mazdaverx713b

iTrader: (91)

on my 82 GSL, whenever i switch on my wipers or when they are in the first intermittent setting and the wipes move, i hear a small "pop" through the speakers. what could cause this? a bad amp?

Sgt.Stinkfist

iTrader: (6)

Is this a recent problem or has it been happening since you've owned the car? my guess is a bad ground somewhere.

mazdaverx713b

iTrader: (91)

i've owned the car for two months and i've been driving it for a week and its been doing it this week.

trochoid

iTrader: (6)

I'm going with the ground idea also, especially if it clicks through the radio when the wiper motor turns on/off. If the noiseis constant while the motor is running, then the motor is bleeding electricity and may be on it's way out. You might also be missing or have a bad condensor somewhere.

mazdaverx713b

iTrader: (91)

the noise only happens when i switch the wipers on or when in the intermittent setting 1, and the wipers engage, then i hear a quick pop through the speakers. what ground(s) should i be looking for at this point? would it be best just to go through and clean the grounds on the LF strut tower, the one on the firewall, and the one at the bellhousing? or is there or are there specific grounding points to look at when dealing with the stereo or wiper switch wiring?

Sgt.Stinkfist

iTrader: (6)

honestly any ground could be the cause, and its goin to be fun finding it. go ahead and clean the grounds you mentioned (it never hurts), but your best bet is to get a FSM or atleast the wiring diagram part(can be downloaded for free via here, just search) and start tracing the wires for the stereo and wiper motors and you'll probably come across some cracked or corroded wires. good hunting

mazdaverx713b

iTrader: (91)

well, i've got the FSM and ive gone trough most of the diagrams at one point. should be some refamiliarization and a couple of hours to go through it.