The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

New engine/dsmlink no spark/start!!!!!!

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Slippi84

20+ Year Contributor
4,454
20
Jun 8, 2005
Cinnaminson, New Jersey
Ok so I finally got my call all together but the problem is there are a lot of things that got eliminated that were stock because I switched so many things over at once. I kninda by process of elimination going by how long each connector was and such wired up the stuff that was left over but the problem is I don't knwo or even think I did it all right because my car now won't sark or atleast doing the test I read about on here didn't produce any spark waht so ever. I took a plug placed it in the boot with the cable attached to the coil pack and then tried to crank it over. The car def sounds like it's trying to turn over and the crank is spinning so I don't think it's the battery or the starter. My areomotive afpr is set right at 43psi with vacume off so I'm getting fuel pressure.

My main worry is that I don't have the plugs hooked up right but dsmlink isn't giving me and codes and it did when it was hooked up another way. If someone could show me a picture of which plug goes where on a 1g 90 turbo awd I would be greatly apreciative. The other thing if someone could tell me there ways of testing for spark that would be great too cause it doesn't seem like I have spark at all:confused:
 
Ok I changed tghe coil pack the plugs and the plug wires and still no spark. I found out that my alternator fuse wasn't in but even after puttin it in and testing again same result. Can someone please tell me what connectors controll spark cause I might just have the plugs wrong. I NEED HELP ASAP!!!!
 
Remove all plugs. Inspect for fouling, etc. Pour a few ounces of gas in each cylinder and install plugs. If it still doesn't start, you have no spark.
 
Pet peeve "The car def sounds like it's trying to turn over and the crank is spinning so I don't think it's the battery or the starter." If the starter is turning the crank then the engine is turning over. Cranking = turning over unless the engine is running.

Sounds like you need a wiring diagram but I can't understand how someone puts a new motor in without a manual. This one might help.

The CAS tells the ECU when to fire the spark plugs. That starts the process, the ECU then switches the power transistor on at the right moment. That pulls the one side of the coil low and current flows in the coil building up a magnetic field. The ECU then turns off the power transistor when it wants the plug to fire, the current stops and the field collapses causing the high voltage to be generated in the coil secondary and two sparks. One in the cylinder we want to fire and the other in it's twin during the exhaust stroke. Cylinder 1 and 4 share a coil as does 2 and 3.

So if you don't have spark, you first ceck to make sure the ECU is running. The you check that the CAS works, then check the power transistor to make sure that it gets a signal from the ECU and that it drives the coil. Then you check the spark plug wires and plugs.

Most of this you can do with a multimeter if you turn the CAS by hand.

Steve
 
steve said:
Pet peeve "The car def sounds like it's trying to turn over and the crank is spinning so I don't think it's the battery or the starter." If the starter is turning the crank then the engine is turning over. Cranking = turning over unless the engine is running.

Sounds like you need a wiring diagram but I can't understand how someone puts a new motor in without a manual. This one might help.

The CAS tells the ECU when to fire the spark plugs. That starts the process, the ECU then switches the power transistor on at the right moment. That pulls the one side of the coil low and current flows in the coil building up a magnetic field. The ECU then turns off the power transistor when it wants the plug to fire, the current stops and the field collapses causing the high voltage to be generated in the coil secondary and two sparks. One in the cylinder we want to fire and the other in it's twin during the exhaust stroke. Cylinder 1 and 4 share a coil as does 2 and 3.

So if you don't have spark, you first ceck to make sure the ECU is running. The you check that the CAS works, then check the power transistor to make sure that it gets a signal from the ECU and that it drives the coil. Then you check the spark plug wires and plugs.

Most of this you can do with a multimeter if you turn the CAS by hand.

Steve
Yeah sorry I used turning over ver loosly. I didn't plan on doing this swap I had a friend help me out cause I'm busy all the time with work and other stuff so I didn't have time to do something this big or the tools. He put the engine in for me and I thought all the wiring would be done already but he gave it back to me with some of the connectors unplugged. If anyone has or can take a close up picture of where the plugs go for a 90 tsi or gsx that would make this a million times easier. I know my friend did help me out by saying that the plugs will only reach so far and hey' inside is either pink or gray so by process of elimination it should be easier cause that's how he got his car runninng. Me and my other friend tried starting her for a while and the injector resistor pack was getting hot is that normal?? I also just hooked up gm maft would that stopp it from starting if it was hooked up wrong? I have a 90 and I went off the black wire from the CAS as a friend with it already installed told me to.
 
I don't think you guys understand this was just a 6 bolt to 6 bolt swap nothing fancy. The wiring was never taken out of the car. I have pictures someone please let me know if something is hoooked up wrong or if they see any problems or if you can identify any of the pictures I have as there are two small connectors I have no idea where they go. For some reason my pictures won't upload onto this site I need but if you think you can help I will email them to you. The two connectors I don't kwno where they go are both coming off the main harness. One is right in front of the clutch master cylinder and it's a small and the two parts where something would hook up form a "T" kinda like the coolant temp sensor just smaller. The other is a speaker typ connector with one white wire with a black stripe coming from the middle of the car by the firewall kinda right behind the tb and the intake manifold. Anything at this point would help:thumb:
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest Classifieds

Back
Top