I'm patient, "But can we get this done today!!!!!" LOL
if you give me the wire diagrams and tell me what to check i think i can check every thing. i have the old alarm also.
my email address is firstname.lastname@example.org. if you can send me the wire diagrams.
also when the jeep did start and ran it ran great went thru the gears along with the 4x4 stuff. and started and stopped probably 10-15 times.
the lights acted like they were tripping a resettable fuse like one of those little metal one i see on cars. and now when i turn on the flasher and head lights together the headlights dont flash like they did the other night.
and thank you guys again and this forum, i think i need to upgrade my account to a paid one because this help is priceless. ( humm i think i will use that saying in my sig line)
Just upgraded to --- Jeepforum.com: Premium Membership
Originally Posted by Que89YJ
That is a big piece of info. You have power to the coil and the ECU. So the next step is to check cam/crank sensor power, ground, and continuity from the signal on each to the ECU connector. You sound like you can handle a meter so can you reading the wire diagrams? If you cant I will walk you through it. How much did you pay for the jeep? We can get you going. I have a decent handle on the electrical as long as you are patient.
don't have a oscilloscope but i do have digital meter. and just bought a Analog display meter & injector noid light I'm ready to start testing something and will take direction & test and post the test results immediately. i have my lap top in garage with me.
Originally Posted by JWELK
Another possibility is a "spread" pin on the ECU. Also check the "ground' wire from the ECU to the coil. Do you have access to an oscilloscope? If yes, you can check for pulses on the above "ground" wire. You might be able to see a "flicker" of meter movement if you have an analog VOM. The "ground" side should be at 12 volts with momentary pulses to ground.
You don't want to know how I discovered these things.
so it looks like they cut the wires off the back of the fuse box and didn't leave any wire to reattach them to and one wire is missing. do i put a 20amp inline fuse or what? is that the correct location for the wires.
has 8 volts from pin 7 on PCM to center pin on female connector
have continuity from connector to pins 7 &24 on PCM
has 8 volts from pin 7 on PCM to female connector
have continuity from connector to pins 47 on PCM
have continuity from connector to pins 19 on PCM
NO POWER to connector from relay!
So i popped open the relay and wedged a folded piece paper to close the relay and IT STARTED 5 or 6 times and even hook up the VSS to see if that was my original problem and it still started , i took a shower and went back out to start it and ZIP - NADA - nothing but still have 12 volts at the coil (w/ folded paper), still hear the fuel pump, unplugged the VSS and still no start checked the CPS and have a bad OHM reading so back to exchange that.
could the VSS let it start and then take out the CPS. hummm i think i will leave the VSS unplugged for a bit until i find out why the relay is not closing on its own.
AND A BIG THANK YOU GOES OUT TO Firefyter-Emt for posting this FULL wiring diagram in a post that i found
so checking on the headlight switch & found that was loose and might be causing it to blink i think anyway.
I found this mess.
Is it the photo of is something happening with the integrity of the wire on the left with the darker blue spade connector? It appears to be smaller or damaged.
Originally Posted by Anticanman
Come on by! It's easy to network locally when you join a 4x4 club especially when all the clubs in your state are united and invited to each other's runs. You meet poor folk like me or run into guys that own some of the big companies you only aspire to order from and drool when you see their products. The great uniting factor is that we are all jeepers at heart and are willing to help each other out even if its just a little. That's what the jeep wave is all about: community. The wave is the tip of the iceberg.
Luck Favours The Prepared
im having this same problem mine happened after i took out the 2.5l to have it rebuilt put it back in and i get no spark replaced coil but cant see buying all new parts when it ran a short time ago cant find my crank censor i really starting to believe i dont have on lol if you guys have spare time could you post a picture of it on the jeep? thanks
If i unhook all other sensors except CPS, Cam sensor, and coil will that take the chance of one of the other sensors shorting power or whatever to the ground signal wire that goes to the computer like how the VSS does. I know that i need the other sensors to run properly but just looking to get it to start at this point.