Greetings:

I have an 89 that had some extra a/m stereo, ungo box and radar detector wiring that I gingerly removed. I have also taken out the heater box. However, I did keep the portion (wires) of the heaterbox harness that connects to the DME. I cant hear the fuel pump prime up and the car cranks but doesn't fire. The only thing I can think of is that some form of wire tapping was done with regards to the alarm to disable the car in the event of theft. I found a little momentary push button on the g/box. I don't know if it was a panic button or a on/off button of some sort. I pulled connections that were tapped into the obc controller located in the front left speaker hole. I need this thing to fire up today. Any help would be greatly appreciated.

Cheers,
Ricky

My suggestion...ask the previous owner.

Thanks for the suggestion. There is no "PO" per se and this work was done profesionally probably 8-10 year ago God knows by whom.

The PO doesn't know how the cars kill switch is enabled/disengaged?

Then honestly if it needs to move readliy it sounds like it's time for a call to AAA. It could be one of the referance sensors in the bell housing or the DME.

Have you check to see if you get Spark? Fuel and so on? I assume so. My car has an old 80's kill system wired into it as well, works right now but every so often I hit a bump and it cuts out. It needs to be removed along with the wiring nightmare they added.

I can say I feel for you trying to pick thru some old defunct kill box but most were simple remove power to box and car works normal.

I removed all the alarm components. I believe it has something to do with the ground wire that comes from the DME. I have no fuel pump power when activating the key. You're right about the nightmare of defunct wiring. I'll keep tracing wires to see what I come up with. The reason it need to move is that its going to the bodyshop tomorrow to address some corrosion issues. Thanks, and I'll keep listening for suggestions.

Cheers,
Ricky

Double check all the wiring that was related to the Ungo box. My dad had the Ungo in his 930 and was a real pain in the ass!! Good luck!

I think there is a fuse in the OBC that cuts out fuel if the code isn't entered correctly. The engine will crank forever but will never fire. You might want to check how the alarm dealt with that feature. Just my 2 cents.

Excuse me if im wrong.

check the fuse is all i can say for the pump. otherwsie ur gonna have to go through all the extra wiring and see what was messed up. tyhe m3 i just bought is in similar shape. the owners kid was messing with the fuse box to wire a V1. sometimes it will jsut crank. otehr times i can getit to turn on. than again the fuel pump he did say was going out so he gave me a new replacement. one of these days ill get around to installing it.

Thanks guys. The way I see it, an alarm interrupts a circuit that disables either ignition or fuel. Since I have taken out all alarm related components and wiring, all circuits should return to normal, right. The OBC code could be the challenge. I connected it back into the "harness" and it still doesn't want to fire up. The fuel pump is not priming/starting upon turning the key. I did check fuses and relays. All's well there. I'm starting to sway in the direction of the OBC code being the culprit. Is there a way to reset this thing back to "0"? Keep the ideas coming please...

Cheers,
Ricky

Still open to suggestions and/or house calls. I am in the Hatboro/Horsham area.

Cheers,
Ricky

if your positve its the fuel system, did u chk the relay behind the coolant tank resevoir? Thats the relay to the fuel pump. I believe its the one in the middle that is usually orange.

Guys:

Thanks to everyone for their replies and suggestions. All relays, fuses, connections were OK. I guess the way they installed this alarm was by cutting one of the green power wires that comes from the fuse box, attached old school speaker wire and hooked this to the alarm. I removed this connection but did not pay much attention to reconnecting the wires back together. I went back and traced my steps, reviewed all the removed harnesses and found this splice was made. I reconnected and it fired right up. Lesson is that an alarm's basic function is to interrupt a circuit creating a "no start" condition. When removing an alarm system, pay attention to all the wires it was connected to. Now I can go on with the project which by the way is an 89 that is a track only car with full interior. I am removing carpet, tar, heater box, misc brackets and studs, a/c, heat, sunroof, sunroof cassette, etc. So far I have taken out 450 lbs of stuff. Starting weight was 2737 and I am at 2288. Granted, about 150-180 lbs are going back in but that's one hell of a diet.

Cheers,
Ricky

good call, glad you found out the problem. Are you going to be selling your interior parts?
if so, what color is your carpet?

I don't own the car, I am doing this for a friend. I don't think the carper is going back in. It's gray and it came out as one piece. I'll as him if he wants to sell it. I can tell you right now, shipping is going to be nuts because that thing is heavy and big.

Cheers,
Ricky

can u tell me what interior parts you took out that he will be interested in selling. im local so shipping is unnecessary.

I will find out what parts he's going to want to sell and list them.