Sounds like your heater could be putting A strain on your alternator. Have it running put the heat on & see if the noise is coming from the heater motor or the alternator. This could be as simple as A belt, but your first step would be to find out where the noise is coming from. If you have under drive pulleys your alternator may not be spinning fast enough @ idle to support the extra current draw from the fan motor. Does your car surge @ idle (RPM's up & down) this could also be the problem. Just A few things to ck good luck.
Idle issue with heat on
96 mustang gt 5speed. Sometimes when sitting at idle with the heat on the rpm's will drop and power supply seems to drop and there's a rattleing that sounds like a rattle you get from clutch chatter. Don't know what it is?
1 - 1 of 3 Posts
1 - 1 of 3 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Ford Mustang Forum
A forum community dedicated to Ford Mustang owners and enthusiasts. Come join the discussion about performance, builds, modifications, reviews, engine swaps, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
Recommended Communities
