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post #1 of 10 (permalink) Old 17-01-2020, 04:08 Thread Starter
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McLouis lagan 251

Hi all can anyone advise me regarding an over heating problem, on the flat and ticking over also small hills, it runs just under the half way mark on the temperature, once i hit a steep hill (glenshee climb or the lecht) it overheats and becomes really slow, and im down to 2nd gear, some one mentioned replacing the thermostat any help would be great.
thanks in advance
john
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post #2 of 10 (permalink) Old 17-01-2020, 08:42
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Really need some more information on your van.
What year?
Which engine?

You mention that it "overheats", by that do you mean it actually goes over the acceptable temperature, does it activate warning lights?

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John
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post #3 of 10 (permalink) Old 17-01-2020, 09:29 Thread Starter
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hi eurajohn, aye the van is a McLouis 251 19TD 2002 on a fiat ducato cab, aye it goes up in to the red and i have to come down the gears, it has done this since i have bought it 3 yrs ago, someone said check the head gasket but there is no oil in the water or water in the oil, also i had someone check the compression in all cylinders and he said it was the same in each one, i hope this info helps.
thnx in advance
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post #4 of 10 (permalink) Old 17-01-2020, 10:19
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Turbo problems?

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post #5 of 10 (permalink) Old 17-01-2020, 11:53 Thread Starter
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hi bognormike, the problem has been there for the 3 yrs i have had the van, about 2yrs ago i ran in to the first owners of the van and they said that it has kinda always had a slow issue.

thnx in advance
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post #6 of 10 (permalink) Old 17-01-2020, 12:02 Thread Starter
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Hi all, just a thought but would remapping it sort the problem, just a thought
thnx in advance
john
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post #7 of 10 (permalink) Old 17-01-2020, 13:55
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The slowing n having to come down the gears was my experience when the turbo needed fixed - think it was stuck.

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post #8 of 10 (permalink) Old 17-01-2020, 17:27
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THe 1.9 motor was never known for its performance, any bigger coachbuilt on that base was notoriously underpowered.
So perhaps the lack of hill climbing is no surprise!

It would definitely be worth checking that the wastegate is operating properly as they are known to seize open.

The overheat though is, if it is normal on the flat and small inclines I very much doubt thermostat problems as if that was at fault you'd have problems all the time.
More likely something stopping the radiator doing its job either the cooling fins are blocked or possibly the internal tubes restricted.
Are the electrical cooling fans working as intended?

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post #9 of 10 (permalink) Old 17-01-2020, 18:15 Thread Starter
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Hi eurajohn, yea the cooling fan comes on and goes off ok, ill check the waistgate on the turbo also maybe do a vacuum check as well, thanks for you sensible input.
john
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post #10 of 10 (permalink) Old 17-01-2020, 18:21 Thread Starter
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Hi jiwawa thanks for that, ill check it out.
thanks in advance
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