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Come along with Eric O. at the SMA shop as he has a look at this poor running 1992 Ford F-150 5.0 4x4. The customer has a complaint of harsh shifting, poor idle performance, no fast idle and sudden engine "flare ups." Having dealt with these older Fords's in the past it does not take long to track down a faulty MAP sensor and get it repaired.
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50 thoughts on “Ford f-150 5.0 – rough running / slams into gear”
  1. Avataaar/Circle Created with python_avatars Robbie T says:

    Easy fix if so how. Its a v8 5.8 1995.
    Felt like someone when it's the back of us when lifting of the gas

  2. Avataaar/Circle Created with python_avatars Robbie T says:

    Hi what Is the issue on a 1995 flareside, when you take your foot off the gas it feels like it bangs into gear. Currently for sale so I walked away. Felt really uncomfortable when coming off the acceleration

  3. Avataaar/Circle Created with python_avatars Smarternu says:

    I want that truck. Extacab shortbed with a six. gotta get me one.

  4. Avataaar/Circle Created with python_avatars John Timperley says:

    1990 5.0 Lincoln Town Car Air charge Temperature Sensor?

  5. Avataaar/Circle Created with python_avatars bas1563 says:

    🇺🇸👏🏼👍🏼

  6. Avataaar/Circle Created with python_avatars bad66chevelles says:

    These are nice trucks when you get all the Fordness out of em. I got a '78/'89 both f150s an I got rid of the efi on the '89. I had a '96 back in high school an drove the heck outa it an sold it for scrap I kick myself now. The '89 I have now isn't 4×4 like my '96 was but I always wanted to have the freedom to really get performance outa these trucks. There getting older now an rotting away.. most vehicles you see on the roads now are generally 2008-up not much 90s nomore. These trucks are ageing an what happens alot with them is the drive train is perfectly still fine maybe wornout but still good an the electronics fail an sensors fail an just being outside an temperature changes from hot weather to cold an moisture take there toll after 30 years nearly an they make the trucks either run funny or not run at all. I got rid of the ecm an ignition system an all the emission junk an pile of vacuum lines an my '89 will be much more reliable an run so much better. I also went back with a mechanical fuel pump. Electric is truly better I agree but I don't like a bunch of clutter an fuel pressure regulators an clamps on fuel lines. I like the fuel line to be 1 whole piece an not cluttered with clamps. You'll still have technically 4 clamps from tank to pump on block but I can't stand clutter plus less connects in lines are less likely to leak an in this case fuel lines it's safer fire hazard. Never liked fords plastic fuel lines so close to the exhaust. I bent up a 3/8 fuel line on mine an threw away that junk lol. Fords are nice like I mentioned just gotta get rid of the "Fordness"

  7. Avataaar/Circle Created with python_avatars Eleazar Mata says:

    What s the name on that sensor

  8. Avataaar/Circle Created with python_avatars Luke S says:

    Fomoco always had a way to insure job security for the independent shops. Mounting relays and sensors upside down so they gather as much moisture as possible. I alway kept a known good MAP and a few relays in my diag. drawer. Customers love when you can fix what seem like big issues in minutes. I probably made more in cash tips replacing those MAP sensors than I did book time on the invoice.

  9. Avataaar/Circle Created with python_avatars miatamang says:

    Had one come in with the same issue. Turns out the computer was giving the TPS 8 volts. Had the computer repaired and worked fine after.

  10. Avataaar/Circle Created with python_avatars TheSi2010 says:

    Appreciate your video! I was having the same problem and changed the MAP and it runs like a dream!!!! Thank you.

  11. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    There your problem lady Water in your Map lmfao 🤣 Eric O @SouthMainAutoRepairLLC

  12. Avataaar/Circle Created with python_avatars Rolling Thunder 420 says:

    I have all the same symptoms but I just put a new map sensor in it a week ago any advice? Where's your shop lol

  13. Avataaar/Circle Created with python_avatars Mike Regan says:

    Experience counts.

  14. Avataaar/Circle Created with python_avatars Thomas Carroll says:

    I have a manual 5sp 94 2wd 300 inline 6cyl. I changed my slave cylinder, and put everything back together. Now my tranny seems like it doesn't want to shift properly. I have to put the gear shifter into gear, but then I have to rev the engine pretty high to get the truck to move. This is in all gears to. Any help you can offer?

  15. Avataaar/Circle Created with python_avatars Mel Plishka says:

    That truck had such good paint I couldn’t tell vintage with the hood closed lmfao.

  16. Avataaar/Circle Created with python_avatars Mel Plishka says:

    Nice old school eec lol.

  17. Avataaar/Circle Created with python_avatars Mel Plishka says:

    Is that a triton or the new gen modular lol.

  18. Avataaar/Circle Created with python_avatars Bill Preno says:

    Eric thank you some much for this video, my problem was the same when I looked and removed it I saw that someone had replaced it before so I was a little skeptical about replacing it, however, installed the new one, and bam just like that it fixed the problem, I did check for voltage but couldn't check the Hz, broke opened the old one found a lot of moisture inside, so now I will put silicone on it now, but wouldn't think they would put the seam on the bottom? PS look forward to your videos in the future and will be buying a tee shirt to help support your efforts.

  19. Avataaar/Circle Created with python_avatars Texas Trill says:

    Would it just jerk into first gear? Or all the gears?

