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Discussion Starter · #1 ·

A Mercedes hit my small Spark and now I bought a new one(the same :D) - 1.0l Bi-Fuel LPG, 68hp, 2013.

But these days with the new one I found an issue - the coolant temperature reaches 96 degrees in some moments and the fan doesn`t start? The check light for the coolant temperature is NOT on.

First I change the coolant cap and I tried to bleed the system and it helped a little bit, but the fan didn`t start. (It starts when ac is on).

And now I want to buy a Thermostat, but I am a little bit confused!
There are several versions:
- opens at 88 degrees celsius;
- another opens at 98;
- another opens at 102;
- another opens at 105.
Why do they open at so high temperatures?
And at what temperature does the fan need to start?
And which brand should I buy? Because I couldn`t find the original Behr Thermostat?

With my old Spark, I never had an issue with the temperature?
Sorry for my bad English!
Kind regards, Manuil.

Super Moderator
7,451 Posts
Manuil, The key possibility is in your mention of 'bleeding the coolant system helped a little bit'. That is maybe where your problem is.
Before you purchase parts you may not need, I would drain down the entire coolant system and start again.
Make sure that the heater controls are set to open hot position. Refilling in a closed position can create a 'blocked tap' effect and trapped air can cause what seems to be a failed thermostat effect.
Refill very very slowly (this is important) so to allow the fluid to slowly trickle into the tubes and the heater matrix without trapping air.
I had an old Ford many years ago and it took three attempts to refill without air block.

As a new'ish member the following link has some helpful information and well worth reading in respect of completing your Sign-Up and vehicle information sections which you left blank although I do acknowledge that you have given vehicle info within the body of your post.
I did remind you to complete your Sign-Up 10 months ago when you originally joined the forum. Helpful Guidance Using the Forum
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