Anyone know if this is repairable...

[JOHNNYCASH]

http://i286.photobucket.com/albums/ll98/pborbiliac/new18.jpg
You can pinpoint from the cover which circuit blew.

http://i286.photobucket.com/albums/ll98/pborbiliac/new19.jpg
Anyone know what circuit that is?

http://i286.photobucket.com/albums/ll98/pborbiliac/new20.jpg
Side view

http://i286.photobucket.com/albums/ll98/pborbiliac/new21.jpg
I am praying and hoping that, this is the only blown circuit.

Paul

[Mr. Moose]

look at the (six?) small boards that are mounted vertically just below the 4 green parts on the right hand side of the top photo. Is one of them burnt or damaged? I seem to recall that that is the driver board for the Idle Air Control motor. When your IAC doesn't work, the board blows. If you repair it, and don't repair the IAC, when you put the computer back in, it will then blow the computer board again...

[JOHNNYCASH]

look at the (six?) small boards that are mounted vertically just below the 4 green parts on the right hand side of the top photo. Is one of them burnt or damaged? I seem to recall that that is the driver board for the Idle Air Control motor. When your IAC doesn't work, the board blows. If you repair it, and don't repair the IAC, when you put the computer back in, it will then blow the computer board again...


What does the IAC look like and how do I test it?

[yokotabrat]

It's hard to tell from the picture if that's the 3rd or 4th chip from the left that's blown. If it's the 4th from the left, that's the ISC coil as Mike said. If it's the 3rd, that's from the wastegate or fuel pressure solenoid.

I can repair that for you. I have the chips and have done a lot of those repairs.

Here's info about testing the ISC (IAC): http://dmtalon.v8eaters.com/ISC.html

[JOHNNYCASH]

It's hard to tell from the picture if that's the 3rd or 4th chip from the left that's blown. If it's the 4th from the left, that's the ISC coil as Mike said. If it's the 3rd, that's from the wastegate or fuel pressure solenoid.

I can repair that for you. I have the chips and have done a lot of those repairs.

Here's info about testing the ISC (IAC): http://dmtalon.v8eaters.com/ISC.html

Bert, it was a pleasure meeting you today! Thanks for the advice, and thank you for helping me out. Alot of stress was taken off my shoulders today, after I left. I give you a big thumbs... let me know if there is anything I can do to help you out.

Paul

P.S.
Its people like Bert that makes me proud to be a DSM'r.

[Zeppelin]

Its people like Bert that makes me proud to be a DSM'r.

Ain't that the truth. Bert has helped me out on multiple occasions too. THANKS BERT! :)

[Mr. Moose]

which one was it? If it was the ISC and you don't replace it, you'll blow the board again within a few seconds of plugging it in and turning it on....

[JOHNNYCASH]

which one was it? If it was the ISC and you don't replace it, you'll blow the board again within a few seconds of plugging it in and turning it on....

Bert tested my ISC on both throttle bodies I have and they both work so now I am going to check my fuel pressure and wastegate soliniode.

Paul

[Mr. Moose]

I'm sure that Bert knew how to test them, but if it was the ISC board that blew, the test will not always give 100% correct results. If the ISC board blew, replace the ISC with a known good one... :)

[JOHNNYCASH]

I'm sure that Bert knew how to test them, but if it was the ISC board that blew, the test will not always give 100% correct results. If the ISC board blew, replace the ISC with a known good one... :)

It wasn't the ISC chip from the looks of it, it was the FPR solenoid and wastegate solenoid chip. Hopefully it didn't damage the chips next to it, either way I am going to have to track down the wires to those solenoids and test them.

Paul

[yokotabrat]

Now that I've had a chance to work on the ecu, I can confirm it was the wastegate solenoid that caused the failure. Both ISC drivers are in working order.

Paul, you'll need to look at the wiring for the stock boost control solenoid. If the wiring is intact, you'll need to measure the resistance of the solenoid to see if it went bad. More than likely the wiring has either been cut and the 12V power shorted to the line to the ecu, or the stock connector has been exposed to the elements and ended up shorting out because of water or something foreign getting in there. Let me know if you need more help troubleshooting it.

Oh, and thanks everyone for the nice comments. It's greatly appreciated.

[JOHNNYCASH]

Now that I've had a chance to work on the ecu, I can confirm it was the wastegate solenoid that caused the failure. Both ISC drivers are in working order.

Paul, you'll need to look at the wiring for the stock boost control solenoid. If the wiring is intact, you'll need to measure the resistance of the solenoid to see if it went bad. More than likely the wiring has either been cut and the 12V power shorted to the line to the ecu, or the stock connector has been exposed to the elements and ended up shorting out because of water or something foreign getting in there. Let me know if you need more help troubleshooting it.

Oh, and thanks everyone for the nice comments. It's greatly appreciated.

Any idea where to look for this at, and what color the wires might be. I am more then sure they are cut cause of the after market boost controller, but its just trying to find this pesky thing and testing it and then fixing the problem.

Paul

[JOHNNYCASH]

Well I located my BCS/wastegate solenoid, and boy did I pull a NOOB move. In my hurry to get my car running for its trip to Colorado I plugged in the BCS/wastgate solenoid plug into my Coolant overflow bottle; this would be the culprit behind the short. Lesson learned make sure to properly check my wires before and after installations.

Paul

[Mr. Moose]

If you're going to be doing work like this, a factory service manual has all the wiring harness information, including (original) wire colors, plug configurations, etc. that would be helpful to you in anything more complicated than changing your oil. I'd highly recommend that as your next purchase. You can buy the whole FSM on CD from a number of vendors.

[JOHNNYCASH]

You can buy the whole FSM on CD from a number of vendors.

I do have this...

But at the time I was NOT thinking, I left to Texas on July 3rd of 2007, and flew out on a whim to fix her and bring her back the following Sunday. Needless to say the hacked up mess and time constraints left me in a hurry up and go mentality, I barely had enough time to register it for my trip back. I remember taking it out for a test drive on Thursday from Houston to Galveston, about halfway there my alternator (brand new) seized and trashed my (brand new) serpentine belt. I repaired it that night and left for Colorado on hopes and prayers, I remember getting to the edge Oklahoma/Colorado border when I felt my clutch going out. I just prayed and somehow made it here, I even got pulled over by a State Trooper in Amerillo, TX. I told him my story of short comings, and he just laughed and told me, "SON, I hope you make it to Denver, and not broke down in the middle of no where.... OH AND SLOW DOWN!"

Paul