fuel filter issue??

[bamabrian]

ok...this is the second year we have had this rv..it is a 99 tiffin allegro with the 454 chevy. we are camping right now and it was about a 4 hour trip from home to here. about two hours into the drive we slowed for a stop sign and the engine started stuttering and died...started right up and was ok for a while then every few minutes it would lose power and not ever rev over 1000 rpm...if i gave it a few minutes, it would start up and be fine for a few miles....it never really died, just wouldnt move the rv any...do you guys think fuel filter? i had that changed before last season, but of course it was not used over the winter...i have got to figure this out in the next two days before i try to make the trek home...

[jbowman]

i have had the same problem for 2 years no one seems to be able to find i changed the coil packs didn't help so i changed the fuel filter and cleaned the MAF sensor that could be the problem the MAF sensor.I haven't tried mine out yet.

[bamabrian]

i am going to try to change the fuel filter tomorrow....put some octane boost in. i think the general consensus is that there is water or trash in the fuel line somewhere...it starts and runs fine with no load and will run great for a while, i think until the filter gets clogged enough to restrict the flow and kill the power. do you think that even after you changed your fuel filter that you may have had more water/trash in the tank and killed the next fuel filter too? did you drain the tank and start with fresh gas?

[nbounder]

Funny you should ask------my little Ford Ranger did the EXACT same thing. The master diagnostician lady took two days of on & off testing, and guess what they found?? Main ignition feed wire (from coil to distributor) had an intermittant open. Frequently, the spark would occur inside the wire, and there wouldn't be enough spark energy to properly fire the spark plug. Cost me a bunch of bucks, but it runs like a top now!

[RVhauler]

Would check for water in the fuel. ethenol absorbs moisture from the air and can cause a lot of grief. I use a fuel stabilizer in all fuel that will not be used in less than 30 days. (Staybil/etc)

[bamabrian]

ok...the next question is...where is the fuel filter on a 99 tiffin allegro? near the tank on the under rail? i hope thats it and its not the ignition wiring....

[BABrede]

My son had the same problem on his 2000 Dually (454 engine). He chased everything, cats, mufflers, fuel filters, coil packs, ignition module....etc, etc, etc. Ended up being the fuel pump, even though it tested in the good area. He changed that out and it's ran like top since.

Kerry

[bamabrian]

well, i replaced the fuel filter and it really didnt seem backed up....i also put alot of sta-bil in the tank too. i hope it gets us home ok...if it struggles then i am gonna check the fuel pump next and if thats not it then ignition wiring...thanks for all the info!