cooling question, need help!
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Teching In
Joined: May 2004
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cooling question, need help! i have a ls1 conversion in my car, with a 160 t-stat, aluiminum radiator, and dual electric fans. There is one sensor that is located on the front drivers side cyl head that reads the water temp for the ecu. i put a sending unit for an autometer water temp guage on the rear on the passenger side head. While idling, the guage for the ecu reads a consistant 195-196 while i had a scanner pluged in. at the same time, the guage kept rising and rising to like 220-230. as is starg to drive though, the guage eventually drops back downb to about 165. just trying to see if there is an explaination for this? thanks for any help!
Thread Starter
Teching In
Joined: May 2004
Posts: 46
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it is an electric autometer guage, i have done what i could to keep the air out of the system, it seems like it just started all of the sudden though. i wonder if the sender is just pickinup any extra heat?? im not sure whats happening, all i know is the sensor for the ecu doesnt read the same.
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TECH Regular
Joined: Feb 2004
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Yep just pull the baby out, hook everything back up and check it. If you still have temp diffs then I would make sure all the air is out of the system.
As you know senders are made for particular guages. If you hook the same guage up to different senders you will get different readings.
You might want to but/borrow one of those infrared temperature readers and hit each head and see how it compares to the guages to evaluate their accuracy.
As you know senders are made for particular guages. If you hook the same guage up to different senders you will get different readings.
You might want to but/borrow one of those infrared temperature readers and hit each head and see how it compares to the guages to evaluate their accuracy.
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Did you run your coolant crossover tubes or did you plug them? That might cause a difference from head to head if you don't have your front and rear crossovers in place. I am not saying that is your problem but just throwing it out as a possible scenario...and if they are in place maybe they are plugged with junk.
Good luck
Good luck