Ok. I have replaced my whole godd@mn ignition system. And still....

Ok, so i got a new starter and my clutch worked on. On the way back from the tranny shop... She died. ok... wtf... Anyhow. In the last 3 months, i have replaced the ignition power transistor twice, plugs and wires, and the coils. The whole iginition system is new. yet?

Still.... I am not getting a spark. It is turning over, but not spark. Could it be some kind of grounding issue? i am thinking this is the case and i keep blowing my power transistor. NEED HELP OR SHE'S UP FOR SALE!

have you tried the ECU?

As mentioned, the coil transistors (1-4 and 2-3) are directly driven by the ECU. If they aren't firing reliably, it could definitely be an ECU problem. Is the failure reproducible? IE. is there any possibility a reasonably competent dealer service technician could recognize the problem? Just wondering if a diagnostic pass might be helpful. (Similar to $65 in my experience.)

(Oops -- from your sig, you appear to be talking 3000, I've no idea what that configuration is :(!)

I have no idea what you are trying to say trev.

If theres no CEL a Scan wont do anything.

Take ECU pop open, and look for burns, melted or leaky capacitors.

exactly this is so common its unbeileveable ive had 3 and this happened twice.

i just happen to have an ecu, wouldn't run egr monitors and i live in california so there were some smog issues, but it will run a 98 gsx. but u have a talon?

Well, I'm trying to tread carefully since I'm new to hands-on Eclipse!

However, I was saying the ECU directly fires the plugs in the 2.0L Eclipse, and so a bad ECU could be a good explanation (don't know about the later engines though.) I didn't see a reference to the CEL light either way, just that he had no spark (plus, I'm not presuming "diagnostic pass" to be limited to an ECU error code scan.) I suggested an experienced technician (someone who is always working on these cars) might identify the problem more quickly than most of us -- might have previously wrestled through that specific problem.

On the Sig -- looks like I accidently keyed off yours -- that's an oops! :o

So, for what it's worth, that was what I was trying to say!

Sorry for the delay. i have been out of town for the weekend.



I've heard some symptoms of a bad ECU, mainly that there is no CEL. Besides poping it open and taking a look, is there anyway i can test the ECU?

you don't have to crack it open or unplug it if you can get your sniffer down there to atleast pull it out and smell it. if it smells like burnt electronics it's probably a good bet it's been fried.

do you have any friends with a similar car? if you can find a buddy borrow their ECU and pop it into your car. see if it fires up.

just asking, do you have the coil plugged in?

When mine burned up last December 26, it stunk out the car for two months (dead in my driveway), thought it was a short somewhere in the cabin wiring -- would never have guessed the ECU internal power supply fried! When I removed it and brought it into the garage, it proceeded to stink out the garage -- took a LONG time to air out the car!

You can check it with an analog voltmeter by probing two of the pins on the ECU read-out connector (ignition on). If you have a Hayne's manual, the info is there. If it's alive and there are no codes, the output will be a continual high low pulse train. (Which doesn't necessarily mean it's fully OK, but at least it's alive and thinks so.)

im not big on the 4g63 but i had the same problem with my 420a and i had the same symptoms and it all ended up to be bad crank angle sensor...so if its any help then try that...sorry couldnt help more

Yes. I can get it to run for about 10 minutes before it completely dies and I cannot get a spark.


Im the only DSMer in my group of friends :( I cannot smell burnt electronics in or around the hood at all.


I was under the impression that if it was the crank angle sensor, that it wouldn't turnh over at all... Can anybody confirm that?

is this your 93 or 95 talon?

Unless something changed with the later Eclipse, the ECU is located in the cabin behind the lower center console area of the dash, not under the hood.

95



Even in the cabin i cannot noticeably detect any smells. Then again, i do have very strong car freshener... :thumbsup:

Still having the prob and i noticed something interesting yesterday. I got it started for the first time in a WHILE. Anyhow, my VSS or vehicle speed sensor had gone bad and i had lost my speedo before all this had happened. Well i cruised around the parking lot of pep boys while it was still getting a spark... and WHALAH, i had a working speedometer. WTF? How could this be? I threw a bad VSS code, had no speedo. I let it sit, then it works.

Could there be any link between the speedometer and the spark? --> hahah that sounds so noobish...

Ok problem solved... sorta...

I went to the car today, swapped my power transistor with my old non working one. This transistor makes the car only fire on 2 cylinders. Well guess what. I plugged it in, and it ran on two cylinders forever.

So my brand new power transistor (3rd in a few months) fried. What could cause this? Bad luck? Bad ground connection? any suggestions?

Oye This was happening to a friend of mine kept frying a fuse ended up being a faulty MAF and CAS.

If you can find the mitsubishi Tech manual for this car, got through the trouble shooting section.

excuse me for sounding noob-sh... but... What is the CAS?

Yeah,

but I meant crank angle sensor. but maybe the cam angle as well.