Fuel Problems??? HELP!!
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
make sure your CEL comes on when you turn the key to "run"
Thread Starter
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
Thanks for the link for codes, P1121 is Throttle position sensor inconsistent with Mass air flow sensor, P1443 is EVAP system.
The check engine light is NOT on the codes I got were pending codes. I let the Advance Auto guy talk me out of the fuel filter...... I'll change it, thanks.
The check engine light is NOT on the codes I got were pending codes. I let the Advance Auto guy talk me out of the fuel filter...... I'll change it, thanks.
Elder User
Joined: Apr 2004
Posts: 966
Likes: 1
The fuel filter is cheap and good idea. Particularly if not recently replaced. To remove fuel line connections from filter look for wide area on top part of plastic horse shoe shaped clips. If you push line toward filter while pressing on that wide flat area with small flat screwdriver and pull line toward you it should release. Don't break those clips by attacking them with pliers. They are hard to find short of replacing entire line (pricey). Pull fuel relay or trip reset and run truck till it stalls out to avoid getting a bath/spray in eyes with gas.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
Thanks for the link for codes, P1121 is Throttle position sensor inconsistent with Mass air flow sensor, P1443 is EVAP system.
The check engine light is NOT on the codes I got were pending codes. I let the Advance Auto guy talk me out of the fuel filter...... I'll change it, thanks.
The check engine light is NOT on the codes I got were pending codes. I let the Advance Auto guy talk me out of the fuel filter...... I'll change it, thanks.
The fuel filter is cheap and good idea. Particularly if not recently replaced. To remove fuel line connections from filter look for wide area on top part of plastic horse shoe shaped clips. If you push line toward filter while pressing on that wide flat area with small flat screwdriver and pull line toward you it should release. Don't break those clips by attacking them with pliers. They are hard to find short of replacing entire line (pricey). Pull fuel relay or trip reset and run truck till it stalls out to avoid getting a bath/spray in eyes with gas.
I doubt it is the coilpacks too.......it sounds like you should change the air filter. check the intake for blockage and clean the MAF with crc maf cleaner per instructions. After that you still might need a new MAF....make sure everything on the intake is tight.......your evap should be another issue......look for leak/bad hoses, also there is a valve around the canister that can be cleaned......the evap system is pretty simple...
it is always a good idea to change the fuel filter, especially on an older truck
Senior User
Joined: Jul 2007
Posts: 443
Likes: 0
From: Brandon, MS
I don't know if you've done this already but have you pulled the MAF sensor and cleaned it? Also, the TPS could be going bad; that is what happened to me, when I replaced the TPS, everything went back to normal.
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
Since last post I replaced the fuel filter, two hoses, cleaned MAF sensor and checked all hoses. Air filter is new, haven't done anything with TPS YET. I think I'll drive it to work tomorrow and see what happens. Don't know if I've found the problem yet, but it runs better. Thanks for the help, let you know what happens.
Thread Starter
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
Bidwell that is such a great idea I've just got finished digging in the trash to find the old filter...... don't know why I didn't think of that, anyway it's very HARD to blow through. That's a good thing....not sure that was all of the problem, but I made it to work and back home without spending any time dead on the side of the road, thanks.
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Senior User
Joined: Jul 2007
Posts: 443
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From: Brandon, MS
Bidwell that is such a great idea I've just got finished digging in the trash to find the old filter...... don't know why I didn't think of that, anyway it's very HARD to blow through. That's a good thing....not sure that was all of the problem, but I made it to work and back home without spending any time dead on the side of the road, thanks.
Thread Starter
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
I don't know if I should call this an update or a different problem...... truck has been running great until this morning. I got about two miles from home and it fell dead in the road again. This time I was at the top of a long hill and let the truck coast down the hill in fifth gear, it started three or four times for just a split second then die again. After sitting on the side of the road for about five minutes fired up with a cloud of grey smoke and a strong raw gas smell. Died two or three times before I got home..... any guesses where to start first???
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
I don't know if I should call this an update or a different problem...... truck has been running great until this morning. I got about two miles from home and it fell dead in the road again. This time I was at the top of a long hill and let the truck coast down the hill in fifth gear, it started three or four times for just a split second then die again. After sitting on the side of the road for about five minutes fired up with a cloud of grey smoke and a strong raw gas smell. Died two or three times before I got home..... any guesses where to start first???
Thread Starter
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
The truck is a '96 2.3, I haven't done a pressure test ..... the truck started right up tonight and ran fine, but I didn't let it run that long. I'd taken my daughter to school, went to Lowe's before I left for work, in other words the truck had been running about half an hour before it quit.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,716
Likes: 0
From: Boston, MA
The truck is a '96 2.3, I haven't done a pressure test ..... the truck started right up tonight and ran fine, but I didn't let it run that long. I'd taken my daughter to school, went to Lowe's before I left for work, in other words the truck had been running about half an hour before it quit.