Thread: ECU problem
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Old 03-24-2009, 04:09 PM   #1 (permalink)
dereklburt
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Join Date: Oct 2008
Location: Michigan
Posts: 102
Unhappy ECU problem

I need some more advice regarding my ECU. Here is the whole story abbreviated as much as I could:

I took the car to Monkeywrench racing just prior to winter. They did some work including adding a Walboro hi volume fuel pump and sending the ECU to Charlie for recalibration prior to tuning it.

When I went to pick up the car prior to winter, I took it for a test drive prior to trailering it home and it died on me. I had to be picked up and then trailered it back to the shop where a blown fuse for the fuel pump was discovered. It then started and we put it on the trailer and I took it home.

The next day, roads were clear and they had not salted the roads yet that season, so I drove it to work to show everyone and then took it to fill the gas tank. I then parked it, pulled the battery, and covered it for the winter as snow was expected again.(I live in Michigan).

I decided to get Mahle pistons and took it back to Monkeywrench for the install. I charged the battery prior to install and went to start the car to put it on a trailer to take to Monkeywrench. It cranked many times but would not start. I pushed it on the trailer, wondering if the battery wasn't charged good enough or if it was the fuel pump fuse again.

Monkeywrench said they would check it out. Later I checked with them and they initially thought it was the battery as well. They did the engine work and then later reported to me that the computer wasn't reading back correctly and giving some odd codes. They later said it wouldn't start for them and mentioned that the ECU might be "fried". I forwarded them the information from Charlie's ECU GOOP thread and they replied by stating that they inspected and cleaned the ECU originally but they would check it. Later, they responded with the following:

(From Monkeywrench email) It is now running though still intermittently acts strangely. I'm going to reinspect the ECU connector to see if there is an obvious bad connection in there somewhere. I have bypassed the inertia switch and immobilizer with the fuel pump wiring because there was a complete discontinuity there and it is better to run larger gauge wire directly to a high performance fuel pump anyway.


I am going to be picking it up in a couple days but
They are now stating "It is behaving but may not be 100%"

ANY IDEAS???? I am concerned as I do not want problems and I need to be able to drive it out to Las Vegas in 2 months for my wedding and so that Charlie can tune it. This really worries me as I don't know how to interpret "It's behaving but may not be 100%"????? To me that sounds like, it started and ran but it may continue to act up and could even die on you on the way home because we don't have a clue as to what is going on.

If they can't figure out the problem, what can I do? I am going to end up with a vehicle that has problems and basically if they don't figure it out, it may be my tuff luck. I am pretty irritated as they are the only ones that touched the ECU etc (except for Charlie placing a base supercharged tune).

I can't blame them if they legitimately can not figure it out, but it seems to me that they should make it right since I spent thousands of dollars having all the work I had done and part of that included the money for the reprogram of the ECU/ install and hours of dyno tuning.

Any thoughts on what might be wrong or how I should proceed? I just want to make sure my car runs and I can drive it out to Vegas and get it running properly.
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