I am swapping a Wrangler 4.0L into a wrangler 2.5L.
I now need to install the crankshaft position sensor but don't know what wires have to be connected...
I have this connector at the CPS:
and this at the wiring harness:
I would like to use the last connector and change it on the CPS. I do have a male connector of the last connector, but i don't know how to install it (which wire has to be connected with which wire)..
Could someone help me please?
It's an 93 Wrangler YJ and the engine of an 93 Cherokee XJ
I'm sorry if this is bad English, but i'm Dutch
Thank you!
Well, do what Que89YJ said, if it doesnt work, consider picking up the correct female end from the junkyard off of a 4.0 cherokee, that way you can swap the pigtail from the harness over. (swap over as in cut the wires and tube clamp each wire to the correct pigtail).
So if i braze it like Flat A intead of round A, Flat B instead of round B and Flat C instead of round C nothing will catch fire?? :laugh:
And the PCM or the CPS won't break??
Where did you find a YJ in the Netherlands? and your dad has a CJ, thats awesome! I hope you got the flywheel with the 4.0L. The 4.0L has a different pattern on the flywheel for the crank sensor. Also the ECU is different as well.
I bought a complete Cherokee XJ so i'm using the engine, and AX-15 manual gearbox (including the NP-231 Transfer case).
I used my 2.5L wiring harness and inserted 2 injectors (and made some wiring longer)...
And i bought a PCM from a 91' 4.0L Wrangler so this will fit!
I installed everything except the crankshaft position sensor kable... This is right now my only problem (the connector on the XJ is round and on my harness it's flat)... And i don't dare to install it without asking / do some research...
Is it safe to install it like you said?
In holland we have a forum like this and they told me it was different so i don't know what to do right now
Kenzo, you can try this if it makes you more comfortable. Take the old sensor from the 2.5L and measure the resistance pin to pin. Do the same with the new sensor. If they read the same then you can feel comfortable hooking up the new sensor the same way the old one was hooked up.
I can't measure the resistance from the old CPS because i only have the flat connector (connector from CPS on the transmission)
Could you measure these resitance pin to pin? (than i can measure it from the round connector and know what wire is to what pin on the flat connector?)
I just installed the connector and when trying to start it has a spark...
I installed the fuel pump and when i try to start i can hear the fuel pump.
This is all correct i think.
There is only one problem.... It doesn't start yet
If i switch the key to position:On, I see the Check engine lamp for about 3 seconds...(think this is good)...
Check for codes... And yes the cel light will be on a few secs after turning key foward as the engine freaks out that there is no oil pressure lol (joke). Check codes by turning key forward, back, forward, back, then forward and leave it. The cel will blink for any codes.
Did you check spark at the spark plugs? If yes then you need to check your fuel. I know you said you hear the the fuel pump but that doesnt mean you have fuel at the fuel rail and coming out of the injectors. Spray some starting either into the throttle body and see if it starts and dies. If it does then you have a fuel problem and we can go from there.
glad it was an easy fix after you found the problem.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Jeep Enthusiast Forums
18.5M posts
726.8K members
Since 2000
A forum community dedicated to all jeep owners and enthusiasts. Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more!