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How do I adjust my 1991 Paseo idle speed

My 1991 Toyota Paseo idle speed is between 1300 to 1500 rpms with the air-cond and other electrical accessories turned off. How do I adjust it to 750 to 800 rpms as recommended by Toyota?

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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: 1995 toyota pickup, surging at around 2000 rpms

Is the check engine light on?

A major cause of surging is either air leaks between the air flow meter and the engine intake manifold, or a bad or mis-adjusted throttle position sensor.

Posted on Feb 25, 2009

  • 51 Answers

SOURCE: rough idle on 1990 saab 900 convertible, 16V

Because the car has adaptive technology, it may take a while to reset and adjust to the new, cleaner and better conditions than those to which it had previously adapted.

Did you change the cap and rotor? if the plugs needed replacement, likely they do too

Possible other causes include:

loose or corroded connections to any electrical component you disturbed (make a checklist and tick them all off as you check them);

mis-reinstallation of any F.I. part disturbed(checklist again)

obstructed water flow through the AIC valve;

improper voltage output from the AIC valve (for LH 2.4 systems, should output 8 volt at idle, dropping as load increases; for LH 2.4.2 system output 7 volt at idle etc; testing between terminals)33 and 17 at disconnected LH connector;

possible problem with MAF.

Hope this helps


Posted on May 30, 2009

  • 195 Answers

SOURCE: Weird Toyota Paseo idle problem

So far everything you tell me is normal, the A/C being triggered requires the engine to turn a compressor to get the system working, and on a small 4 cylinder engine, to get enough power to turn it and not stall requires revving the engine a bit more to get more horsepower. But i must admit that the normal idle RPMis a bit low. The best quick fix i got for you is to rotate the TPS sensore a bit. If you wander what TPS means, it means Throttle Position Sensor. You can usually find it easily, since it is attached to the throttle butterfly. So if you're not sure where all that is, start by locating the wire that comes out of the gas pedal, it will lead you straight to the throttle butterfly, and the TPS sensor. Oh, and it usually looks like a small black plastic box by the way. Once you found the little TPS sensor, you need to loosen the screws/bolts holding it in place (usually there are only 2 screws holding it) but don't take them off completely though, just loosen them. Now you should be able to turn the TPS sensor a few degrees either way. Start the car and idle it in park. Now go under the hood and turn the TPS sensor one way to see what it does, one way will get the engine idle lower, and the other way will make it idle higher. Just turn it until you get around 1000 RPM on park and tighten the screws again and you should be fine for a while. Hope this helps.:)

Posted on Jul 08, 2009

  • 324 Answers

SOURCE: disable airbag light on a toyota paseo?

you could remove the instrument cluster from the dash and unplug / remove the light, or go the easy way and use a piece of electrical tape and cover it. as far as disabling it I would think the only way would be to reprogram your ECM

Posted on Apr 22, 2010

SOURCE: My 1991 toyota celica GT

You will need to replace the faulty idle air control valve (IAC) This is a very common and well known problem on Toyota vehicles. Click on the link below to view the replecement part needed:

Posted on Jan 12, 2011

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Feb 24, 2009 | 1995 Toyota Pickup

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