Need a quick hand from anyone near marysville!!!!

[GooeyGus]

Hello everyone,
Today my talon just died while it was idleing. Now it wont start. CEL is on but I am not reading any codes from the diagnostic connector; I just get 0V all the time. I tried with a digital meter, LED, analog meter, and a buzzer. Nothing.

I've noticed when I turn the car off, I no longer get the "click" a few seconds later to signify the ECU clicking off (from the MPI relay). Yet, when I turn the key over I can feel the mpi relay click. BUT I also know that there are two relays inside of this, and I have no way to tell if both of them are clicking over.

I also cant get power on any of the pins that *should* have power on the ECU, yet I know the ECU is at least turning on a little bit because I am getting the CEL.


This all happened right after I changed the oil. Whenever I do something good for my car, it returns the favor by breaking!!!


Anyway, I want to see if there is anyone near by that could plug my ECU in really quick to see if it is an issue with some other system in my car, or see if it is actually an ECU failure.

Earlier today (before the car broke) I opened up the ECU for the first time and it looks flawless. No leakage or corrosion, and the car worked perfectly when I closed it all back up and re-installed it.


SO to sum it all up, if someone could stop by or if I could meet up with someone to plug my ECU into their car just to see if it works on not, I would be forever grateful!!!

My car is a 1990 with an eprom ECU, I'm not sure what the compatability through the years is, but I know it will at least work with a 90. Thanks!!!

 

[whe3ls]

have you checked the fusses on the battery cable and checked the the alternator

 

[90dsmAWD1984]

yah ill check those 3 big fuses on the battery connector i had that same issue 2weeks ago one of the number 20 fuse blew so i dont get no volt or power at all.. so just sumtin to look for if its relay u will have volt u just wont start so i know its not ut relay

 

[GooeyGus]

Yup, I've checked it all. Fuses are good.

I just took apart the MPI relay and tested it, it is working fine. The ECU is getting power because the CEL is on. If it was not getting power, the CEL would not be on. At this point all hands point to the ECU... but why would it fail while it is running and working perfectly fine??? no idea... but I'd really like to throw it in someone elses car before I spend $250 on a new ECU. Either that or if someone has a spare ECU, I'd love to be able to toss it into my car really quick to see if it solves the problem.

I dont mind driving to meet anyone... just let me know! I need to get this thing figured out ASAP, as this is my daily driver right now!!

I just put in a new ALT fuse last night... the one I had before was melted and wasn't allowing full voltage to reach the battery, but it ran fine after that.

I pulled out all the fuses in the engine bay and checked them with a DMM, they're all good.

EDIT: I pulled the fuses under the dash as well, they were fine

 

[RaptorReed]

I know you stated you looked at the ecu prior to the car breaking, but did you open up the ECU again to verify that it's still good to go? I take it this is an original unmodified Eprom that hasn't had the capacitors replaced.

 

[GooeyGus]

One of the capacitors was replaced (who the HELL changes ONE capacitor?!)

SO I popped it open and pulled the caps off just to see, it turns out the 50V 47uF (the one that is not next to another cap) cap was leaking a tiny bit. It didn't even lose enough fluid to leak outside of it's own footprint, but I guess it was enough to muck something up. I changed the caps but it didn't fix it... I guess I was too late.

The new ECU should be here in another day or so... I couldn't find anyone to swap with to verify that mine was dead so I just went ahead and ordered one. I guess we'll find out what happens in a couple days!

 

[RaptorReed]

I would have been willing to let you try mine, but I forgot I'm running a ostrich eprom emulator and thus don't have the chip in there anymore and not exactly sure where I stored it at, it's somewhere in bubble wrap in a box.