Question about 1995 Oldsmobile Achieva

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ENGINE GETS HOT WHEN IDELING OR DRIVING ABOUT 25MPH BUT WHEN YOU SPEED UP IT STARTS TO COOL DOWN THE FAN IS WORKING

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  • Oldsmobile Master
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Sounds like the thermostat is stuck open or you water pump is failing.

Posted on May 27, 2010

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Cooling fan starts when switch on the engine, and the fan stops when i switch off the engine


cooling fan mainly turns on when your ECM senses that your engine is getting hot and there is no wind cooling down the coolant to cool your engine it usually kicks on when your idling or driving at low speeds to pull in the wind to cool the coolant. the fans don't need to turn on when the engine is off

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2003 chevy monte carlo passenger side cooling fan not working


The passenger side fan should only come on while driving at highway speeds, to offer additional cooling help to cool down car, the Driver side fan is for when parked, ideling, city traffic, and air conditioner use. At least that is what i was told.

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1989 ford f 150 i been driving and the engine stop fuel have don't start


could be fuel pump,check for fuel see if fuel pump supplying fuel and you are getting spark.make sure ignition timing is correct and the idle speed setting correct check the under hood emissions information label.also check engine make sure engine not over heating check cooling fan clutch see if cooling fan clutch is okay by turning it by hand if engine is hot cooling fan should have resistance if engine is hot, if cooling fan feel loose no resistance the fan clutch is bad.

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I have a 2006 elantra and whenever i slow down or stop the needle goes into the red zone and the a/c blows hot air. when i drive faster again the needle goes back to normal and the a/c blows cold air...


your electric fan for the AC is not working for whatever reason so when idles its all getting hot the engine and the AC system .This sort of work can be difficult to diagnose correctly and a code reader is about as good as a bible at mosque so seek the advice of a skilled mechanic who should be able to pin point the fault in seconds

May 30, 2011 | Hyundai Elantra Cars & Trucks

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Idels ok, and when problem started noted after 5 min driving...now sooner...not till 25mph now at slower speed...it seems to build up to a back fire , cough/sputter...lurches, it bogs down some then...


check fuel pressure it should be 9-13 psi with engine running.You will have to remove fuel filter and install a fuel pressure adapter part #TA37650 to be able to check pressure.

May 22, 2011 | 1993 Chevrolet K1500

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When idling my jeep overheats. The cooling fan is running and it speeds up when temperature goes up. The temperature gets close to 260 degrees and the engine tries to stall. when I start moving it cools...


At idling speed an engine does build up a lot of heat and the cooling fan will kick in. In slow moving traffic or traffic jams the temperature gauge can touch the red - particularly on hot days. The reason it cools down when you start moving is because of the air flow through the radiator.

Presumably there are no leaks from the cooling system otherwise you would have mentioned it. In normal circumstances the fan will not be running as you are driving at speed, as the air-flow through the radiator is sufficient to cool things. The fan only kicks in to get rid of excess heat - and this usually occurs at idling speed or after you have parked the car.

If the fan is running all the time as you drive, this points to either a fault in the fan switch, or the car is running too hot. presumably in normal driving the fan isn't running and the temperature gauge reads normal?

It is common - in stationary traffic many cars overheat (particularly big engined models) try to stall and 'cut out'. Restarting can be difficult until the engine cools down.

Is your car overheating in normal driving conditions or just at idle speed? Overheating in normal driving conditions can be caused by things like a failing water pump, blocked radiator, collapsed hose, faulty thermostat or, in the worst case scenario, cylinder head problems.

Overheating at idling speed is 'common'. Check your coolant level. If your car isn't using/losing coolant then there probably is no major problem. You can flush out the cooling system and refill with new coolant - and also check your radiator. Are the cooling fins crumbling with age? Or maybe they're partly clogged with insects and debris from the road? A blast with a hosepipe wil sort that out ..

The question is how much does your car overheat in normal driving? If it doesn't .. it appears as though you have nothing to worry about as such. Most cars have 2 speed fans... the 2nd faster stage kicks in at some point dependant on engine temperature. Perfectly normal.

Aug 14, 2010 | 2003 Jeep Grand Cherokee

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My 2002 Ford Escape stalls on a hot day.


I can give you a lead on the problem you describe. Since the problem occurs with Hot weather use, there should be a temperature sensor involved. I envision a STEP-UP circuit triggered by the Heat which probably increases RPM by advancing the engine timing. Either that or it orders the ISO valve to increase RPM.

Since you are experiencing the problems at 25MPH and below the Timing may not be fully advanced. Thus the Computer is not getting a signal from the Temperature sensor or the signal is going to the Computer and and it does not respond.

There are usually 2 speeds for the Cooling fan. High Speed may not work and it may need to work to kick in the RPM STEP-UP.

Please contact me when you find the problem so I can share. You seem to be doing your best and I hope my theories lead to a solution.

Jun 27, 2010 | 2002 Ford Escape

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I hace a 1990 firebird V-6 and at stop lights its idles bad and then dies the check engine light comes on, when i start it back up and drive the check engine light disapears. It is also getting hot while...


SOUND LIKE FAULTY IDLE SPEED CONTROL OR FAULTY FUEL INJECTOR OR A INTAKE VACUUM LEAK.IF GETTING HOT WHILE STOPPING.CHECK COOLANT FAN FUSE AND RELAY.IF BOTH GOOD.HOT WIRE COOLING FAN TO CAR BATTERY USING JUMPER WIRES.IF COOLING FAN DONT WORK REPLACE THE MOTOR.IF FAN WORKS.COOLANT TEMPERATURE SENSOR IS BAD.ALSO HAVE CAR SCANNED TO SEE WHAT CAUSING CHECK ENGINE LIGHT TO COME ON.

Feb 19, 2010 | 1990 Pontiac Firebird

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