Just put in an obd2 GSR swap into my obd1 LS ... starts fine but the temp jumps to HOT before the car even starts up.

I've checked and double checked the sensors but maybe I'm missing something? Even swapped out the old fan switch from the LS and put it on the GSR .. nothing. I did buy the rywire subharness and it's plugged in but I haven't pinned the ECU yet ...

Here is a quick vid of what happens ... thanks in advance!!

 

...

 

Try taking a look at the coolant temp sensor below the dizzy

 

it's plugged in, how should I check it? thanks

 

Looks like a wiring/cluster problem more then a sensor problem....assuming the engine is actually cold when you did that test. If you have/had cranked the engine, then it might be air in the line that needs to be bleed off. My guess is you need to finish your wiring.

 

change your cluster to 94-97 models, 98-01 are different.

 

Try to swap over the ect aswell.
i dont think the rywire will have anything to do with it because its just vtec and knock etc. unless you unpinned and a pin at the ecu.
be sure to double check youre grounds to..

 

cluster is 94 ls ... engine is 97 gsr

 

engine was cold for sure, that was the first time we ever cranked it haha

I checked and there was no air in the lines ...

 

I thought may have had some plugs wrong but they only reach so far so I don't think that could have got too messed up

 

yeh i thought about the ect last night as well, I swapped over the fan switch thinking that was the ect but I need to do that tomorrow and check.

didn't unpin the ecu yet ... kinda don't want to until I get this issue resolved

will double check the grounds too, thanks!

 

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Temp. Guage Wiring Is grounding out

 

good thought, I'll have to check that tonight .. I just wanna drive my car haha

 

try unplugging the single wire temp sensor plug on the head below and to the right of the dizzy looking at it from the passenger side, if the temp drops sending unit is probably bad, if the guage stays up then that wire is grounding somewhere probably between tower engine plug and sensor

 

i'm gonna go with grounding out too

 

thanks! ... we actually unplugged it and it did the same thing. Upon closer inspection, noticed that the sensor on the gsr was totally different than the one that was on the LS .. took the sensor off the LS and now it works


don't know what WAS on it haha