94 4.9
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94 4.9
I recently purchased a 94 150 with the 4.9/6. Truck is in pretty good shape, however it seems to be a little low on power, and the mileage is very low. I have replaced the plugs, wires, cap rotor , and fuel filter. No check engine light. where should I look next. I seems to hesitate or stumble sometimes
and stalls when first started, but only when it is warmed up. any Idea's? Thanks Andy
and stalls when first started, but only when it is warmed up. any Idea's? Thanks Andy
Fleet Owner
Joined: Oct 2005
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From: Kentucky
Do not throw any more parts at the problem until you check for codes. There can be stored codes or other issues that would cause the truck to fail the Key On Engine Off tests WITHOUT having a Check Engine Light(CEL).
Warm uo the truck then do this: Fuel Injection Technical Library » How To Run a Self-Test
If your truck is a manual you need to hold the clutch in and IIRC have it in neutral throughout the KOEO tests and CM display.
List the codes, by number, and when they were displayed here.
Warm uo the truck then do this: Fuel Injection Technical Library » How To Run a Self-Test
If your truck is a manual you need to hold the clutch in and IIRC have it in neutral throughout the KOEO tests and CM display.
List the codes, by number, and when they were displayed here.
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OK.I had the computer checked, and no codes at all either in the standing or the running check. Tonight I removed and cleaned the intake air temp sensor. it was really gummed up with carbon. I did the whole thing the right way, and disconnected the battery for a while, then reconnected and drove at different speeds and load to reset the sensor. I'll have to see if this helps. Andy
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