Randall.K

iTrader: (6)

After a bit of searching, I was not successful in locating information to assist with this.

Symptoms: Intermittent inability to start vehicle or loss of engine on the road followed by temporary inability to restart. The starter turns the motor and fuel delivery still works which makes the ignition system a suspect. The problem seems to occur primarily when the car has been operating at normal temps (has not yet occurred when cold). After start attempts, placing a hand on the chassis results in an electrical discharge occurring in a few short pulses.

Configuration: The car is equipped with a Haltech PS1000 and ls coils. The coils are located between the brake booster and the fender (away from heat). A haltech harness runs all of the engine goods.

I have looked over the car and nothing seems out of sort. I am looking for suggestions about possible trouble spots that I can direct my attention. I realize that the information is limited, but I am grateful for your suggestions.

ondabirdhouse

iTrader: (26)

...you have a short in your harness. I would check over your entire harness for exposed wiring that is causing it to shock/ground out. I definitely wouldn't drive it if its discharging like that...you could fry your ecu or blow your engine.

Randall.K

iTrader: (6)

Thanks for the suggestion. I'll be the first to admit that I am not well versed in electrical systems and I am looking for suggestions about where I should be focusing my attention. I gave a quick look at the segment of wire between the ignition coils and the ECU and it appears to be in good shape. I'll give it a second, more in depth look over the weekend since I think that the problem most likely resides there.

I wonder if there are any other systems that could prevent the car from getting spark if a short existed in them. For instance, I remember reading elsewhere that the fuel injectors draw power from a blue connector in the body harness under the dash with the OEM ECU.

Based on my understanding of the Haltech system, the ECU is the source of power for the primary engine related components and a conflict situation seems unlikely, but as I suggested before, I am no electrical engineer and I appreciate experienced feedback.