Please Help im Dead!

[Stangracer89]

My 03 "a" just freaked out. Driving to work in town (30mph) all ok then O/D light started blinking and check engine light right after that. A bunch of codes come up. both O2 sen. not working, a bunch of tranny solenoid codes. tranny is in safe mode and the engine is maxed out rich. only have 1-2 gear and engine is running extremely bad, no power. Mech over here said it is looking to him that I have a short in a 12 volt switched hot that is confusing the OBD 2. Has anyone had this happen and could you help?

[fastblackmerc]

Never heard of that happening. Start checking all the underhood wiring, battery, alternator, etc.

Did the car overheat?

[RacerX]

Check for the cables rubbing/chaffing on the back of the valve covers/heads. Get the car washed or run through any puddles? First light to come on before any actual problem was the OD light blinking? Tranny electrical issue?

[Dragcity]

Kinda sounds likecthe main wiring harness on the driver side. Between rear of cam cover and firewall. There is a brace at the wiper cowl that is pretty sharp in there.....
Good luck.

[RF Overlord]

It's always more helpful if you post the actual codes, not just an approximate description.

[Blackened300a]

Kinda sounds likecthe main wiring harness on the driver side. Between rear of cam cover and firewall. There is a brace at the wiper cowl that is pretty sharp in there.....
Good luck.

+1
For everything to go berzerk like that, you would need a main wire to ground out.

[ctrlraven]

Has your car been driven pretty often as of late? Could of been a small critter that decided to snack on some wires.

[Stangracer89]

Thanks for all the suggestions. It had 11 codes mostly in the 744 to 760 range. I will need to look in my book again. I have had to drive it all winter so I kinda doubt the critter thing, although stranger things have happened. Nice day today so I will start searching the main harness by the wiper tonight. That sounds like a logical place to start. Also, the O2's are not working and the plugs are now fouled due to all the raw fuel and it sounds like I am only running on 3 cyl. So depressing. Thanks again guys. Happy Motoring!

[justbob]

+1
For everything to go berzerk like that, you would need a main wire to ground out.
Or a ground to "unground out"...

[scruff]

Kinda sounds likecthe main wiring harness on the driver side. Between rear of cam cover and firewall. There is a brace at the wiper cowl that is pretty sharp in there.....
Good luck.

i would bet money on this being your problem as this is excately what happened to mine OD flashing problem i found a few chafed wires in this locations from rubbing repaired them and no more problem

[Adam12]

check that wiring harness, but also check the alternator if the diode is bad you could be getting a back feed of power to the ecm causing your issue. check for water ingress in the trans harness

[Stangracer89]

OK, Who do I write the check to? The main wiring hub mounted under the brake booster fell off of the mount and dropped onto the steering shaft. Broke an Orange/white wire. 2 minutes to find, 10 minutes to fix. possibly saving me hundreds of dollars! Thank you guys for all your help. I owe each of you a cold one at the next Marauderville.

[Dragcity]

Soooooo excellent it was a cheap and easy fix. Nice job!

[Dragcity]

.................

[Blackened300a]

I owe each of you a cold one at the next Marauderville.

Keep in mind that you will be held to this. :D