At 3K RPM truck falls flat on its face and farts???

[kragle23]

Long story short...

Last week I hit a large dog, busted up the front of the truck pretty bad. Mostly cosmetic, only other problem was the heat exchanger. Ordered LFP's new one, got it today. NOTE that the truck hasn't moved from since I hit the dog, because the HE was leaking.

Got everything hooked up (Install was a breeze, thanks again Mark), went to take her for a test spin, and any hard acceleration the truck falls flat on it's face and it sounds like it is "farting" out the exhaust. If you ease into it and it gets past 3000 RPM, same thing, no power and exhaust sounds like a** (literally!)

BTW, intercooler resevoir is still churning like it should, proper fluid amount after two around the block trips, etc.

WHAT AM I MISSING??? HELP ME PLEASE!!!

[Alpine]

I dont really know if this is something, I am just guessing. Is'nt there a fuel cut off reset or something under the pasenger kick panel. Maybe try and reset it or something. Maybe the truck isnt getting enough fuel. Never heard of your situation, maybe Terry will chime in.

[Sixpipes]

Fuel filter. Your truck must have crapped in its tank when you hit the dog. Or maybe not, but I would change the fuel filter first. :cool:

[03LightningRocks]

I dont really know if this is something, I am just guessing. Is'nt there a fuel cut off reset or something under the pasenger kick panel. Maybe try and reset it or something. Maybe the truck isnt getting enough fuel. Never heard of your situation, maybe Terry will chime in.

The fuel cut off will cut fuel entirely. It can't be that. I would go fuel filter also. It's easy and cheap.


Rocks

[kragle23]

Okay, not the fuel filter or condensation in the tank.

Truck runs like crap, but idles and revs to the moon in neutral and is fine. If you put any load over half throttle, it goes to ****...

HELP

[kragle23]

BTW, the truck is a '99 with the following mods:

JDM CAI
4lb pulley
90mm MAF
NGK-TR6's gapped at .036
Predator tuned by RWTD
Magnaflow catback
Monster Box
FTVB
2800 stall billet converter
Nitto DR

[03LightningRocks]

BTW, the truck is a '99 with the following mods:

JDM CAI
4lb pulley
90mm MAF
NGK-TR6's gapped at .036
Predator tuned by RWTD
Magnaflow catback
Monster Box
FTVB
2800 stall billet converter
Nitto DRMy friends regular F150 was doing the same thing. It turned out to be an adjustment on the throttle body positon sensor. There is a way to check this via voltage, and then adjust it.

Someone else can chime in with instructions on how to do this.



Rocks


P.S. Also check your IAT sensor. Clean it with a quetip(sp) if it has oil on it. This will happen if your putting oil on the filter that came with that CAI, JDM recommends NO OIL on filter.

[dboat]

P.S. Also check your IAT sensor. Clean it with a quetip(sp) if it has oil on it. This will happen if your putting oil on the filter that came with that CAI, JDM recommends NO OIL on filter.
Rocks,
Not trying to hijack this thread, but is this the case? the purpose for the oil is to capture the small particles, etc. Or is this because there are too many folks out there soaking their filters in oil when they clean them?
Any idea?
Dana

[Silver_2000]

Rocks,
Not trying to hijack this thread, but is this the case? the purpose for the oil is to capture the small particles, etc. Or is this because there are too many folks out there soaking their filters in oil when they clean them?
Any idea?
Dana
The oil is there to catch the fine particles... If you are going to run the filter with no oil - you may as well run no filter - save money and just strech a sock over the end of the intake tube....

The NO oil theory is to avoid the problems people have in following the directions to NOT OVER OIL the filter.

I have 2 S&B filters for Sals OLD school PSPS air filter kit - The filters go in and out easy - clean one while running the other - That wy its easy to follow the directions of letting the filter air dry over night and oiling just a little and letting the oil soak in - then hitting the spots you missed...

Doug

[dboat]

The oil is there to catch the fine particles... If you are going to run the filter with no oil - you may as well run no filter - save money and just strech a sock over the end of the intake tube....

The NO oil theory is to avoid the problems people have in following the directions to NOT OVER OIL the filter.

I have 2 S&B filters for Sals OLD school PSPS air filter kit - The filters go in and out easy - clean one while running the other - That wy its easy to follow the directions of letting the filter air dry over night and oiling just a little and letting the oil soak in - then hitting the spots you missed...

