#1: Unsolved Overheating Problem-Couples of Symptoms Together! Author: hamed206, Location: EgyptPosted: Sat Sep 20, 2014 3:45 pm ---- 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. Last edited by hamed206 on Fri Oct 03, 2014 2:32 pm; edited 7 times in total
#2: Re: Could bad Lambada overheat the car underload? Author: Leegsi, Location: Near PortsmouthPosted: Sat Sep 20, 2014 4:03 pm ---- If its running lean that will make the engine run hot I think
#3: Re: Could bad Lambada overheat the car underload? Author: hamed206, Location: EgyptPosted: Sat Sep 20, 2014 4:06 pm ---- Temperature goes above 100 with A/C and 90 without A/C.
#4: Re: Could bad Lambada overheat the car underload? Author: badj, Location: WiltshirePosted: Sat Sep 20, 2014 4:51 pm ---- 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.
#5: Re: Could bad Lambada overheat the car underload? Author: Edward, Location: In the garagePosted: Sat Sep 20, 2014 4:57 pm ---- Air conditioning should make it run cooler because the fan is more likely to be on.
#6: Re: Could bad Lambada overheat the car underload? Author: hamed206, Location: EgyptPosted: Sat Sep 20, 2014 7:16 pm ----
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.
#7: Re: Could bad Lambada overheat the car underload? Author: hamed206, Location: EgyptPosted: Sat Sep 20, 2014 7:16 pm ----
Edward wrote:
Air conditioning should make it run cooler because the fan is more likely to be on.
Right. So what is this???!
#8: Re: Could bad Lambada overheat the car underload? Author: badj, Location: WiltshirePosted: Sun Sep 21, 2014 1:42 am ----
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?
#9: Re: Could bad Lambada overheat the car underload? Author: kandlbarrett, Location: SwindonPosted: Mon Sep 22, 2014 3:22 am ---- 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).
#10: Re: Could bad Lambada overheat the car underload? Author: hamed206, Location: EgyptPosted: Mon Sep 22, 2014 5:00 am ----
kandlbarrett wrote:
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).
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!
#11: Re: Could bad Lambada overheat the car underload? Author: Project2062014, Location: CornwallPosted: Tue Sep 23, 2014 3:17 am ---- 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. check air inlet for half a forest .
#12: Re: Could bad Lambada overheat the car underload? Author: Edward, Location: In the garagePosted: Tue Sep 23, 2014 5:46 am ---- Lambada....love it.
#13: Re: Could bad Lambada overheat the car underload? Author: gazza82, Location: South BucksPosted: Tue Sep 23, 2014 9:18 am ----
Project2062014 wrote:
check air inlet for half a forest .
Or sand or part of a camel in this case .. the car is in Egypt!
So I'd guess the system may struggle anyway with the temps they get
#14: Re: Could bad Lambada overheat the car underload? Author: andyh2003, Location: LondonPosted: Tue Sep 23, 2014 1:11 pm ---- im no mechanic, but could it be an airlock in the cooling system ?
#15: Re: Could bad Lambada overheat the car underload? Author: hamed206, Location: EgyptPosted: Wed Sep 24, 2014 6:22 pm ----
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!
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
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check air inlet for half a forest .
