truck hits 100mph then sordove seems to back fire? any ideas

[atkonkler]

when i hit 100mph it seems to back fire? anyone got any ideas? much appreciated if you have run into this! stock set up just intercooler hoses rerouted and pump hotwired.

Thanks Aaron

 

[Aeroking]

Re: truck hits 100mph then sordove seems to back fire? any ideas

when i hit 100mph it seems to back fire? anyone got any ideas? much appreciated if you have run into this! stock set up just intercooler hoses rerouted and pump hotwired.

Thanks Aaron

Are you 100% throttle at 100mph. The transmission should shift into overdrive at 100mph, but alot of them do not. They run up to 100mph and never shift, unless you let off the throttle. :2cents:

 

[dgoodhue]

Re: truck hits 100mph then sordove seems to back fire? any ideas

Your hitting the rev limiter if you have the stock chip Many of these truck will not do the 3-4 wot shift if left in OD (i know none of mine have) Try wot in D and shifting OD at about 4500-4600 rpm(98/99mph)

 

[WhiteTY]

Another thing it might be is your plugs. I know when I bought my truck a few months back it had bad plugs in it and it would pull hard to 95 or so and then sputter like I was on the limiter but I knew I wasn't. When I put a fresh set in it fixed all of my problems. That is something fairly cheap to check if the previous idea does not work.

 

[0-60N4]

Re: truck hits 100mph then sordove seems to back fire? any ideas

Along with the plugs, change the fuel filter. Could be going lean on you.

 

[atkonkler]

Re: truck hits 100mph then sordove seems to back fire? any ideas

Yeah i got a set of plugs for it last summer but havent got around to doing them. im gonna do a fuel filter also i talked to a guy at a p=shop who said try that too. thansk for the idea and i knwo that these trucks eat plugs every 12,000 or less!