Can intake manifold gasket affect thermostat? ?

Question

I ask because I had a Mercedes mechanic run a diagnostic on my vehicle after Autozone told me my check engine light came back with a code for thermostat. Diagnostic test was complete and they said it was the intake manifold gasket.

thebax2006 · Answer

I wouldn't trust a parts salesperson to diagnose my vehicle. If the intake manifold is letting air get into the cooling system it's possible a cheap code reader could pick that code as "the problem". A Mercedes mechanic likely knows the common problems your motor has and should be able to explain why he diagnosed the intake manifold as the problem.

ugiidriver · Answer

If the gasket is bad, you will be losing coolant.
If only the thermostat is bad, you will not be losing coolant.

Rick · Answer

yep, if it lets enough pressure OUT of the water so the water can't push open the thermostat .........................

Can intake manifold gasket affect thermostat? ?

3 Answers