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Shodaman

Probationary Member
4
0
Aug 17, 2006
Lincoln, Nebraska
OK... I know I am going to take some hounding on this but I am interested in what type of feedback I will get.

I have a 1990 Talson AWD with a manual transmission and I have loved it from day 1.

One day after I started it the tach. started jumping around and the engine stalled. I smelled the distinct smell of electronic death in the car. I attempted to start the car and of course, nothing.

Towed it to my repair guy and he said that it is probably the ECU.

A factory ECU was litteraly going to cost me an arm and a leg.

So, a remanufactured/aftermarket/something was installed. My mechanic who I trust said that in the seven years that he has been using them he has only had one bad expierience. So I said let's go for it.

My ECU was shipped to Florida and a replacement one was shipped to my mechanic which he installed.

The car was back to normal.

Two days later my "CHECK ENGINE" light comes on.

I did not have time to take my car to my normal mechanic so (here we go) I took my car to a Firestone Auto Care Center.

They indicated that they could not read the code that the computer was generating with any of their equipment. Oh, and by the way it will be $80.

No biggie, but my question remains.

What should I do?

If I disconnect the battery for a while and allow things to reset the Check Engine light does stay off until I drive the car for aproximately 30-40 miles. Then the light returns ON and stays on. The car appears to me to be running normal.

Thank you for any advice that will help me get my car running. My previous car was a 1966 mustang that I did all of the work on. Before that a 1964 cadillac that had more torque than a Dodge Viper (really). This is the newest car I have ever owned and am a little intimidated by all of the electronics under the hood but if you tell me what I should do I will jump right in. I've held crankshafts in my hand that take me to work on a daily basis now but electricity has always been kind of magical to me.

Thank you and I appreciate any input anyone gives me.
 
You're going to love this. First you're going to need to get a manual or a cd manual but i'll explain it the best i can coz i have one ;). Next get an analog voltmeter. If you don't know the difference analog has a sweeping arm instead of numbers. You can get one for around 10bucks at a store. Locate the ALDL or data link connector under your dash to the left hand side. It's going to be square with small pins visible. It may have a black cover on it. Remove the cover. Now you should see 4 pins in this connector, 3 for manual. Take the red lead and touch it to the one in the upper left. Next take the black lead and touch the lower right. The voltmeter will start sweeping and this is how you interpret it. long sweeps are the first digit, short sweep represent the second. An example: _____ ---, this would be a code 13. It will read all codes out and then repeat them 3 times. Let me know how this works for you and if you have any ?'s feel free to ask!
 
Hmm.... Try going to Autozone, there OBDII reader there is good :) try it, its free. Oh wait you have a 1g so you have OBDI

Okay try to get your hands on some sort of Pocket Logger or something because it should give you a good reading.
 
Could be a bad sensor reading somewhere else in the car? Im not saying it's not your ecu or anything but you know what i mean, it could be something else new that popped up.
 
Thanks DieselTech. I actually have the factory manuals for the car. I'll give it a try... I guess I never tried this because the Firestone Auto Care place said that they couldn't read the code with any of their high end Snap-On equipment. What I am fearing is that the ECU is for some other DSM model that is compatible.. and the codes don't line up? Is that a possibility? Anyway.. I'll get my voltmeter out (yeah, I got one) and see what kind of message my Talon can send me.. I'll keep everyone posted of this endeavor..

Long live the Eagle Talons of the world..
 
Sweet. I did this a long time ago when i was just a young technician. Diagnosed the car properly and made a happy customer. Our fancy Snap-On scanner wouldn't work either, but our 40yr old analog voltmeter did. Also I have an automatic and diagnosed the problem in it (Bad TCU). Even though i could tell since it was in fail safe mode, but better safe than sorry.
 
I would recommend getting a data logger anyways. It gives you all kinds of info you need to keep your car alive/tuned and since you a 1g you can read detonation which is nice. It also reads all you codes and allows you to clear them, but the 90 ecu didnt have the this feature so you have to unhook you battery to for 30 sec to clear them. You can get a palm, cable and software on ebay for around $100 and well worth it. :thumb:
 
JayRolla said:
I would recommend getting a data logger anyways. It gives you all kinds of info you need to keep your car alive/tuned and since you a 1g you can read detonation which is nice. It also reads all you codes and allows you to clear them, but the 90 ecu didnt have the this feature so you have to unhook you battery to for 30 sec to clear them. You can get a palm, cable and software on ebay for around $100 and well worth it. :thumb:

I just said that LOL
 
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