Im trying to replace the ac belt. On a 2011 f150 3.7 v6. ...


Im trying to replace the ac belt. On a 2011 f150 3.7 v6. I cut the belt off and proceeded to slowly angle it in new belt with zip ties. It's just too tight my gut feeling was that it's not right. Than I started the truck then it...

Im trying to replace the ac belt. On a 2011 f150 3.7 v6. I cut the belt off and proceeded to slowly angle it in new belt with zip ties. It's just too tight my gut feeling was that it's not right. Than I started the truck then it stalled. check [engine](/topics-engine-ford/) light came on. also a wrench picture appearredd. Any ideas???


Also I immediately turned off the engine when all the warning lights lit up. Then I just cut off the ac belt. Then I started the engine without the ac belt, but made no difference. the truck stalled and the warning lights still lit. Really really upset. What happened. And why is no tentioner in this model !!??.
Automotive Expert
Hello and thank you for your question. My name is James. I’m sorry to hear about the trouble you’re having with your f-150. I’ll do my best to help. Can you tell me what parts you removed to access the belt?

I removed the filter box with the mass air flow sensor. It was exposed. Once I cleaned it went back to normal. Back to square 1.. which was to replace the wobbling harmonic balancer. And ac belt replacement. Question how do you adjust the tention on the ac belt because it's way too tight?
Automotive Expert
There is no adjustment for these stretch belts and they do seem awfully tight when installing them. Confirm that they gave you the correct part number to make sure. They are difficult to install.The best way to install is with zip ties by resting the belt on the ac clutch pulley and looping the other end behind the harmonic balancer, pulling the zip ties tight, then turning the crankshaft with a ratchet.

That's what did and it was difficult. So what did yesterday was correct. Now I have to buy another ac belt and do it again. Thank you.
Automotive Expert
the first time I did one at the dealer I assumed something was wrong because it was so tight and difficult. Thank you for using Just Answer

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