Question about 1994 Ford F150 Styleside Supercab

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Need to know whats the rpms are supposed to be at while idling

Need to know whats the rpms are supposed to be set at at while idling

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  • yadayada
    yadayada May 11, 2010

    Idle speed is computer controlled, if it is not idling at the correct speed u have to fix the problem that is causing that, what does it do?


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I have the same truck theres an idling screw on the leaver you cable hooks to set idle to 900 or 1000 rpm

Posted on Feb 23, 2009

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How will I adjust the rev of carburetor when aircon is on?

you don't adjust the idle for any accessories
The idle is set for smooth running of the engine( normally 750-900 rpms with a drop of 200-300 rpms with an ac running so set the idle at the upper rpms and it will still be smooth when the ac is on without affecting gear engagement
your problem I take it is that when the ac cuts in the idle rpms drops and makes the engine run rough
This is normal as the ac compressor takes up to 5 hp to drive it
what you need is an electric controlled vacuum pot connected to the accelerator lever so that when you switch on the ac the power to the ac clutch energizes the pot and vacuum pulls the accelerator lever to maintain the set idle rpms
such an item is found on most early carby operated engines

Aug 06, 2016 | Cars & Trucks

1 Answer

How can I stop the truck from shutting down from idling bumping cruise up doesn't work

without know what engine and fuel system you have any answer is meaningless
but I will attempt to fill in the blanks
if it has a carby then set the idle off the throttle screw and set it to ( manual) 750 rpms ---auto--850 rpms
if it is EFI then run the fault codes to find the sensor that is failing and fix all the other faults
bumping the cruise( I take it that you tried to alter the cruise control setting) would make no difference as it is set at what ever rpms you have when travelling

Feb 15, 2016 | Cars & Trucks

1 Answer

Engine shuts down partially between 25-27 rpms. What is wrong?

Could be dirty injectors, no oil, Improper idle setting, any number of different things. Without knowing more about the engine, it's hard to say. Does it happen at lower RPMs? What kind of engine is it?

Mar 13, 2014 | Cars & Trucks

1 Answer

Car idles high

when it is cold out there is a sensor on the throttle body that has the rpms to go high so the engine warms up fast then it suppose to drop back to nornal. the sensor is a idle air control valve. here is my link

Nov 12, 2012 | Cars & Trucks

1 Answer

Car wants to turn off


Thanks for writing to

I would check idle adjustment first. There are two idle controls on our cars, so it's not as straight forward as you'd think. There is the base idle (controlled by the screw) and the idle air control valve, controlled by the computer. This computer controlled value is used sparingly when needed. Mostly the car relies on the idle screw control. If this is set too low however, the computer will take over, and you'll think you have idle set correctly, until you let rpms drop from 2,000+ to idle, it will stall, or almost stall.

Adjust the idle screw up until idle raises to 1,000 rpms, then adjust it back down until you get to 850, but no more. If you adjust it more, the idle will stay at 850 because the computer controlled idle takes over. A lot of people (me included) will keep turning the screw all the way down, thinking everything is fine. Don't do it. Stop adjusting once you hit 850 rpms with a warm motor.

This is the easiest, quickest thing to check, so do it first before trying anything else.

Thanks for contacting Fixya and please accept the solution if it has helped you.

Jun 07, 2010 | 2006 Dodge Charger

1 Answer

My 2002 dodge ram starts with revolutions too high ( sometimes more than 2100 RPMs) I have already seen blue smoke coming out the exhaust pipes when the truck starts. after that truck idles fine at 600...

This sounds pretty normal since when you first start the truck the engine management system is probably in cold start mode by default. This will cause the engine to do what you are experiencing. It just takes a minute for the sensors on the engine to register with the computer and report on the parameters they are supposed to monitor. Please rate the helpfulness of my answer.

Dec 30, 2009 | Dodge Ram 1500 Cars & Trucks

3 Answers

I have the same problem...

Minimum is usaully 10-13 lbs at idle. A good rule of thumb is 10 lbs per 1,000 rpms.

Jul 07, 2009 | 1996 Volkswagen Cabrio

1 Answer

Idle control

tps (throttle position sensor) controls the idle and the ideal idle is around 700-850

Oct 01, 2008 | 1987 Nissan Pickup

2 Answers

2004 Ford Ranger Low Idle

I figured out what was going on. supposedly on ford rangers the Idle Air Control Valve (IAC Valve) goes bad. i got a trouble code looked it up and sure enough it is the IAC Valve. Under 100 bucks for the part

Jul 04, 2008 | 2004 Ford Ranger

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