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I have a 1991 Ford f250 it runs great first thing then the idle gets a little high next its starts sucking air and backfiring then it quits and refuses to run until it sits awhile,Ive put a new battery and cables, starter solenoid , rebuilt distributer, new coil and a complete tune up, thought it might be getting hot so it got new water pump, radiator, all new hoses and thermostat oh, got an ignition module

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  • 102 Answers

Once again sounds like a vacuum leak. Test for that with spraying brake parts cleaner in small amounts around the carb or TBI and manifold. I the engine speeds up. Bingo vacuum leak. Good luck

Posted on May 18, 2014

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6ya6ya
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Posted on Jan 02, 2017

Diesel13
  • 11 Answers

SOURCE: 1995 Chevy Cavalier 2.2L Automatic

Check your egr vavle. i had this problem with my old cavalier and it was as easy as removing it and cleaning it. It's probably plugged up with carbon

Posted on Aug 27, 2008

  • 5495 Answers

SOURCE: Ford f250 Truck 1987 460. Solenoid sticks once in

Most likely you need a new Ignition switch. The small "tickler" wires on your solenoid are staying on. You can disconnect the small wire from the Solenoid and then put a test light on it. Turn the Ignition to Start and see if the wire stays hot when you release the key.

Another problem you could have is the Starter has such a bad intermittent short in it, that it keeps the points welded together after the key is released from the Start position. You can get a starter Draw test done at some parts stores like Autozone or Oreillys to name a few, they do it free and on the truck.

Let me know the result please,

Posted on Oct 28, 2010

  • 4 Answers

SOURCE: 1991 Accord: I have a 1991 honda accord ex and after the hoses ...

You may have a cracked head, block or blown head gasket that is leaking combustion gas into the cooling system. If you dont have a combution leak detector kit you can take it to a trusted mechanic tell them the problems you've had and the parts you've replaced. Ask them to check for a combustion leak in the cooling system. A minor combustion leak in the cooling system can sometimes mimic the symptoms of overheating.

Posted on Aug 07, 2010

davidkay61
  • 23 Answers

SOURCE: running hot

Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?

Posted on Dec 01, 2008

johnjohn2
  • 5763 Answers

SOURCE: 1991 bmw 318is 4 door 16 valve motor, runs hot and radiator cold

you may have bad waterpump,the impeller on pump may be borken, just because it doesnt leak doesnt mean its good.also could have exhaust entering cooling system (bad headgasket) if pump is good have a block test done.

Posted on Sep 29, 2009

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1 Answer

1991 ford f250 batter and truck keep dying while running


Your truck may have an external voltage regulator. If it does, it will be found under the hood on the passenger side fender well. It's usually silver aluminum with Motorcraft on the top (if it's OEM). The regulator is the likely culprit by the sound of things.

Feb 13, 2014 | 1991 Ford F250

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I have a 1995 ford f250 5.8 gas first thing in the morning I have to shoot ether to get it to start after that starts right up idles a little ruff under heavy acceleration it sputters backfires and wants...


Sounds like your fuel pump starting to die. It is not getting enough gas under heavy acceleration which is 100% fuel pump slowly dying. At start up it might not be building up enough fuel pressure to feed the system but the shot of ether and engine cranking helps pressure the system just enough for the fuel pump to trickle the gas and run the engine at low rpms.

Nov 14, 2013 | Cars & Trucks

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Starts and stalls, abs, odometer & speedometer out


Check for coolant temp sensor fault, It will affect cold start and idle. It controls open loop mode in the ECU (cold, high idle, open loop) Perform an OBDII scan of the stored fault history. Also make sure coolant level is correct.

Jun 04, 2017 | 2003 Ford F250

1 Answer

92 NISSAN WITH BOGGING AT 2800 3500 RPM AND AT LEVEL SPEED 4CYL AND 5 SPEED


For this types of problem,there are few help inks to troubleshoot the problem.Click the link below to go through the troubleshooting procedure to resolve the issues :----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html-----------van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html
--------------runs lean and idles rough? http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html
-----------Car still runs Rough after tune up? http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html
------------Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
----------High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
------------Engine Backfires? http://technoanswers.blogspot.in/2012/02/jeep-backfires.html----------- Nissan stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

-----------
Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.

Feb 17, 2012 | 1992 Nissan Pickup

2 Answers

Have an idleing problem with my 1991 f250. its a 5.8L. when started cold it idle up and down irratically. once it runs for a minute or 2 or gets driven it idles consistantly at almost 3,000rps. the idle...


Hello and welcome to FixYa!

If the IACV has been replaced then go for the MAF (mass air flow) sensor replacement. You may have vacuum irregularities and MAF replacement can do the trick.

Hope this helps and thank you for using FixYa! Have a good one!

Apr 24, 2011 | 1991 Ford F250

1 Answer

Intermittent problem. Truck ran fine one day and barely ran the next time I started it. Runs incredibly rough like it's missing but not like a consistently missfiring plug but missfiring on all plugs...


Check for sticking idle air control valve and stuck open EGR valve. Both are common causes for very rough engine operation due to fuel-air ratio being too far off. Also check for large vacuum leak such as from rubber hoses connecting PCV valve to intake. Feel around for squishy or oily rubber which would indicate a leaking hole in the rubber hoses.

Sep 28, 2010 | 1991 Ford Ranger Supercab

1 Answer

1997 F250 SuperCab: my truck wants to idle high about 1700 rpm is it s...


Thats a good possibility. When the motor is running get a water spray bottle and go around the intake gasket seams and spray it. When you find the bad spot you will know.
You may be able to retorque the bolts or reseal the gasket with ATV without removing the intake. If you can't find a problem on the intake, try the brake booster or vacuum reservoir.

May 16, 2010 | 1997 Ford F250 SuperCab

1 Answer

1991 ford mustang gt automatic


Have you recently done any other work? Sounds like a vacuum leak (check lines) or maybe plug wires crossed? Good luck

Jan 19, 2009 | 1991 Ford Mustang

1 Answer

Wont idle


sounds like dirty fuel check your fuel filters see if ther blocked

Jan 07, 2009 | 1991 Ford F250

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