Truck dies when it hits a Bump!

[powerstrokes only]

My sister called me and told me her 2002 7.3 has been dying when she hits a bump on the road, but always restarts. Sounds to me like loose wiring harness under the valve covers to the injectors or something similar. Anybody else have any ideas???

[ianstew]

I'd say loose wiring. Check your idm and pcm plugs. That's where I'd start

[POWERED SPARKLESS]

Are the big bumps or little bumps? Kind of like huge speed bumps?

The stiff setup in the these turck can shack the crap out of everything.

[20stroker02]

While the truck is idling slap the underside of the driverside front wheelwell, if it dies or stutters then it is most likely a wire connector. Check all the connections even if they look good. My did the same thing and I moved wires around and checked all the connections and since then it has not done it since.

[POWERED SPARKLESS]

I saw a post about all the wire harness problems with the 7.3, I think I still have it.

[POWERED SPARKLESS]

Sorry only thing I had was on 6.0 and mostly E-modles.

Maybe if you wisper to the right person they might be able to help.

[powerstrokes only]

Thanks for all great feed back!! I'll pass it all on to her (I am in Arizona and she is in New Mexico). Thanks again!

[2Fat]

I was really hoping to find a cure here for this "bump-n-die" thing, It has been happenening to me off and on for awhile now. I did the CPS recalls and checked my "BANKS" Chip, everything always seems to be on the up and up.

Is there an Inertia Switch on and F-250 (2001)? could this possibly be an option?

[joeydover]

Gas models had a bad problem with ignition switch in the column. start it and hit the bottom of the steering column pretty hard just under the key. if it dies the connector on the ignition switch has probably come loose. the pot metal tabs sometimes bend. really bad problem on older f-150 & mustangs. will cause stumble or shut off every hard bump. hope it helps.