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Will not start cold engine hot outsideruns good when cold out but after warm up fan cooling fan will come on and no start

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1998 isuzu missing alittle bit. Running hot. Radiator replaced. What is my problem


missing a little and running hot are indicators that you could have a head gasket problem. have it tested for a bad head gasket. the missing could be caused by coolant leaking into the cylinder causing a misfire, because of a bad head gasket. running hot is another indication of head gasket. if the rad cooling fan working properly. I think these have what is called a clutch fan which means, when engine is cold the fan turns slower than it does when its warm. if its turning slow when warmed up like when its cold it could be the fan causing the hot running.

Sep 28, 2015 | Isuzu Cars & Trucks

1 Answer

Cold engine gauge in the car


Did you change thermostat?

Jan 21, 2014 | Cars & Trucks

1 Answer

2000 NISSAN 4X4 P/U A/C SYSTEM WILL BLOW COLD WHEN OUTSIDE AIR TEMP IS COOL, WHEN HOT OUTSIDE AIR BLOWS HOT.


your auxillary fan is not working. this fan is responsible for cooling the freon that is being circulated in your cooling system... check if there are any loose wires in front of the engine bay.

the auxillary fan is located right beside your radiator fan.

May 17, 2012 | 2000 Nissan Frontier

1 Answer

My heater, when parked and idle, cools down. The heater will heat again once I begin driving, but this is freezing me as I sit and wait for my kids at school. It blows cool air while I am parked and will...


It could be the electric fan is going on too easily.
The radiator and hoses should be almost too hot to touch.
And when cold, the fan should not really do on at all.
But the thermostat could be opening too soon also.
There are two hoses to the radiator, and when you start a cold car, only one should slowly get hot.
The other should stay cold until the thermostat opens, after the engine is good and hot.
If both start slowly getting warm at the same time, then you need a new thermostat.
And also make sure you have enough coolant in the radiator.

Dec 20, 2010 | 2007 Chevrolet Impala LS Sedan New Cars

2 Answers

Shuts off when it is warm outside car runs good when the weather is cool to cold. now that the weather is in the 70's it shuts down, acts like it isnt geting fuel


Hello,

I would also be compelled to suspect the lack of Fuel, towards from the Engine, normally the Carburetor combines fuel and air, into a highly volatile mixture. So when its hot, I would think it evaporates so quickly before it reaches the engine. Try to tighten any pipes, or look for leaks around the Carburetor.

Apr 02, 2010 | 1994 Ford Taurus

1 Answer

No heat air is blowing cold


First you have to identify what causes the problem.
To do this you have to:
1) When engine is cold check the level of coolant. If it is low fill it up.
2) Start engine and check if engine reaches regular temperature. If your engine is not heated enough it means your thermostat does not work properly and should be replaced.
3) If engine temperature is normal, then check the temperature of pipes that go to/from heater core. These pipes are located up the fire wall (easier access is from the passenger side). If pipe/pipes are cold (even engine is worm) it means you heater core is plugged and should be flushed. Keep in mind, flushing the whole cooling system is different from flushing heater core.
4) If pipe/pipes are hot/warm, turn off the fan, switch controller to the hot position, wait for 3-4 minutes and turn on the fan. Note if the cold air blows first or warm air blows first but it cools down in 5-10 seconds. If the air blows cold than it is most probably the problem with blend door or blend door actuator.
5) If air blows warm first and then cools down, then while running engine and remaining the transmission in PARKING position, press on the gas pedal until your engine reaches 3,000 RPM. Check if your heater blows warm/hot air. If it does, then your water pump does not work properly and should be replaced. If the air still cold, I would suggest to flush the heater core.

Oct 22, 2009 | 1998 Ford Taurus

1 Answer

Heater not working


First you have to identify what causes the problem.
To do this you have to:
1) When engine is cold check the level of coolant. If it is low fill it up.
2) Start engine and check if engine reaches regular temperature. If your engine is not heated enough it means your thermostat does not work properly and should be replaced.
3) If engine temperature is normal, then check the temperature of pipes that go to/from heater core. These pipes are located up the fire wall (easier access is from the passenger side). If pipe/pipes are cold (even engine is warm) it means you heater core is plugged and should be flushed. Keep in mind, flushing the whole cooling system is different from flushing heater core.
4) If pipe/pipes are hot/warm, turn off the fan, switch controller to the hot position, wait for 3-4 minutes and turn on the fan. Note if the cold air blows first or warm air blows first but it cools down in 5-10 seconds. If the air blows cold than it is most probably the problem with blend door or blend door actuator.
5) If air blows warm first and then cools down, then while running engine and remaining the transmission in PARKING position, press on the gas pedal until your engine reaches 3,000 RPM. Check if your heater blows warm/hot air. If it does, then your water pump does not work properly and should be replaced. If the air still cold, I would suggest flushing the heater core.

Oct 17, 2009 | 1998 Ford Taurus

2 Answers

Car over heating when stopped in traffic but not when movin


Hi. the first test will be to open the hood and inspect the cooling fans. check to see if the fans are activating in intervals during the running cycle. if you don't see any fan rotation at all, this will confirm cooling fan failure and you will need to replace the fans or fan relay. Now, if the fans are running and the car is continuing to run hot when stopped, i would move to the next inspection point. the next problem spot will be a faulty water pump or faulty thermostat


If these two devices are malfunction in any way, it will cause the symptoms you are experiencing. at this point. the first thing is to make sure those fans are actually working.


Please rate and have a great day:)

Apr 28, 2009 | BMW 318 Cars & Trucks

1 Answer

2000 chevy lumina. Is fan supposed to come on when car started


no fan comes on when engine cold start up .but it will come on when you turn on air conditioning or defrost on .if engine idling a while when temp get 190 degree the fan will kick on.if over heating you got air in system .wait until cools check coolant add more .crank engine let it idle few. minutes when start warming up turn off engine wait a while before removing radiator cap so you wont get scald.add more coolant .crank it again starting warming up turn off engine wait a while .add coolant .keep doing this procedure until your coolant stop dropping off .if you do this more than 6 times you got a leak some where.check crank level for signs.if oil level higher than normal.if everything looking good.when engine cool make sure add coolant to over flow jug cold level mark.

Apr 28, 2009 | 1999 Chevrolet Lumina

3 Answers

Car just blows out cold air from heater


there is something wrong with your coolant system. Turn your car on, check your fan. If the fan runs nonstop, your relay switch to the fan needs to be changed. If its not the fan, its the thermostat. The thermostat is broke. If the thermostat is broke, it prevents your vehicle from warming up. The thermostat is a temperature Regulator for the engine. If your antifreeze is running nonstop in a circular motion, your engine will run cold. Your engine wont start that cold in the winter either.

Dec 03, 2008 | 1995 Honda Accord

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