45pro

I bought the 2010 f150 4 days ago. Ran and drove great. Yesterday I decided to straight pipe the exhaust. I cut the exhaust off just before the muffler. Drove it around, sounded much beefier. This morning I drive it to work 45 minutes no issues. After work I leave and almost immediately the wrench light comes on. So I stop and turn the truck off, turn it back on and all is well again. About 10 minutes later it comes on again. I pull into the auto store to pick up an elbow and tip to route the exhaust out the side of the truck just in front of the rear tire. When I leave the store I start the truck up and all is well again. I drive home an additional 20 minutes and the wrench light never came back on. Could this be due to me chopping the exhaust? And if so why? Lots of trucks around here run straight pipes with no issues. Of not what could be causing it? Manual says something about electronic throttle issue?? Please help, I need to get this figured out asap. Thanks!

KRIEGHOFF

Just wondering why you would do that???

45pro

Stock exhaust is way too quiet and most trucks around here run straight pipes and/or stacks. Didn't think it would be a big deal. I'm just not sure if it's related or not. People at the auto store didn't seem to think so but I'm really not sure.

05stram

did they not have a OBDII code reader to tell you what was going on? That is the most accurate and sure way to find out what the issue is

45pro

No check engine light. Only wrench light. Would it still have codes to read?

45pro

Wrench light is currently off, showing no signs of issues.

BlackKnight81

I would still get a quick read on OBD 11 somethings fishy !!!

45pro

Will do tomorrow. Will codes show up even with the light currently off?

Cowpig

yes ... if the light went on the codes should be stored

45pro

Ok thanks