i have a 1993 wrx which i have just fitted a decat pipe, however i have a spare temperature sender with no where for it to go, so i have unpluged it, i was thinking of putting a resistor across the terminals of the same resistance of the sensor, so it thinks its still their!

What have you people done out their i cant be the only one

regards
Rob

 

Hi there.
I had the very same question when I received my decat DP.
I have a 1995 WRX.
Just remove the sensor by unclipping plastic connector on its wiring in the engine bay and bobs your uncle.
The sensor only gives out a signal I believe if the CAT gets too hot, therefore if you remove the sensor there is still no signal being received by the ECU, so not a problem.
The sensor is there to detect if the gas leaving the CAT is too hot as I was told, no cat, no need for a sensor.

 

thanks, that helps me a great deal and my code 21 is definatley the temp sender and not anything to do with that, have to check it tom as i may have unclipped it or damaged it when fitting the downpipe, or it may have something to do with my alarm which has been re-installed having found the problem with that being door soloniod up duf hmm

thanks

Rob

 

Rob,
I did not see a code 21 reference in the first post.
What happens when this error occurs, I ask because mine also has a code 21 error (Engine coolant temperature sensor). This error showed up long before I fitted my decat DP.
My CEL flashes on 2 or 3 times for 10 sec duration in first 5 mins of driving each trip (engine is cold) then goes off for rest of journey. Car runs fine and temp gauge reads OK, so I just ignore it.
Regards,
Richard

 

heres an update, ive literaly just got the temp sensor off which sends out the code 21 to check it. but first have to find multi meter hmm

regards
rob

yes i know its 2100 hours damn work

 

ok all done, and all tested okay, started car and no fault, i did clean all connections,, but i will see tom as i have a 25 drive mile to work which should be long enough to develope a fault, im also gona do a wrm reset tom when i get home from work as ive heard its better to reset ecu when warm using the incar method

regards
Rob

 

Other option is to get another hole drilled in the downpipe and weld a bolt onto it so you can use the sender again.