Question about 1995 Oldsmobile Cutlass Supreme

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Cer runs hot newrelay&temp fan dosnot seem to

Car runs hot new relay&temp fan dosnot seem to come on when it should

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If the relay and temp fan are new, and the old ones did work but not very well. Try putting on the old ones again and see if they will even choke. If they do, then it could be your new product. The only other solution i can come up with besides that, is an electrical issue, which i know from exp. can lead to a $1500 bill... good luck

Posted on Jun 06, 2010

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Posted on Jan 02, 2017

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Temp gauge peaks on 1993 dodge spirt


I have similar problem in that my rad cooling fan won't run when hooked up to temp sending unit. Sending unit works okay, displaying what seems like proper temps on inside gauge, rising & falling with engine temp. However, my fan does NOT turn on when wire unplugged from sending unit. Tested fan motor with 12v applied directly & it runs fine, so motor okay.

Haynes manual identified a faulty cooling fan relay (in a situation with your symptoms), which is mounted on the drivers side fender of the engine compartment with 1 other on a support bracket (2 others on same bracket if you have ABS), facing forward toward headlight (NOT nearby ones that are parallel to fender, which has 3 relays on a support bracket). This should work in your case, but didn't in mine.

Several of these close-together relays have the same # on them, so you could swap 2, to see if this is your problem, since normally 2 or 3 relays wouldn't fail at same time. To be sure, I bought a new generic relay of proper # from local auto parts store -- about $10-12 I think -- and installed it in the right place but fan still didn't work. Swapped the 2 relays next to each other (there are only 2 on my forward-facing bracket), both with same #, and still no go.

I'm TOTALLY STUMPED on mine, but yours should work with a functioning relay of proper #. Let me know how it goes.

If anyone has suggestions for my related problem, I'm all ears!

Jun 20, 2014 | 1993 Dodge Spirit

1 Answer

2001 Saturn sl fan not working wiring not relaying voltage. Temp sensor new, fan works if hot wired. But don't want to use this way because still a problem. New temp sensor new relay,and radiator, still...


The line is continuity... it completes the ground signal back to the pcm. Then the fan is turned on. Problem most likely, connector needs replaces going to sensor... common problem. Be watchful when placing new connector on once you have spliced the new one on, since there is only one way that it fits in and might cause damage if forced in the wrong way.

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1 Answer

Citroen C4 automatic. After car has been driving then stops, the fan keeps going until battery runs dead. The AA fitted brand new battery but problem persists. Any ideas?


Most "CCC" Or computer comand controlled vehicles supply power to the electircal components automaticaly via a relay, there will be one power source with the ignition off,& a second power sourse when the ignition is turned on,In this case the temp sensor will supply a ground to the cooling fan circuit when the engine temp reaches a specified temperature and the fan comes on. In my opinion you most likely have a relay that has malfunctioned(gotten too hot & fused internaly) find your engine cooling fan relay(s) & remove them.If the fan stops you may have found your problem.to check the power supplied to the relay you will need a simple test light, connect the clip to a good ground & probe the relay socket with the tip of the lights probe. where there is power the test light will light up. Ignition off-1 power source,Ignition on-2 power sources/ to check for the ground supplied by the temp sensor connect the test lights clip to a battary+ source & probe the relay socket again if there is a ground supplied the test light will light up, there may be more than one temp sensor in the cooling system.you should be able to aquir a wiring diagram online if you do not have a book.one of the sensors sends the temp signal to the gauge in the dash, & the other is the ground supply for thr fan relay. I hope I have been of some help.

Dec 15, 2012 | Cars & Trucks

2 Answers

98 civic ex coupe. Car runs really hot. Replaced radiator, thermostat & gasket, water pump & timing belt, numerous hoses. Car doesnt leak & has had a leakdown test & pressure tests, passed...


it could be a possibility that the engine is running at normal temperature but your gauges are telling you that it is running hot the only way to tell is to get a temperature gauge & connect it into the water system somehow to give you an accurate reading or take the vehicle to a radiator repairer & they may be able to do it for you..........hope this helps.....cheers.

Sep 23, 2011 | 1998 Honda Civic

2 Answers

Hi i have changed the head gasket on my vw polo and now it is overheating on every journey the fan doesnt seem to come on any ideas what it could be as i have put new temperature sensors and thermostat and...


Hi Marie.

Test if there is voltage to fan motor with engine hot (use a test light or a Voltmeter). If there is 12VDC to fan motor and motor does not turn, then the fan must be replaced. An alternative way to test the fan would be energizing the motor by connecting it to 12VDC. If fan does not run when motor is energized, then the fan is defective.

If fan does not get power fuse, fan relay, thermostat and wiring must be tested. If you have already replaced thermostat, test the rest.

Check the fan fuse first. Most VW use a 30 Amp fuse located in the fuse plate. Refer to the car owners manual for fuse location. Depending on the year of your Polo there is a Coolant Fan Control Relay on the main relay panel. If the relay is good it must power the fan when the engine is hot. Before going for the relay check that two of the relay's contacts are getting power. If there is no power to the relay and fuse is good it means that there is a wiring problem.

Regards.

Ginko

Aug 19, 2011 | Volkswagen Polo Cars & Trucks

1 Answer

Cooling fans on aztek no coming on, ran hot wire to fans and works. checked fuses, jumped wires at temp. sensor and fans ran after shutting ignition off for aprox. 30 seconds, replaced temp. sensor and...


there are 4 steps to check and you've mentioned all but one the relay which cuts the fan on'off. At an elec shop you check in this order power to fuse block, fuse & output side, temp sensor, relay, and fan motors. Get a new relay

Apr 28, 2011 | Pontiac Aztek Cars & Trucks

2 Answers

Sunfire overheating, not low on coolant


Sensor on the engine sends info to the computer that triggers fan relay and sends power to fan. Most often problem is sensor or relay but quick check fan itself by hot wiring it to the battery Polarity is not an issue...if you get wrong it will run backwards. If it does not run, it's bad.

Jul 30, 2009 | 2001 Pontiac Sunfire

2 Answers

My cooling fans do not work,what coul be the problem?


did you check fuse &relays if ok check engine temp sensor you 2 of them one on the engine &the other one is on the radiator

Jul 08, 2009 | 1998 Chrysler Town & Country

1 Answer

Overheating problem, fans not running when up to temp.. Temp. sensors okay, where is ECU IG fuse located on this car.


If the fans are not running, the problem is most likely the relay. You can test relay with an ohmmeter. If fuses are ok, than the fan motor will need to be replaced.

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1 Answer

Runnin hot


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