Question about 1991 Toyota Camry

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Cold idle problem goe up and down - 1991 Toyota Camry

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Look for a vacum leak.

Posted on May 29, 2010

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2000 dodge stratus. Heater only works at idle, when driving at high speeds, heater blows cold and thermostat gauge goes to cold. Back flushed heater core, new thermostat any ideas?


I'd say you have a faulty thermostat, be it new or not. If your temperature gauge goes to cold as your engine is taking you down the highway, the thermostat is not doing its job. The temperature should never come down to below normal until engine is shut off...

Dec 03, 2013 | 2000 Dodge Stratus

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Idle goes up and down when aircon is on


This is pretty much normal as the AC engages and disengages. Though it should be subtle and not erratic. Is it causing your engine to stall? Does your AC work efficiently or is the air not real cold. It should output around 40 degrees. The compressor may be going out or it needs oil. When the AC turns on the car idle sensor should raise the idle so the AC does not drag the idle down too far. If you turn AC off and try pounding on the brake & turning the wheel violently at the same time (in park of course) if you still have an erratic idle it's not the compressor. It will probably be the IAC or a vacuum leak is suspect.

Jun 29, 2013 | 1995 Mitsubishi Lancer

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89 cutlass cierra crank but wont start when wet out unless gas pedal is pushed


This should be a drive by wire vehicle meaning it has a cable for the throttle body. First thing would be to see if any error codes can be pulled up (most parts stores will do that for free.) Drive by wire versus the late model that use electronic control for the idle have a IAC or idle air control which when first started controls the idle air intake--all air is run by it to idle the vehicle when cold--

Usual symptoms are rather high idle when cold engine or even idle and RPM jumping up and down and stalling when cold.

Another way if idle does drop when cold is tapping the gas--engine will still run until hot. Means not usually a fuel pump issue.

You could also have if the vehicle is fuel injected a dirty Mass air flow sensor, a throttle position sensor, etc.

These can be if the vehicle has them cleaned using a special zero residue spray cleaner.

First have it scanned to see what if any errors it shows--the computer.

Dec 17, 2012 | 1989 Oldsmobile Cutlass Ciera

1 Answer

When I'm driving the idle goes up and down and the


Hi Mike, Have a diagnostic scan carried out. If nothing shows up have the cold start air bypass checked and cleaned. Regards John

Nov 10, 2012 | Cars & Trucks

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2002 ford escape. when i start the truck it goes to a very high idle and will not go down to normal. i can put my foot on the brake and **** into drive and the truck behaves normal. when i shift back to...


What this sounds like is the throttle position sensor, or TPS. When this sensor goes out, you will experience the high idle that will not taper down. The good news is that they are fairly inexpensive and easy to replace.

Jan 21, 2011 | Ford Escape Cars & Trucks

1 Answer

Idle goes up and down whether its cold or hot can anyone help?


check your antifreeze level,if it goes low on a honda you usually get a hunting idle,u might have a leak somewhere,hope this helps

May 27, 2010 | 1994 Honda Accord

1 Answer

Ruff idle on cold start. Idle goes up and down for about five minutes. 99 chevy silverado with the 5.3


bad MAP sensor or throttle body base gasket is leaking also the idle air valve ports can be clogged and the idle air solenoid is weak or bad

Jan 21, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

MX-3 with V6 Manual transmission. Engine idle revving up and down


You should check your engine's AIR hoses that are connecting to the airbox. sometimes a simple airleak will be enough to alter your idle. Specially when its cold the car will already idle rough ( I know im canadian lol). So go check your air hoses ;)

Apr 17, 2009 | 1995 Mazda MX-3

2 Answers

Can't turn the idle down


you have 2 idle settings. one is for cold and one is for after the engine has warmed up. So find the scew that goes to the warm engine idle. turn it down and your set. You might need a Chilton to find what you are looking for.

tepfy

Mar 06, 2009 | 1988 Honda Accord 4 Door

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