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WOULD A STUCK OPEN THERMOSTAT MAKE THE ENGINE ...
2000 Kia Sephia
December, 22, 2011 AT 4:42 AM
Hi would a stuck open thermostat make the engine run rough, also could a clogged gas cap do the same?
FOUND 4236 RELATED QUESTIONS
Idles Rough/changed Ects
December, 22, 2011 AT 12:01 PM
The stuck open thermostat would not cause the problem but a faulty gas cap would as it involves the EVAP system.
December, 22, 2011 AT 3:32 PM
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
December, 23, 2011 AT 8:56 PM
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.
December, 24, 2011 AT 9:10 PM
Thanks for the reply-I followed what you recommended to do and it did smooth out substancially-
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