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eyob07
User
Jan 15, 2015, 4:33 PM
Post #1 of 9
(2523 views)
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He there everyone, this is a 04 corolla the code is p p0128 coolant temperature below trash hold what is this exactly mean
thank you
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 15, 2015, 7:46 PM
Post #2 of 9
(2500 views)
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It means the engine is running too cool. It is not reaching the specified temp soon enough or at all. It probably needs a thermostat.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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eyob07
User
Jan 15, 2015, 8:42 PM
Post #3 of 9
(2495 views)
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thank you for responding, actually I ve' replaced the thermostat, could this be a bad coolant temp tensor.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 16, 2015, 12:08 AM
Post #4 of 9
(2488 views)
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Does it actually warm up to normal now? CTS less likely that plug to it IMO if the problem at all,
T
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 16, 2015, 3:02 AM
Post #5 of 9
(2482 views)
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You could check the CTS wit a scan tool by comparing the CTS and IAT temp reading before the car is started in the morning but it's unlikely the sensor would do that. It's nearly always a bad thermostat.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 16, 2015, 6:10 AM
Post #6 of 9
(2477 views)
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Agree with THERMOSTAT, it's installation and some position is critical. New or not and don't gook it all up with crap either. Always use specified temp rating, T
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eyob07
User
Jan 16, 2015, 3:44 PM
Post #7 of 9
(2463 views)
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sorry for the miss spell, ya the engine warms up fine, don't know what else is associated with this, beyond the thermostat and engine coolant temp sensor, any suggestion can help.
thank you and God bless.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 16, 2015, 4:10 PM
Post #8 of 9
(2461 views)
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You don't need more suggestions. replace the thermostat as you were advised. The computer is not happy with the engine temp. Maybe you should have used a better quality stat.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jan 16, 2015, 9:12 PM
Post #9 of 9
(2453 views)
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Ditto - Quality thermostats only. I'm only beating on this for just what Hammer said - the computer isn't happy with what it sees for engine temp and you wont know till you have that absolutely know correct new or not.
No goo means don't guck one up to seal it such that the dang thing is clogged and can't close and some are meant for a certain position for a reason too - you didn't say an engine size so didn't go looking.
You have to know it's right or engine wont know what to do with itself as it warms up - done for that. If it still has a problem AFTER you go from there,
T
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