> Yukon Net wrote:
>
>
> Hi everyone, I have the infamous 318 exhaust back-pressure problem.
> After gearing down the noise seems to be getting louder as the truck
> gets older. Has anyone found a way to fix this yet ? Do I need to add
> extra aftermarket 'stuff' to fix this mabey ?
>
What is the infamous 318 exhaust back-pressure problem? Are you
referring to the exhaust backfire/popping that occurs with heavy engine
braking?
One of the guys who used to be on the list has been pursuing this
problem. Here are a couple of emails I got from him recently...
> Yep, it's the controler. My DM says that in an effort to reduce a bucking
> problem in the 97 they changed the controler to provide a little more fuel
> in off throttle situations. This is what causes the backfire. My DM
> immediately offered a free 100,000 mile warranty. Maybe you could get the
> same thing. He also says that they are working on the problem and it might
> be fixed in the 99's. Presumable the same controler would be used to
> eliminate the problem in the 98's. The new V8 won't be in the 99 Dakota's
> but should appear in 2000. The Jeeps will get it first.
> Backfiring is not a normal condition and my greatest concern was for my
> valves and cat conv.
> Talked to the DM this morning. He says they have a new controler that has
> passed all bench testing. They are shipping it out to field test it in my
> truck new week. If it works I'll get a 100k warranty (no charge) and a TSB
> will be issued to allow others the repair. I'll keep you posted as things
> have a way of changing with them.
My 98 with v8 and 5spd also has the backfire problem, although it may
not be as severe as for some. Once it sounds like there is a solid
fix/TSB available, I'm going to get it corrected.
I have been afraid of installing an aftermarket exhaust and then having
it blown off or damaged due to the backfire - sorry buddy, that Gibson
exhaust is not covered under your CC warranty... that'll be another $250
please...
jeff
98 rc v8 5spd 3.55sg flares fipk
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:08:56 EDT