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? asked in Cars & TransportationMaintenance & Repairs · 7 months ago

Can intake manifold gasket affect thermostat? ?

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.  

3 Answers

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  • thebax2006
    Lv 7
    7 months ago

    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
    Lv 7
    7 months ago

    If the gasket is bad, you will be losing coolant.

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

  • Rick
    Lv 7
    7 months ago

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

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