So frustrated with electrical gremlins

[Jivepepper]

Please help me I have tried everything. I have been having problems since early summer.

My car has weird symptoms. Right now the main one is it's missing/breaking up at wot starting around 3500 rpm. It sounds like its popping and backfiring a little as it does this.

Sometimes It has has a hard time accelerating under part throttle when it does it sounds like it's bogging down.

Then sometimes it just completely dies when at wot and won't start again until I cycle the key off then back on.

The only codes I get is for several coil pack failures.

This what I have replaced.

all 8 coil packs
fuel pumps
alternator
battery
spark plugs
fuel filter
tried different maf
repaired connector at crank sensor because of bare wire.

I'm tempted to replace the chip with a tuner. I think it could be computer related. Plus I could data log.

[Sonic03snake]

Have you tried adding an extra ground to the motor? Alot of times gremlins like these could be a result of a bad ground.

[Jivepepper]

Have you tried adding an extra ground to the motor? Alot of times gremlins like these could be a result of a bad ground.


I do have one extra from the battery negative to the motor and new one from the chassis to the motor. Plus where ever the stock ground terminal goes.

[Sonic03snake]

Oh well, it was worth a shot.

[Jivepepper]

Oh well, it was worth a shot.

I plan on looking at it again just to make sure because it makes since.

[Viper_ed]

Fuel Rail Pressure Sensor?

[Jivepepper]

Fuel Rail Pressure Sensor?

I have an extra and I switched about a month ago but the breaking up part didn't happen until recently. So I might switch it back.