21, 2009

  • 49 Answers

SOURCE: 1994 toyota pickup idling problems

Could be a throttle position sensor going bad or a loose or leaking vacumm line or loose or worn wiring harness. You had mentioned the engine starts heating up. Do you mean overheating or operating above normal temperature? Sounds like a vacumm issue with the fluctuating idle. Check for worn vacumm lines and check to see if the vacumm is functioning. Sometimes a simple vacumm line with a loose connection or a small hole in it can affect your idle. Old lines are easily replaceable and an inexpensive place to start, then try your egr valve, pcv valve, brake booster vacumm line, oxygen sensor could be worn and affecting the mapping of fuel and air on the computer. Usually the check engine light will come on in this case.

Posted on Apr 18, 2009

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Aug 05, 2010 | 1991 Toyota Pickup

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Vehicle: 1986 toyota "1 ton" pickup truck w/EFI L4 22-R engine. 245k miles After doing an ignition tune-up (plugs, wires, rotor, dist. cap, etc...), my rough idle issue has not subsided. Q: what should I...


I had a 1987 carburator truck and you are correct, dirt was the main issue. However, I think you may have the same issue, but in a different way. I would look at your fuel filer for starters and then run a can of injector cleaner through. If that does not help, maybe look at some new injectors. If you have 245K on this truck, I think your injectors may be tired and need to be replaced. It would appear that you have taken care of all the other issues. Another posibility is the throttle position sensor, (maybe)

Hope this was of some value.

Todd.

Mar 17, 2010 | 1987 Toyota Pickup

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