i have a gsr motor in my hatch and when im driving it normal and hard the temp needle goes up and down up and down all day long! This is very weird! could it be a bad thermostat? sensor? this just started about 2 weeks ago... anything,.. help

btw.. has stock civic radiator and fan.. i never heard or saw fan come on at all since i got he swap about a year ago.

 

if your fan isnt coming on it isnt the ECT or the thermostat, because the ECU would read it as hot and turn on the fan, even if it really wasnt hot. What exactly is the gauge doing?? is it going up and down really fast?

 

does it stay down while moving, and then go up while sitting still?

 

run your car until you see the fan come on, make sure its working. Temp sensor maybe?

 

Just a word of advice, start at the basics. Check your coolant level. I had a problem with my needle going up and down, Had old *** coolant in rad, probably about 3 years old, changed it and needle stopped moving. If your problem keeps up you can go on to the next step. thermostat , sensor, ecu. etc, etc.......

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ham &raquo;</TD></TR><TR><TD CLASS="quote">if your fan isnt coming on it isnt the ECT or the thermostat, because the ECU would read it as hot and turn on the fan, even if it really wasnt hot. What exactly is the gauge doing?? is it going up and down really fast?</TD></TR></TABLE>

yes the gauage is going crazy. up and down really fast..

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beaterdriver &raquo;</TD></TR><TR><TD CLASS="quote">does it stay down while moving, and then go up while sitting still?</TD></TR></TABLE>

yes! and when i accelerate the needle goes down all the way past cold..

 

maybe the gauge/sending unit for the gauge is bad? My friend is having some of the same issues with is CBR600 and has done everything other than replace the gauge and still has issues.

 

Check you wiring. I am willing to bet it is a loose connector somewhere.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM-97CX &raquo;</TD></TR><TR><TD CLASS="quote">Check you wiring. I am willing to bet it is a loose connector somewhere.</TD></TR></TABLE>

will do