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Replaced new [water pump](/topics-water-pump-chrysler/) n...


Replaced new [water pump](/topics-water-pump-chrysler/) new [radiator](/topics-radiator-chrysler/) flushed [engine](/topics-engine-chrysler/) had new tsat but removed tstat . Everywhere I point thermal reader shows under 145f but ...

Replaced new [water pump](/topics-water-pump-chrysler/) new [radiator](/topics-radiator-chrysler/) flushed [engine](/topics-engine-chrysler/) had new tsat but removed tstat . Everywhere I point thermal reader shows under 145f but still builds up pressure?? Mechanic's Assistant: Has the vehicle ever overheated? And when was it last serviced? Just did all work. Mechanic's Assistant: What is the make/model/year of your car? 2011 Chrysler [300](/topics-300/) with 3.6l Mechanic's Assistant: Are you fixing your Chrysler 300 yourself? What have you tried so far? Replaced water pump ,radiator , fan, and [thermostat](/topics-thermostat-chrysler/) Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Still overheats then removed thermostat and still builds up pressure

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Responses

Automotive Expert
Hi I'm Bart. I'll be helping you today.

Ok I need itDo i need to start over ?
Automotive Expert
Have you performed a block test to check for Hydrocarbons in the coolant? This can result from a blown head gasket. No you're good.

No but checked oil is perfect and runs great perfect not the slightest miss..After installing everything and bleed tstat would idle perfect for over hour the minute you put in gear and go down the road it starts to climb while still running amazing
Automotive Expert
Understood. I think that is our next step here. If the system builds pressure quickly, that could be because you're getting combustion gases in the coolant.

When I use the thermal laser temperature it never climbs over 145But will try running combustion testWould it run smoothly with broke head gasket? Never had one run this good
Automotive Expert
Yes. It can.

Ok I'll try now do I get back to you ? Or start over?
Automotive Expert
You can just reply here. You can always just put "for Bart" in the subject line of a new question I'll be notified.

Thank you
Automotive Expert
You bet.

One last question would it still idle great for over hour with broke head gasket
Automotive Expert
Yes.

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