Question about 2001 Jaguar S-Type

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Sudden overheat jaguar s,4.0 v8,2001 aux fan started running after shut down. next day temp gage went max within ten minutes, with high engine temp, pinging sound. shut down w/boiling coolant. next day checked coolant level at lower end of filler tank (filled to line), does not appear to be problem.

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  • ernieholm Jan 12, 2009

    Worked like a charm. Thanks!

  • Anonymous Mar 11, 2009

    Temperture light says engine temp high. When I stop or lower engine speed sometimes all indicators will go off. If I must turn off then fan will run for few minutes but no fluid is lost and car is normal when I start the engine. What's the problem?

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Hi  ernie try changing the thermostate first as this can cause this  D

Posted on Jan 10, 2009

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My engine overheating problem is in my 2000 land rover. The fan is running and the electric fan comes on at correct engine temperature. After start up the engine runs normal the temp gage rises slowly to...


the usual suspects are:
stuck shut thermostat
clogged raiator
dead water pump
low coolant level
it's sunday, rovers don't work on sunday.
Then again, maybe its wednesday, rovers take half a day then. 25322555-21syibu3fgwpdxocjnkpw0ib-5-0.jpg

Dec 15, 2014 | Cars & Trucks

1 Answer

Having multiple intermittent problems


I guess the overall answer is yes it could be the ECM.
Code 16 is high or low system battery voltage.
Code 21 and 22 are both for the throttle position sensor.
And code 43 is for the electronic spark control which controls engine spark timing.
The ECM grounds various relays to make things happen such as turning on the cooling fan. So a faulty ECM could cause all of the symptoms. But so could a wiring problem in one of the harnesses.
Especially a ground problem somewhere.
If the alternator suddenly starts overcharging the system the ECM can shut down the car to protect the circuits. Unusual, but possible.
This info may not help much, but somebody is going to have to test the circuits when the engine dies or when the symptoms happen.

Jul 11, 2012 | Cars & Trucks

2 Answers

Why is my 2001 audi a6 is overheating 140,000 miles


Hi there:the Audi manual never talks about a 2 stage aux fan just that the aux fan runs with ac on and it can run with out ac on if there is an overheat issue on the coolant side where as the a4 info clearly states a 2 stage aux fan system that would lead me to think the early 4.2 did not use a 2 stage system. Your car is not overheating and boiling over out of the coolant tank it is showing a little hotter than what would be perfect but it is still in what Audi calls acceptable range. The whole coolant system is new I would start looking at your sensor and gage systems there is a coolant sensor in the rad but that is most likely new if they replaced the rad. The gage uses a temp sensor on the engine for the gage I would replace that sensor and test the gage with a resistance input tool we have at the dealer. Could be a gouge or the wiring to it. There is a coolant fan module that could be defective if your sure there was a two speeds to the aux fan.


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Mar 29, 2012 | 2001 Audi A6

1 Answer

Engine temp gage spikes to 260 degree when


are you sure the cooling fans are working?
Is the coolant temp gauge telling the truth?
have you lifted the hood and heard the coolant bubbling into the overflow?
Or heard the tinging sound of a red hot engine?
If he did a liquid test with the dye,and it changed colors it should have changed very fast,
Another thing to think about if he was to take the fan belt off,and pull the thermostat housing off,and removed the thermostat,Now pour coolant into the thermostat hole to almost the top,Now start the car and see which side the bubbles come from,left or right,that will be the gasket that is leaking not both.

Jan 23, 2010 | 1997 Chevrolet Monte Carlo

3 Answers

My S-type heater is not working. Blowing only cold air. Also, The temp gage goes from cold to max hot within five minutes of starting the car. Any ideas would be appreciated


Hi There
I have had the same problem, if the climate control shows different temps at either side it most possible that the heater valve needs replacing, the valves inside get rusty and sieze up, it is situated at the front o/s at the side of the radiator. If temps are the same could be the control module

Jan 14, 2010 | 2000 Jaguar S-Type

1 Answer

Cooling fans in op until engine is shut down . At idle, in traffic, temp gets high, hen wmoving, temp goes back to normal. When I shut down the engine the fans start to run as they are supposed to when the...


Check out clarks-garage.com he has a complete troubleshooting guide for your cooling system along with a schematic. In short, check the low speed resistor on the firewall. Should be around one ohm.

Oct 10, 2009 | 1985 Porsche 944

1 Answer

Temperature gage rises and engine overheats on our honda accord. thermostat has been changed and it is not any better. whats next?


The next thing to do is to observe the car as it idles for 10 minutes to ensure the electric radiator fan is coming on if not replace the fan relay if that doesn't work replace the coolant temp. sensor that activates the relay that activates the fan after that ti can only be the fan itself that is if the fan is not coming on.

Aug 02, 2009 | 1997 Honda Accord

2 Answers

2001 Oldsmobile Alero overheating


I think you started out looking in the right places. Replacing the coolant, thermostat, relay and sensor are all fairly inexpensive.

I believe you either have blockage in the system (especially if you're using tapwater), or your water pump may be failing.

I would first either take it to a radiator shop and have them flush the cooling system out thoroughly, or else pick up a chemical flush kit and do it yourself. This involves more than just drain and refill.

If this doesn't work, your next step will probably be replacing the water pump. At almost 200k miles, it's probably about due anyway.

Jun 16, 2009 | 2001 Oldsmobile Alero

2 Answers

95 grand am radiator fan only runs with AC on


Cooling Fan Temp Sensor is the First thing You Check (with what you have described) Cooling Fan Should ALways come On When The A/C is turned On as A/C Adds A Load to Engine, If Temp Sensor is Faulty it Will Not Give GROUND Signal to ECM >For COOLING FAN >RELAY to Give ground and turn ON The Fan.
There ARE 2 temp Sensors that Serve Different Purposes 1 is for Dash READING GAGE & Or TEMP LIGHT the Other is For ECM or Fan Relay (SAME Thing) you Said>""can disconnect the sensor and fan continues to run" < This Leads me to think you Changed the Wrong One. Not Questioning your Skills Just Here to Help.
TEMP SENSOR FOR 3.1L V6 is Located upper RH rear of engine compartment, near exhaust system. Temp SENSOR for 2.3L Engine is Located in LH rear of engine compartment.
I Hope this Helps Lead you to a NON-OVERHEATING Pontiac.
Good Luck and Have A Great Evening. rejakwilson

Feb 04, 2009 | 1995 Pontiac Grand Am

1 Answer

Caravan 1994 (3.0 Liter engine) No heat


U have a problem with the air temp control blend door actuator motor, very common failure. In order to replace this part the dash must come out.

Jan 14, 2009 | 1994 Dodge Caravan

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