Help.. Mods / rough running. Coincidence?

[WarrenG]

OK, so Saturday I had a Flowmaster Series 50 installed on my 04' Expy. Seemed ok after that then Sunday I pulled out my Cluster to swap out LED for reg bulbs. Didn't drive after that. This Morning I drove to work (6 miles) thought it seemed a little rough. Didn't think much of it, Then on the way home tonight got really rough (missing?) and the service engine soon light would flash the go out came back on then out again. coincidence it was after I took out my cluster? Also the needles in my cluster are not lighting up now?

 

[macupp]

Hopefully you disconected the battery before any of your mods?!?

 

[WarrenG]

yes, battery was disconnected

 

[01yellerCobra]

I think you have two things. The missing is probably a coincidence. But the lack of light in your gauges is probably from something not plugged in. You'll have to pull the dash and double check your work.

A flashing CEL usually means there's a miss at that time. It should be stored so you can check it.

 

[WarrenG]

Thanks for the replies. The #3 COP went out, getting new plugs installed also. And plan on removing the dash/ cluster again this weekend.

 

[Adieu]

Hey, if you're still on here, do you remember how many LED bulbs you needed to swap your cluster backlighting?