Ford f150 bucking at steady speed

[zes57]

Hello, My ford f150 will occasionally buck when going up hill at a steady rate of speed. It seems that it may be misfiring too when driving at a steady speed but it doesnt seem to be doing it all the time. I have really bad gas milage and the fuel pressure regulator seems to be making a bunch of noise. How do you test the fuel pressure and could a bad regulator make it buck and/or misfire? :?:

[Harold]

Yes a leaking regulatror can casue misfires, but usually a spark plug wire or spark plug will give you the type of misfire you are having. Spray water around the plug wires adn ignition system. If water hits a bad plug wire it will cause it to arc, and misfire.

[erinmc]

My transmission is slipping and my over drive light is blinking

[wildman]

Year of the truck would guide a little about the internal workings, but slipping is never good.
Have you checked the codes, because sometimes an error for solenoids will show.
The speed sensor for some models goes rogue and affects shifting, causing the trans to fail.

Slipping is usually caused by two things, fluid under required pressure or the mechanical clutch disks worn.

I would start by changing the fluid and filter in the transmission and see if it fixes the problem. It's not expensive if you do it yourself, and sometimes fixes the problem. While you're under, look at the transmission cooler lines to make sure they're not pinched causing problems.
If it works after, great but if not you're most likely looking at torque converter, clutches, or the transmission as a whole.

[TerryAuto]

If the regulator is making noise and you have bad fuel economy, then the reglator is your problem.

[ronalddinnebeck]

Check the distributor cap. It may well be corroded. Also the rotor in the distributor might be worn. Lot's of reasons for your problem, but it is usually something simple. Good luck, R.

[navy444]

I have a 1989 F250 7.3L with 225,000 miles. I am getting an alarm (beep-beep-beep) from the engine compartment. When I shut off the engine the alarm continues for over 1 minute. I can find nothing in the manual I have. HELP Russ

[TerryAuto]

I dont know of anything under the hood of your truck that can make a beep sound. Maybe you have a non factory alarm and the siren or something is beeping?

You are going to have to be in a quite place to try to trace it down.

[tec]

ok fixed my trs problem no after 700 miles and now my evap sysm says inc any ideas and not junk it

[bjpw]

My windows and radio stopped working when I replaced my 3rd brake light on the cab and my interior lights stay on for several minutes after turning off the truck. The clock light comes on when you turn the light switch on. Checked fuses and relays and the only relays that click are #302,303 and 305. Fuses #32,31,30,47,46 and 42 aren't working. What could be the issue?

[carriedi]

ok, I need some information from you. Truck still runs and everything else seems to be working normally? How is the instrument cluster? everything working normally there?

fuses 30 (high beams), 46 (L-low beam), 47 (R-low beam) won't have power until you turn the light on to high or low beams

31 clutch (manual trans), trans reference (automatic) like neutral safety...

32 radio (start)

42 is for delayed accessory. temporary powered items after you turn off your key.

the radio, windows and dome are all run through the instrument cluster. check fuses 41 and 35. especially #41. $1 will cut power to the delay acc relay.

let me know what you find out