1996 Ford F-150 Questions

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just replaced harmonic balancer to 1996 f150 4.9L ,vibration is less but still there when rpm comes down from being revved up could I have bought a bad balancer from advanced auto ??????
92 ford F 150 5.0 .The reason I replaced the computer was because I found two tracking devices on it.
Turn climate control to heat blowing cold air
only get up to 2000 rpm with it floored and in park and engine want stay running what are some suggestions did a smog test and no visible vac leak at intake.
almost on the floor. What can I do?
Driving push gas it goes then its like your in neutral push gas no acceleration then it goes back to like in drive. Only have 60,000 miles
where is it located? changed the left, and now I cant find right
heater is blowing warm air only fluids are good temp gauge good switch working ok. wondering to flush hoses 1st or replace thermostat or any ideas would be apprectiated
I've checked about everything that I believe could cause this, with no luck, has new fuel pressure reg., new map sensor, new plugs, plug wires, cap and rotor, both fuel pumps and tanks are new, changed fuel filter. Just can't figure out why codes po172,po175 are always coming back, and the trim is always -25 and never moves, even when I go to the graphics there is no movement or fluxuation and the truck runs good, exhaust seems strong though. Any help would be appreciated, Thank You
Does the motor have to be removed
turned key over to start the truck and heard clicking now will not start.. Battery good. Power to starter but still when I turn the key nothing
Started out going dead but would crank right up. Then I had to switch from rear to front tank and it would fire right up and go dead when I put it into gear but when I switched back to the rear tank it ran fine for a while. Replaced fuel tank and pump. No change. Kept getting worse having to turn it over and over and over before it would crank. Finally died and had towed to mechanic. Replaced distributor and ran fine for about three weeks and started again. Replaced distributor again. Immediately went dead. Then it bucks as if though losing fire. Fuel pressure remains constant when it dies. After it has a bucking fit and I make it home, it cranks and runs fine for about 70 miles and starts bucking. Sometimes I can disconnect the positive cable for a minute then put it back on and it cranks up and runs fine for a while. Things that I have replaced, battery cable ends, fuel tank selector switch, ignition control module, computer, idle air control valve, batter cable ends. Still intermittently and violently bucks and dies. I have the dash board completely torn apart looking for a short in the wiring on the firewall. I would appreciate any suggestions as I the truck has spent more than ten weeks several different shops and I simply cannot get it figured out. I have only managed to get it to act up in front of a mechanic one time who said he was going to run some tests in the morning but again, it cranks right up and drives fine when it is cold so no dice. The truck is not throwing any codes either. Thanks in advance.
Line keeps popping out when I try to pump up my clutch
Line keeps popping out every time I try to pump it up
The idiling starts to vary up and down the warmer it gets but stays running till u shut it off then it we not start till it has complety cooled off.I tried spraying starting fluid in it and it has fire going to the plugs,I'm stumped!
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