Hemi Question

[Tincup]

First, the car has been running great. I have been enjoying driving it very much, and have been gaining confidence to take it anywhere. That being said, driving home from a cruise night last night, I was on the highway doing about 70 it seamed like the engine shut off for a split second. It happened pretty fast, so I'm not sure what really happened. Has anyone ever had a problem with the motor shutting off? I know, it could be anything, but the last thing I want is to not trust it....:?

 

[5.7 hemi]

I had that happen once, turned out the tank shifted just a tad and the positive off the fuel pump ground out and blew the fuse. That being said, could you have been low on fuel and sucked air for a second?

 

[Hellcat Cuda]

Any time you restore or build a car completely, or make a considerable change like sticking this modern tech in an old car, you'll need to work out any bugs and gain trust in it by making a number of short trips here and there; getting back under the hood to look for loosened bolts, wiring connections, etc. You can venture further away each time as you gain trust that its all good. Even brand new cars need bugs worked out sometimes. Those are called warranty repairs. lol My new Challenger had a solenoid go bad at 700 miles. I fixed that myself because the dealer was not displaying much competance and now the car has 14,000 miles on it...

 

[67Dart273]

Have you "pulled codes?" Don't remember what you are using for fuel control

 

[Tincup]

I had that happen once, turned out the tank shifted just a tad and the positive off the fuel pump ground out and blew the fuse. That being said, could you have been low on fuel and sucked air for a second?

That was one of my first thoughts, not low on fuel ( I had about 1/2 tank) but the connections on the fuel pump, I'll check to see if they are loose.

Any time you restore or build a car completely, or make a considerable change like sticking this modern tech in an old car, you'll need to work out any bugs and gain trust in it by making a number of short trips here and there; getting back under the hood to look for loosened bolts, wiring connections, etc. You can venture further away each time as you gain trust that its all good. Even brand new cars need bugs worked out sometimes. Those are called warranty repairs. lol My new Challenger had a solenoid go bad at 700 miles. I fixed that myself because the dealer was not displaying much competence and now the car has 14,000 miles on it...

That is a weekly occurrence, but your right, I do need to jack it up and poke around...

Have you "pulled codes?" Don't remember what you are using for fuel control

Not yet..

 

[Joe Dokes]

Could be that you have mechanics butt. When you spend an inordinate amount of time crafting something you become so familiar that you notice any tiny abnormality. You could have hit a bump, you could have hit an expansion joint in the road. With your setup I bet you get have really good road feel, this can lead to some false warnings.

The good news is that when know your car this well can prevent catastrophic failures. I once noticed felt / heard bearing failure in a differential before it could totally destroy the rear end.

My guess is that you might have a bad ground that caused a temporary hiccup. At worst it could be a fuel pump failing slowly, or the beginning of a ECM failure. My guess is that it's nothing, but verify your electronics grounds, and plug in your scanner just for some peace of mind.

Enjoy the ride.

Regards,

Joe Dokes