surpentine belt jumping
12-26-2012, 07:35 PM
#1
Thread Starter
Join Date: Dec 2012
Location: LA
Posts: 4
surpentine belt jumping
I have a 4.6 with 88000 miles that was squealing under the hood. I pulled the tension off the belt and found a little movement back and forth on the alternator, nothing on the other idlers and pulleys. I replaced the alternator and still had the squeal. I replaced the belt and the squeal stopped. Now when I rev the engine up, the belt jumps one notch on the crank pulley. I just replaced the tensioner/pulley and it still jumps. I had no problems with this until I replace the alternator. The belt does not jump at idle. Any ideas?
12-26-2012, 10:27 PM
#6
Join Date: Dec 2012
Location: Iowa
Posts: 3
I am new to your forum! Love it! I have a 2008 V6 Mustang of course, and have a problem you guy"s or gals can help me with, I live in Iowa, my car sat for a weak due to snow storm it had a weak battery. I replaced with brand new one, driving down the street my car started to stutter and miss, no power at gas pedal it stalled! Not sure what to go from here! I have some talent working on cars but havn"t worked on them lately. I can be hands on if needed, I have had my car for 3yrs no problems. Any Advice please!!!
12-28-2012, 05:34 PM
#10
5th Gear Member
Join Date: Jun 2006
Location: NY
Posts: 2,307
When it jumps the crank pulley the belt will get damaged by the flange on the crank & it will jump again. Change the belt again.
Make sure you have the correct belt. The parts store almost gave me a 5 rib instead of 6 rib replacement.
Mine jumped from oil getting on belt from leaking SC seal.
Make sure you have the correct belt. The parts store almost gave me a 5 rib instead of 6 rib replacement.
Mine jumped from oil getting on belt from leaking SC seal.