have done a KLDE swap. need help

[andywilson24]

Hi Guys,

So ive done the swap from K8 to KLDE. I have a few issues.

1. The fan stays on constant.
a. I have KLA2 ecu from 94-95 MX6 im using. (to suit similar year engine)
b. The engine only had one coolant sensor. the loom has two plugs.
c. i re-tapped for an additional sensor.
d. has made no difference. fan still stays on. it doesnt come on when ignition is on....only when you start engine.
e. i have changed sensors. didnt make a difference
f. i have checked tps. didnt make a difference.
THE FAN WAS WORKING OK TO START WITH?

2. The car is a bit jittery.
a. i am using KL02 MAF/VAF
b. sometimes it backfires

Any help would be really appreciated guys.

Thanks in advance
Andy

[davmac]

What year is your MX3?

What distributor are you using?

1. Test the coolant temp sensor that controls the fan (usually black). Reference either E2-14 or F2-140 of the MX3 manuals for the resistance versus temperature tables. These are for the temp sensor that tells the ECU to switch on the radiator fan. I believe they are keyed for different connectors, but there are 2 2 wire temp sensors and they send a different signal. 1 is for idle control (usually green) and the other for controlling the fan. If the temp sensor checks out then you'll need to look for broken wire between the temps sensor connector and the ecu. If the ecu sees open circuit (infinite resistance) then the fan will run constant.

2. Rough running may be issue of ecu and distributor combo. What is the ecu and distributor combination? Did you reuse your K8 distributor? It may not be completely compatible with the 94 - 95 MX6 ecu.

[andywilson24]

Its a 1994 mx3.

Dissy was brand new 18mths ago. It is TOT57071.

I'll have to check out those sensors.

I'll come back to ya.

Cheers
Andy