Would a stuck open thermostat make the engine.

Tiny
RIEBED
  • MEMBER
  • 2000 KIA SEPHIA
Hi would a stuck open thermostat make the engine run rough, also could a clogged gas cap do the same?
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Thursday, December 22nd, 2011 AT 4:42 AM

4 Replies

Tiny
KHLOW2008
  • EXPERT
The stuck open thermostat would not cause the problem but a faulty gas cap would as it involves the EVAP system.
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Thursday, December 22nd, 2011 AT 12:01 PM
Tiny
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The reason I suspect this to be atleast part of the issue is that it happens even more intensely after I get gas-I will have the cap checked by a mechanic(pressure gauge I suspect) or what?

Thanks for the response
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Thursday, December 22nd, 2011 AT 3:32 PM
Tiny
MHPAUTOS
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Replace the thermostat as well if it is suspect, if stuck open the engine may run to cool and this will affect tune as the coolant temp sensor, fit a new cap and report back what the effect is.
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Friday, December 23rd, 2011 AT 8:56 PM
Tiny
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Thanks for the reply-I followed what you recommended to do and it did smooth out substancially-
Thanks Again
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Saturday, December 24th, 2011 AT 9:10 PM

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