Somebody Please!
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Posting Guru
Joined: May 2001
Posts: 1,021
Likes: 1
From: Florida
Somebody Please!
So here's the deal, my truck lacks power on the low and, and sometimes sputters if I don't feather the clutch when it is warm. When it's cold outside, or the truck has only been running for a minute or two, the truck runs fine. In the past I have gotten rich codes. For now there are no codes. Here's the list of stuff I've replaced:
Catalytic converter
Plugs(several times)
Wires
Coil packs
fuel filter (several times)
Fuel pump
Coolant Temp sensor
O2 sensor
Intake Air temp sensor: but the new one caused a code after two months, so I put the old one back on. Kinda weird, wonder if that means anything.
Supposedly mechanic checked the fuel pressure and it was fine.
I've also checked and cleaned most or all of the grounds I could find.
Air filter is clean
MAF reads correct voltage: .9V at idle
TPS also appears to read correctly.
I've also replaced all the intake gaskets, and have checked for vacuum leaks with starter fluid, cannot find any.
PCV valve is new.
New 195 degree thermostat.
exhaust manifold gasket
Reset the computer also after each replacement part.
Each replacement seems to make the truck run better, and when the outside temp is below 60 the truck runs fine (even with AC on). It also runs mostly fine without the AC on. It's just bugging me that the truck won't accelerate without feathering the clutch from a dead stop in temps over 70.
Is there a way to test the fuel injectors?
i'm about ready to drive it off a bridge, i've put so much time and effort in solving this, and thought i was on the right track so many times.
The only other known issue I have is an aparent exhaust leak somewhere, or at the very least a bad muffler because it's very raspy.
Catalytic converter
Plugs(several times)
Wires
Coil packs
fuel filter (several times)
Fuel pump
Coolant Temp sensor
O2 sensor
Intake Air temp sensor: but the new one caused a code after two months, so I put the old one back on. Kinda weird, wonder if that means anything.
Supposedly mechanic checked the fuel pressure and it was fine.
I've also checked and cleaned most or all of the grounds I could find.
Air filter is clean
MAF reads correct voltage: .9V at idle
TPS also appears to read correctly.
I've also replaced all the intake gaskets, and have checked for vacuum leaks with starter fluid, cannot find any.
PCV valve is new.
New 195 degree thermostat.
exhaust manifold gasket
Reset the computer also after each replacement part.
Each replacement seems to make the truck run better, and when the outside temp is below 60 the truck runs fine (even with AC on). It also runs mostly fine without the AC on. It's just bugging me that the truck won't accelerate without feathering the clutch from a dead stop in temps over 70.
Is there a way to test the fuel injectors?
i'm about ready to drive it off a bridge, i've put so much time and effort in solving this, and thought i was on the right track so many times.
The only other known issue I have is an aparent exhaust leak somewhere, or at the very least a bad muffler because it's very raspy.
Thread Starter
|
Posting Guru
Joined: May 2001
Posts: 1,021
Likes: 1
From: Florida
Although the MAF readings were within spec, I decided to replace it with a junk yard one. Instantly better! It pings when towing now, so I know that it definately trimmed the fuel. I will check my mileage on the next tank to see if that changes. Thanks for the help guys!
