Hi Everyone,
Just writing back to let you know that I finally fixed the problem by replacing the Pioneer head unit. I put a JVC in and it?s all set now. The Pioneer must have been hosed. Now it sounds awesome, with no noise at all. Thanks to all for your suggestions and help along the way.
"MD99" wrote: > Figured I'd post to see if anyone has any suggestions other > than what I've tried already. Installed a new stereo system > in 2000 corolla. New Pioneer head unit, component blaupunkts > in the front, polk audio speakers in the rear, profile amp > driving the four speakers, another profile amp driving a Dual > subwoofer box with 2 12" subs. Am getting engine noise > (whine, gets louder and faster as engine accelerates). I have > regrounded my amps to the chassis with a very tight connection > and 12 guage ground wire, scraped all paint away to bare metal > - have tried different ground points. Put in new battery with > 2 guage ground strap, scraped to bare metal ground point - > head unit is grounded to chassis same as battery point, but > have tried different points. Have upgraded to top-grade > twisted pair, oxygen free 12 gauge speaker wire, rerouted > speaker wire up through top of doors in panels, no other > cabling is near, upgraded signal (RCA) cables to top-grade > rockford-fosgate braided cables for optimum noise rejection, > also routed up through top of door panels away from any other > cabling - power cable to amps runs down through center of car > underneath carpet - have tried running power to amps directly > from an outside battery - no difference, have run power to > head unit directly from battery bypassing wiring through > firewall - no difference. My next step is to replace the > spark plugs and possibly the alternator itself. Any thoughts? > Suggestions? Thanks