Truck still doesnt start.

TURBOWHT · Post by **TURBOWHT** » Fri Mar 09, 2007 3:55 pm

i did the 4g63 swap in my 87 d50 and it still will not start. I have fuel. and it turns over find but no spark at the spark plug. I know everything is good because i drove the car into the garage before i took the motor out. and the CAS is plugged in. and Ignitor. idk what else to check for. can anyone help me out. help me eliminate what the problem could be.

TURBOWHT · Post by **TURBOWHT** » Fri Mar 09, 2007 4:06 pm

Was i supposed to wire in something that i didnt maybe? something that would make me not get spark.

TURBOWHT · Post by **TURBOWHT** » Fri Mar 09, 2007 6:45 pm

Here is what i was told to check for.

"Make sure pin 103 is hot all the time, and that pin 102 and 107 are getting power whenever the car is turned on."

results all pins are constant power. you think thats the problem? 102 is battery and 103 is for the battery and 107 is all for the battery i dont think that it would matter if the were all on or not. or would it? i dont think this has anything to do with my no spark.

TURBOWHT · Post by **TURBOWHT** » Fri Mar 09, 2007 8:17 pm

I have power at all the plugs. CAS, Igniter, TPS, blah blah when the key is in the on position. not sure if that helps anyone trying to help me diagnose the problem.

peregrine · Post by **peregrine** » Fri Mar 09, 2007 8:19 pm

starting to sound like a bad ignition module. they go bad. also check the inline fuse on your main power supply to the ECU. i had a similar probelm last year and it ended up just being that fuse.

TURBOWHT · Post by **TURBOWHT** » Fri Mar 09, 2007 8:30 pm

well the truck ignition worked fine. unless i did something when i wired it up to the main dsm relay. wheres the main inline fuse at on the truck? in the engine bay? that small metal box?

Dirtboy488 · Post by **Dirtboy488** » Fri Mar 09, 2007 8:32 pm

Correct me if Im wrong but I thought one of those wires was only supposesd to be hot durnig cranking?

TURBOWHT · Post by **TURBOWHT** » Fri Mar 09, 2007 8:47 pm

your probably right. i have no clue. think that is my problem? someone please help. haha im desperate i want to get this thing running.

carguyf545 · Post by **carguyf545** » Fri Mar 09, 2007 9:49 pm

i only hooked up the two powers, constant and back up and the clutch cut.

the only thing i hooked up that was only hot during cranking is the starter.lol

did you hook up the switched constant to the wire that stays hot when you are starting.

when you are starting your truck almost everything loses power, like the cig lighter, and cd player. this puts less strain on the electrical system. there is one or two wires that turn hot when the key is on and stay hot when you try and start your truck. that is the switched constant that needs to be hooked up to the ecu, coils, cas, ect. there is one wire that needs to be hooked up on the engine wiring harness. that wire is spliced everything together in the harness.

TURBOWHT · Post by **TURBOWHT** » Sat Mar 10, 2007 11:51 am

wasnt i supposed to use one of the wires that went to the trucks coil to run to the dsm ecu? anything you can think of that i should of wired up that could be my problem. or maybe something i did wrong that would cause this problem.

TURBOWHT · Post by **TURBOWHT** » Sat Mar 10, 2007 9:48 pm

here is what i have done.

fuel pump ran to pin 2 on MR. it kicks on no problem with that.

Now here is what im unsure of.

I have 1 wire running from the wire on fuse box to pin 3 on the MR.

I have the BW wire from truck coil ran to PIN 3 ON MR.

I have wired the IG1 from the ignition to the MR pin 3.

on the IGN AM (constant 12v) i ran to MR pin 5.

R on the ingiton i ran to 108 on dsm ecu.

IGN 1 on ingiton i ran to 110 on ecu.

Did i forget something? obviously i did or wired something up wrong cause all it does it turn over and i have no spark.

Bill Hincher · Post by **Bill Hincher** » Sun Mar 11, 2007 9:53 am

there is a lot more to understanding what you are doing than just what wire goes where.

First, are you wiring a complete Eclipse engine control system into a D-50 wiring? in other words, are you trying to power the Eclipse engine control system with D- 50 truck wiring?

I guess the wiring should be adressed as three sub systems, ignition, fuel management and charging system.

maybe if you focus just on ignition only, then you can answer these questions you have

you cant begine without a factory wiring diagram, you should have a factory electronic service manual before you go any further

peregrine · Post by **peregrine** » Sun Mar 11, 2007 12:38 pm

you should be trating the eclipse harness asa completely seperate entity than the d50. the d50 wiring should only be uesed for the ights, wipes, etc. use a push button to start the truck if you have to. its not that complicated unless you make it that way.

TURBOWHT · Post by **TURBOWHT** » Sun Mar 11, 2007 1:54 pm

I didnt think it was that bad besides the truck not starting. idk why its not getting spark at the plug. i have checked everything mechanically it has to be something in the wire i didnt do. What would make the car not get spark?

carguyf545 · Post by **carguyf545** » Sun Mar 11, 2007 2:05 pm

peregrine is right, it took me two days to figure it out, and i only hooked up five wires total. when i start, well i didnt know where to start, and i started pulling my hair out. i just started to do contantnuity test, one wire at a time. i found my back up power and labled it. i did not just slice into right off of the ecu. i spliced into the plug (b38) that conects the engine harness to the chasis.

you should have only spliced the b-38 plug(if that is what it is called. that plug has everything in it,

one wire at a time.

TURBOWHT · Post by **TURBOWHT** » Tue Mar 13, 2007 9:10 pm

Got it running wooooo. Took it for a drive built 0 boost, checked all intercooler pipes. then looked at teh turbo. couldnt even spin by hand. not good. Not sure what happend to it.

carguyf545 · Post by **carguyf545** » Tue Mar 13, 2007 9:26 pm

what got it running

TURBOWHT · Post by **TURBOWHT** » Tue Mar 13, 2007 9:46 pm

the problem was the act 2600 pressure plate. For some reason the truck just couldnt engage the clutch.

I put the stock dsm pressure plate on it and shifted fine. SO DO NOT TRY TO USE A act 2600. wont work.

TURBOWHT · Post by **TURBOWHT** » Tue Mar 13, 2007 9:49 pm

Oh whoops wrong section.

the electrical issue i was having was 2 small grounds off in the engine bay. It was actually one clip. but the guy that was helping me cut the clip to the ground so i didnt know what the wires were. So i found them grounded it out and started right up.