Car died on me today Ideas?

[Merlin]

Well as I got out of work to day I started up my Formula which started to run alittle ruffer than normal. Not to a extream but just alittle out of wack. Well as I drive for about a min as I'm about to turn from this little street behind my work onto 8 mile near 275 in northville my car just quits. Engine just shuts off no check engine light, no security light, nothing just boom off it goes. Gauges and every thing still works radio every thing just car just will not run.

I got it into a parking lot started to check things over fuse #11 under the hood the Ignition fuse is poped so I replace it start to drive again boom less than a min later it poped again. I got my dad to come out with the car trailer and getting up into it. It poped out 2 more times ideas any one. I'm just trying to think of wear to start looking what does this fuse controll?

[SSTODD]

LT1 optispark? just a guess but a terrible LT1 problem.

[b.lee]

Do you have an aftermarket stereo?
Maybe the ignition wire that triggers the radio to come on is touching something.

If someone didn't cover or connect the wires properly when installing an aftermarket radio, this could be happening, and maybe popping the ignition fuse under the hood

Just a guess

[meissen]

I would start checking to see what wires are getting melted by the long tube headers. That or it could be your ICM is going bad. More than likely though you have a wire in the engine bay that's grounding out.

The #11 ignition fuse feeds the ICM, crank position sensor, and the coil.

[MP81]

Yeah, at first I was thinking Opti, until you mentioned it was blowing fuses.

I'd start looking for a short or bad ground.

[Merlin]

Cool Thanks for the info guys. I starting to look around the headers for a crispy critter of a wire I have not seen any yet. I'm begining to think its the ICM tho I had it running today for like 4 hrs nothing backed it out of my friends bay put it in drive to drive away POP out it goes. replaced it. Ran it for another 3 hrs drove it around all over the place just fine. After the drive I have not been able to make it repeat the same short and pop another fuse.

[Merlin]

LT1 optispark? just a guess but a terrible LT1 problem.

I don't know I don't think it would be the opti. When it runs it runs kick @$$ but just randomly seems to be poping this 10amp fuse which goes to the coil, ICM, the opti, and seeing my car has Traction control I was told that it goes to some type of switch for it as well.

[98blackbeauty]

Checked the wiring diagram, the Ignition fuse #13 10 amp goes to 4 places.
1. the PCM.
2. Evap can vac switch.
3. evap purge valve.
4. Goes to trans. and internally goes to: a. Control sol.
b. TCC sol. c. 3-2 shift sol. d. 1-2 shift sol.
Since you mentioned it ran several hours, then you put it in gear and it blew fuse, I would start at trans plug on right (Pass side) of trans its a pink wire. trace the cable back and look for chaffing or burn by exhaust/headers. The trans cable is part of the engine harness and PCM.

[meissen]

he said it was ignition fuse #11 not #13.

[98blackbeauty]

whoops fuse 11 goes to
1. crank position sensor.
2. ignition coil.
3. ICU .

[Merlin]

Well I think I finally may have it fixed the car started going through 10amp fuses again like they were candy. So after checking all the wire from the fuse block to there end point all of which were good. I replaced the ICM and found a lose ground strap that went to the motor tightened it up. Started right up no blown fuses for the past 5-6 hours which is alot better than poping one every 5 or so.

I shure hope thats the end of my electrical gremlin.

[MP81]

Awesome! Good work - hopefully that was your problem right there.

[2002Z4CSS]

Pretty rare for the electronic module to blow the fuse. Hopefully it is fixed.