Stalling Fuel problem?
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New User
Joined: Jul 2003
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Stalling Fuel problem?
Ok. my truck and I have problems
first of all
96 2wd I6 dual tank
Here is the problem. I was driving down the highway and the enginge didn't stall but it lacked any power when i pushed on the gas. Eventually it did it at all speeds and it got to the point where I couldn't move it from a stopped position.
So I switched the to the other gas tank. The truck was running as well as it did when i bought it. Life was good again.
Then the same thing started to happen. I stwitched the fuel filter and it seemed to be running fine. I even switched it back to the front tank and it idled in park fine. Thinking this fixed the problem i was happy.
Now on my daily commute to the naval base when i have to come to a stop soft or hard it stalls. If i catch it before it stalls i can push in the clutch and rev it and save it before stalling.
When starting out it sounds like it's trying to pass a bowling ball thru a small hose. Like it's not getting enough gas. Or at any speed for that matter. I feels like i'm pulling a 18 wheeler behind me.
this is my truck and I right now.
first of all
96 2wd I6 dual tank
Here is the problem. I was driving down the highway and the enginge didn't stall but it lacked any power when i pushed on the gas. Eventually it did it at all speeds and it got to the point where I couldn't move it from a stopped position.
So I switched the to the other gas tank. The truck was running as well as it did when i bought it. Life was good again.
Then the same thing started to happen. I stwitched the fuel filter and it seemed to be running fine. I even switched it back to the front tank and it idled in park fine. Thinking this fixed the problem i was happy.
Now on my daily commute to the naval base when i have to come to a stop soft or hard it stalls. If i catch it before it stalls i can push in the clutch and rev it and save it before stalling.
When starting out it sounds like it's trying to pass a bowling ball thru a small hose. Like it's not getting enough gas. Or at any speed for that matter. I feels like i'm pulling a 18 wheeler behind me.
this is my truck and I right now.
Senior User
Joined: May 2003
Posts: 203
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From: San Diego
Stalling Fuel problem?
Have you pulled the codes yet? Your pcm will probably tell you what the problem is.
You might also check the fuel pressure. A Chilton or Haynes will tell you how. Don't go poking around the fuel system without guidance as it is about 40 psi, and could be as high as 85 psi if the fuel pressure regulator is bad.
Regards, Robert.
You might also check the fuel pressure. A Chilton or Haynes will tell you how. Don't go poking around the fuel system without guidance as it is about 40 psi, and could be as high as 85 psi if the fuel pressure regulator is bad.
Regards, Robert.
Senior User
Joined: May 2003
Posts: 203
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From: San Diego
Stalling Fuel problem?
Oops! Just read another post that says there is no pressure regulator! Just another reason to get a book and read all about it. The pressure must set by engine load.
Regards, Robert.
Regards, Robert.
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Stalling Fuel problem?
Just pulled the codes
P0411
Secondary Air Injection system is incoorect for the current engine operating conditions.
What seperates the the Primary and Secondary. Where should I be looking here? The guy at Autozone where i got the code pulled said that it could be a leaky hose. A little help on which hose I could be looking at. I'm not a rocket scientist when it comes to vehicles, but I hate paying someone for something i can fix myself.
Thanks for you help.
P0411
Secondary Air Injection system is incoorect for the current engine operating conditions.
What seperates the the Primary and Secondary. Where should I be looking here? The guy at Autozone where i got the code pulled said that it could be a leaky hose. A little help on which hose I could be looking at. I'm not a rocket scientist when it comes to vehicles, but I hate paying someone for something i can fix myself.
Thanks for you help.
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New User
Joined: Jul 2003
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Stalling Fuel problem?
looking at the haynes it would lead me to believe that the problem i'm having would be in the air thermactor system.
Looking at the system i see no problems with the hoses. This would lead me to believe that it would be the thermacator it self. I might be way out in left field here.
Looking at the system i see no problems with the hoses. This would lead me to believe that it would be the thermacator it self. I might be way out in left field here.
Senior User
Joined: May 2003
Posts: 203
Likes: 0
From: San Diego
Stalling Fuel problem?
Oh crap! There IS a fuel pressure regulator! Just no sensor for it. Now you can see why it is so important to get a manual and read about it carefully yourself.
P0411? Is your truck OBDII? I didn't think the systems changed until '97, but you could have an early OBDII. What code reader did you use?
Regards, Robert.
P0411? Is your truck OBDII? I didn't think the systems changed until '97, but you could have an early OBDII. What code reader did you use?
Regards, Robert.
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Senior User
Joined: May 2003
Posts: 203
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From: San Diego
Stalling Fuel problem?
Your "thermactor" is the catalytic converter (thermal reactor). Your truck is way too new to have problems with that. How many miles are on your truck?
Regards, Robert.
Regards, Robert.
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Thread Starter
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Stalling Fuel problem?
fuel pressure regulator, that sounds like something that would be causing my problem. Not enough fuel getting to it. But here is one question. Why would it be doing it worse for the front tank?
There is a couple little conecting boots that are a little rough looking. I didn't detect any leaks coming from them. I traced the vacuum lines out using the Diagram under the hood. Got really confused but i think i see how it all works together. Now i have to clean all the grease and dirt off th key board before the woman gets home!
Thanks again for you help
There is a couple little conecting boots that are a little rough looking. I didn't detect any leaks coming from them. I traced the vacuum lines out using the Diagram under the hood. Got really confused but i think i see how it all works together. Now i have to clean all the grease and dirt off th key board before the woman gets home!
Thanks again for you help
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Stalling Fuel problem?
Robert
All '96 under 8500 lb GVWR are OBD-II and MAF. All EFI have a mechanical FPR.
brent
Look for the "BPV" (bypass valve) on the vacuum map - it's a large black plastic blob near the front R corner of the engine with 2 small colored hard vacuum lines and 3-4 large (heater-hose sized) black rubber hoses. That's where the smog pump air is directed to either the exhaust ports, the cats, or vented.
There are only 2 ways for the computer to identify a problem with the secondary air injection:
1) the oxygen sensors (HEGOs) report some condition and the computer deduces it; or
2) the vacuum solenoid valve that controls the diverter valve has an electrical fault.
All '96 under 8500 lb GVWR are OBD-II and MAF. All EFI have a mechanical FPR.
brent
Look for the "BPV" (bypass valve) on the vacuum map - it's a large black plastic blob near the front R corner of the engine with 2 small colored hard vacuum lines and 3-4 large (heater-hose sized) black rubber hoses. That's where the smog pump air is directed to either the exhaust ports, the cats, or vented.
There are only 2 ways for the computer to identify a problem with the secondary air injection:
1) the oxygen sensors (HEGOs) report some condition and the computer deduces it; or
2) the vacuum solenoid valve that controls the diverter valve has an electrical fault.