Doug

:tu:

Never thought about the two filter switch.. just might have to go that route.
Dana

[kragle23]

Rocks,

TPS is at .96, which it has been. I am going to try and adjust it to .99 +/-, but I'm gonna have to drill out the holes on the sensor to adjust it any more. I adjusted it once, from .92 to .96, this was about 6 months ago, so I don't think that could be it...

Thanks, any more ideas???

[03LightningRocks]

Just remember...you hit an obsticle hard enough to damage your truck. All bets on what you did before this point are off. Things can get jared...bumped and moved during the accident or repair phase. Look for issues that may have been impacted;) .The only other thing I can come up with is to check all your vaccuum lines.

On the oil. Doug is right about the reason for recommending no oil. It is because the majority of folks over oil them. The reason the recommendation of no oil is a good one, is due to the fact that a dry filter does not allow enough particles of anything through them to make any difference anyway. Oil will cause more problems than a microscopic particle ever dreamed of. Doug, in your comparison of a sock, If that is a good analogy, then why not just oil the sock and your good to go? Maybe because a sock is not as dense as the pleated filters. Even the stock replacable filter is not oiled...why oil the after market filters?

Also...in slow arse trucks like Doug and Dana drive....there is not enough suction on the filters to matter either way;) .


Rocks:rll:

[Silver_2000]

Just remember...you hit an obsticle hard enough to damage your truck. All bets on what you did before this point are off. Things can get jared...bumped and moved during the accident or repair phase. Look for issues that may have been impacted;) .The only other thing I can come up with is to check all your vaccuum lines.

On the oil. Doug is right about the reason for recommending no oil. It is because the majority of folks over oil them. The reason the recommendation is a good one, is due to the fact that a dry filter does not allow enough particles of anything through them to make any difference anyway. Oil will cause more problems than a microscopic particle ever dreamed of.

Also...in slow arse trucks like Doug and Dana drive....there is not enough suction on the filters to matter either way;) .


Rocks:rll:
Im shocked you would use my dsl modem to take a shot at me..... LOL

Search on k&N and you will find all kinds of articles that suggest that a NEW K&N lets by way too many particles - They end up in your oil If thats true then a K&N with no oil lets in MORE particles of a LARGER size....

My $0.02

Remember rocks I was running low 12's on 4# of boost 30 months ago.....

Dont be a hater cause I know when enough is enough... :rll:

[03LightningRocks]

Just remember...you hit an obsticle hard enough to damage your truck. All bets on what you did before this point are off. Things can get jared...bumped and moved during the accident or repair phase. Look for issues that may have been impacted;) .The only other thing I can come up with is to check all your vaccuum lines.

On the oil. Doug is right about the reason for recommending no oil. It is because the majority of folks over oil them. The reason the recommendation of no oil is a good one, is due to the fact that a dry filter does not allow enough particles of anything through them to make any difference anyway. Oil will cause more problems than a microscopic particle ever dreamed of. Doug, in your comparison of a sock, If that is a good analogy, then why not just oil the sock and your good to go? Maybe because a sock is not as dense as the pleated filters. Even the stock replacable filter is not oiled...why oil the after market filters?

Also...in slow arse trucks like Doug and Dana drive....there is not enough suction on the filters to matter either way;) .


Rocks:rll:

How dare you respond while I am still editing. Here I copied and reposted my post so nobody would miss any of the good stuff.

You should have installed a filter in my modem to censor my posts:rll: before they even go out on the web.

She is working just fine...:D

[Sixpipes]

Okay, not the fuel filter or condensation in the tank.

Truck runs like crap, but idles and revs to the moon in neutral and is fine. If you put any load over half throttle, it goes to ****...

HELPDid you change the filter...or not? I have a 99 and when the filter gets restricted, it does exactly what you are describing under load. :cool:

[dboat]

Also...in slow arse trucks like Doug and Dana drive....there is not enough suction on the filters to matter either way;) .
Rocks:rll:

HEY... wait a minute, I resemble that remark.. but at least its not as slow as a stocker...

Dana

[03LightningRocks]

Did you change the filter...or not? I have a 99 and when the filter get restricted, it does exactly what you are describing under load. :cool:

Anti hijacking squad is on duty........Back on topic. My 1997 F150 did the same thing...only without the farting. It twas da fuel filter in that instance.

[cpeapea]

i do remember some earlier trucks had fuel hose (the hoses would pop off the pumps in the tank) problems. if all else fails you might check that too.

[kragle23]

Thanks guys,

I'll check out all your recommendations today and let you know the status...

Kasey