just did a dx to zc swap and i love it. but my cooling fan wont come on and my check eng light comes on when i shift to 3rd.. some one have any ideas??

 

there is a sensor in the lower rad hose that connects to your block...take the plug out and put a wire and connect the 2...find out if your fan runs or not...if it does, then replace the sensor ($30) from your local dealer...

 

Thats your CTS....does your temp gauge work? if so then your fan relay is out...you can either buy a new relay or install a toggle switch to your dash and flip on the fan whenever the engine needs it.

If your CTS was bad you'd throw a code as well as run hot and very very rich since the coolant sensor is dead the computer reads a hot signal coming from the sensor and immediatly dumps fuel to the combustion chamber to make up for what the computer thinks is a lack of fuel....and if your CTS was bad then you might also be having a lean misfire that you would have already noticed.

 

about the cooling fan if you have ac sometimes the ac fan plug will fit in the cooling fan. check to make sure that they aren't crossed