my 1994 ford f-150 has no pep and burns allot of gas, is this a sensor issue? if so which one?
Asked by DIY May 31, 2015 at 09:21 PM about the 1994 Ford F-150 XLT LB
Question type: Maintenance & Repair
the truck doesn't take off no matter how much you hit the gas, once you get going it cruises good. It also seems to burn too much gas. its a 94 F150 xlt with a rebuilt motor and new tranny. 2 wheel drive.
6 Answers
No check engine light (it does work), I was having issues with the overdrive but the tranny place corrected that and overdrive does work. It does shift but sometimes I feel it takes longer to shift gears. I will try manual shifting the gears tomorrow morning to see if that does anything. I purchased an 0-2 sensor on ebay and will try to change that when it arrives. The truck has 135,000 miles on it. The engine was rebuilt at 99,000 miles. The tranny was rebuilt at about 120,000 miles.
Sounds a lot like what my daughter's 99 with a 4.0 pushrod engine was doing. Turned out to be a tuneup issue. Check the resistance on your spark plug wires before replacing. Use Motorcraft plugs and wires if necessary.
before the engine was rebuilt it was sluggish and i had no compression in one cylinder. I was told it was a cracked valve. So I decided to rebuild the motor. Now its not as bad as it was but still not right for a 5.0 motor. no balls at all. sometimes it feels like its struggling to get up to speed but once i'm going over 50 mph it seems better. Also when I first start it cold it wants to die or stall for about 5 seconds then rev's right back up. very odd.
I put a super duty clutch fan in it and it sounds like its pushing heavy air like a wind tunnel. TrannyMan's got me thinking....I changed the radiator and added in the heavy clutch fan, could that be doing anything negative? Also the heat in the truck never gets hot in the winter and someone told me it was air locked in the radiator but flushed it through a few times. I'm starting to think the superduty clutch for the fan might be a part of my issues?.
You got a vacuum leak try hearing for a hiss when the truck is running check around the vacuum can yeah I'm kind of looks like an old coffee can also your air induct little plastic piece before the mass air flow sensor take that thing off and with a 5.0 the pc valve could be throwing too much oil into the throttle body I would consider cleaning it and replacing the PVC valve after you get done putting it all back together take off the negative on your battery and place it on top of the positive on the battery with positive terminal connected it will reset your throttle body settings and then take it for a drive
It looks like an old-time coffee can. My bad and clean the throttle body not the PVC valve
