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Unsolved Overheating Problem-Couples of Symptoms Together!
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hamed206

Posted: Sat Sep 20, 2014 3:45 pm

Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt

MY car which is very old (2000) started to have several issues together!

Car ONLY OVERHEATS on HIGHWAY with a speed EXCEEDS 70KM. It reaches 110 degree. It will overheat also under 70km ONLY WHEN the A/C is ON. ECU indicator flashes from time to time (once per day), when flashing, the car hesitates a little, sometimes cut-out but will start immediately from the first attempt. I don't know if this is related to my overheats issue.

Also in the last two times I change the spark plugs, there were excess carbon deposits on the sparks which indicates bad fuel/air mixture. My crank sensor is new. MY lambada is 70K miles old. My MAP sensor was replaced 5 yrs ago.

I have really changed lots of parts and can't solve the problem. I'm afraid that changing the radiater wouldn't fix the problem.

Parts replaced till now:
-Both temp sensors (brown and green).
-Thermostat.
-Fan resistant.
-The relays were tested ok.
-The water pump is new (was replaced 3 months ago).
-Head gasket is ok.
-Cylinder head was skimmed due to an overheat issue occurred before. It was only 0.25mm skimming.
-Crank sensor was replaced (it was faulty).
-Motor oil was replaced in the regular service.
-Air filter is new.
-New radiater reservoir cap.

Please any suggestions?

Best.


	Hamed

Last edited by hamed206 on Fri Oct 03, 2014 2:32 pm; edited 7 times in total

Leegsi

Posted: Sat Sep 20, 2014 4:03 pm

Joined: Apr 24, 2013
Posts: 267
Trade Rating: +1
Location: Near Portsmouth

If its running lean that will make the engine run hot I think

hamed206

Posted: Sat Sep 20, 2014 4:06 pm

Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt

Temperature goes above 100 with A/C and 90 without A/C.


	Hamed

badj

Posted: Sat Sep 20, 2014 4:51 pm

Joined: Dec 17, 2010
Posts: 144
Trade Rating: +1
Location: Wiltshire

Water Pump. Pretty common culprit for those kinds of symptoms. If the rad looks alright and you're confident the exhaust isn't blocked, then I'd be looking at water pump.


	Iceland Blue '99 206 GTI (140) - SOLD KMF '05 1.4 HDi

Edward

Posted: Sat Sep 20, 2014 4:57 pm

Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage

Air conditioning should make it run cooler because the fan is more likely to be on.


	2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible.

hamed206

Posted: Sat Sep 20, 2014 7:16 pm

Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt

badj wrote:

Water Pump.

Pretty common culprit for those kinds of symptoms.

If the rad looks alright and you're confident the exhaust isn't blocked, then I'd be looking at water pump.

It is new. And Peugeot OEM.


	Hamed

hamed206

Posted: Sat Sep 20, 2014 7:16 pm

Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt

Edward wrote:

Air conditioning should make it run cooler because the fan is more likely to be on.

Right. So what is this???!


	Hamed

badj

Posted: Sun Sep 21, 2014 1:42 am

Joined: Dec 17, 2010
Posts: 144
Trade Rating: +1
Location: Wiltshire

hamed206 wrote:

badj wrote:

Water Pump.

Pretty common culprit for those kinds of symptoms.

If the rad looks alright and you're confident the exhaust isn't blocked, then I'd be looking at water pump.

It is new. And Peugeot OEM.

As per the other points then, exhaust and rad?


	Iceland Blue '99 206 GTI (140) - SOLD KMF '05 1.4 HDi

kandlbarrett

Posted: Mon Sep 22, 2014 3:22 am

Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon

If your plugs are sooty then that is car running rich. A rich mixture will cause it to run cool. A lean mixture will cause it to run hot.

If your car is running rich and overheating ypou may have more than one single problem.

I would connect to a code reader, note the codes and then clear them. Take it for a good long drive and re-read the codes.

Throwing parts at it may cure it but may also get very expensive and achieve nothing.

Do you have an exhaust leak, air intake leak or leak on any of the breather pipes under the bonnet. What condition is the air filter in. Have you tried cleaning the MAP(T).


	Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm) Why isn't my daughter an Alfaholic?

hamed206

Posted: Mon Sep 22, 2014 5:00 am

Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt

kandlbarrett wrote:

kandlbarrett, good points and good note about rich run cool, and lean run hot.

But why it run hot only with A/C on? This is a good symptom to follow that may lead to the solution.

It is very hard to get sufficient information with a DIAG test in old 206 models.

Does the fan relay (the green one) has something to do with such an issue? There are two green relays. I have changed the fan resistant, and the water thermostat during the last service. The green relay is the only thing I didn't change till now!

My mechanic is suggesting that because it overheats with A/C, so may be there are dirties between the radiator and the A/C coil.

I had an old MAP sensor, so I used it....but still the same.

I was suspecting the Lambda sensor to be the cause of the "rich" running as it is an aftermarket sensor.

Peugeot is full of troubles!


	Hamed

Project2062014

Posted: Tue Sep 23, 2014 3:17 am

Joined: Apr 01, 2014
Posts: 668
Trade Rating: 0
Location: Cornwall

your problem actually sounds like a radiator problem.
It COULD be the thermostat, however if it only over heating with the A/C on, on a hot day, Then I believe your radiator needs flushed.
Over time the radiator will develop corrosion in the tubes and reduce the cooling capacity. The coolant has corrosion inhibitor in it when new , but, they degrade over time and lose the ability to prevent build up.
1) Check that the radiator and reservoir is full of coolant.
2) If the coolant is not a clear pink or yellow, it needs replaced.
3) if you do it your self , buy a flush kit from the auto parts store and install it in one of the heater hoses. follow the directions on the kit. to flush the engine, you will need to be near a water hose.
4) use the recommended mix of anti-freeze to water...usually 50/50.
5) buy and use some "Water Wetter" it will increase your cooling capacity and mitigate this type of overheating.

6) Check that the fan is working and your belt is in good shape.

7) look at the radiator through the grill, is it plugged with dirt and other road debris? use the high pressure washers at a car wash to clean out the fins, wash out the stuff that gets in there.
Cool

check air inlet for half a forest .


	If it aint broke dont fix it !

Edward

Posted: Tue Sep 23, 2014 5:46 am

Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage

Lambada....love it.


	2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible.

gazza82

Posted: Tue Sep 23, 2014 9:18 am

Joined: Jun 19, 2010
Posts: 1600
Trade Rating: +4
Location: South Bucks

Project2062014 wrote:

check air inlet for half a forest .

Or sand or part of a camel in this case .. the car is in Egypt! Wink

So I'd guess the system may struggle anyway with the temps they get


	Down to just the 1.4 HDi. Cayman Green 2.0i CC sold.

andyh2003

Posted: Tue Sep 23, 2014 1:11 pm

Joined: Sep 22, 2014
Posts: 6
Trade Rating: 0
Location: London

im no mechanic, but could it be an airlock in the cooling system ?

hamed206

Posted: Wed Sep 24, 2014 6:22 pm

Joined: Feb 15, 2010
Posts: 242
Trade Rating: 0
Location: Egypt

gazza82 wrote:

Project2062014 wrote:

check air inlet for half a forest .

Or sand or part of a camel in this case .. the car is in Egypt! Wink

So I'd guess the system may struggle anyway with the temps they get

But we don't have a Camel in Egypt. May be the Mummy's Curse Laughing


	Hamed

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