  20. Avataaar/Circle Created with python_avatars Chad Guthrie says:

    Do the 5.8s do this to

  21. Avataaar/Circle Created with python_avatars dale crawford says:

    dale crawford

    6 hours ago

    i have a question, Have you ever came across a vehicle that when cranking it over the engine seems to have no compression? It's like all of the sparkplugs are removed. Then 5 mins later it starts normal. This has happened to me twice. Once on a ford courier, every morning cranks like 0 compression then sometimes within 5 mins it starts other times up to an hour before it starts. the second time this has happened was yesterday on my 1990 f150 4.9 4×4.

    I was driving home two nights ago the engine just stalled like I turned the key off. first thing i checked for spark. Had none, removed the spout, engine started. I drove it home. Yesterday I put the spout back in, tried to start it, but it acted like 0 compression. I went in the house refiled my coffee cup. went back outside cranked the engine and it started up normal. I have seen some strange things in my 50 plus years as a mechanic but these two vehicles are mind blowing

  22. Avataaar/Circle Created with python_avatars 1st Last says:

    Do the idi diesels have this same sensor? Or just the gassers?

  23. Avataaar/Circle Created with python_avatars Kurt Kaufman says:

    Absolutely great video, I just picked up a 1993 F150 OBS and have had several issues related to Vacuum, EGR, Act and this really helped. Thank You.

  24. Avataaar/Circle Created with python_avatars Christopher McDaniel says:

    I have a 93 f150 with a 5.0 302 and every time I press down on the throttle it jumps really bad and I’ve replaced parts that people told me to replace but it still jumps and I was wondering if anyone knew what the problem was

  25. Avataaar/Circle Created with python_avatars Cratos Zeus says:

    I have a 95 f250 with a Windsor n now all of once it’s at operating temps it breaks up bad like it’s out of gas or spark plug wires r grounding out, but if u give it full throttle it gets thru it. The truck was speed density but the engine harnesses was changed n was still plugged into a sd ecu I put in the correct eco n it was good. But out of no where this started this n I got home n it shut off n would not start no spark I said ok either the ignition control module or the coil ended up being the coil but put both new. I’m kinda stumped

  26. Avataaar/Circle Created with python_avatars Klaus Von Schmit says:

    Thank you!

  27. Avataaar/Circle Created with python_avatars Jerry Riggan says:

    Would that make it slam into reverse? Shifts good into drive .

  28. Avataaar/Circle Created with python_avatars Howard Whitcomb says:

    Looking for the same truck only with the 351 instead of the 5 o

  29. Avataaar/Circle Created with python_avatars N. B. P. Davenport says:

    Have one with the same problem change to a map airflow and still have the problem

  30. Avataaar/Circle Created with python_avatars Stagg Degraaff says:

    I had that problem with a 94 bronco xlt lariat 5.8 . I bought for 250.00 the guy said it need a new transmission and all it was two sensors the throttle position and map sensor and it worked perfectly fine.

  31. Avataaar/Circle Created with python_avatars nigozeroichi2501 says:

    I know it's 4 years ago, but exact same thing with my F150, piss poor design, let's put it where it's going to get drenched every time it rains and have it so water CAN get in it and ruin it

  32. Avataaar/Circle Created with python_avatars L.A. Commander says:

    Love these Ford trucks from the late 80s and early 90s. Those 302 and 351 motors were strong as hell and almost impossible to blow up. Easy to work on, rarely had problems. Sure, you might have to replace the TFI module or a MAP sensor once in a while, but compared to today's cars I would much rather have one of these older "square body" trucks

  33. Avataaar/Circle Created with python_avatars MeMakeSparks says:

    'Not sure why the other shop wasn't able to track that down'? Cumulatively speaking, the five guys at that shop barely have a tenth of the information you have floating around in your cranium….

  34. Avataaar/Circle Created with python_avatars oldman 53 says:

    That's why I watch your channel, you are a professional. I was going to be very disappointed if you didn't seal the bottom of the sensor because I would have, especially knowing that water got in the old one. My truck is the 92 regular cab 2wd with 236,000 but it doesn't look near as good as this one. Still runs like a top though.

  35. Avataaar/Circle Created with python_avatars Misfit Builds says:

    Can amyone help me? I have a 96 5.0 f150 automatic. When driving it upshifts abruptly and rough. Downshifts just fine, i cant find anything online about anyone else having this issue. What could it be?

  36. Avataaar/Circle Created with python_avatars Mark Ferrick says:

    Nice diagnosis. Pretty truck, nice paint.

  37. Avataaar/Circle Created with python_avatars Jeremiah Johnson says:

    Hey bud I have a 92 Ford F-150 2wd 302 5.0 it’s the AOD transmission while in Overdrive it shifts into gear a little hard but I’m drive it don’t do it as bad but still a little harder than I’d think should be normal a friend rebuilt it and also besides the shifting a little hard when I turn the air on max it will bog the motor down for a second but then it will run fine and every now and then the check engine light will come on after driving it for a bit any help would be appreciated very much idk where you hook a computer up to read the code on it either thank you for any input you can give me!

  38. Avataaar/Circle Created with python_avatars Jeremiah Johnson says:

    Hey bud what kind of transmission fluid goes in a 92 Ford F-150 it’s got the 5.0 302 automatic transmission I think it’s the AOD someone told me dextron 3 and another said Mercon 5 any help appreciated!

  39. Avataaar/Circle Created with python_avatars Joe Carroll says:

    I just got a 95 F-150 and I'm just I've got the inline-6 with a manual give me videos on that

  40. Avataaar/Circle Created with python_avatars Larry Bates says:

    Eric, you da man.

  41. Avataaar/Circle Created with python_avatars Jeff Powers says:

    Wanted to thank you guys since my mechanic spent a couple hours labor on my 92 with no results. $20.00 part just installed myself in under 3 minutes. Didn't bother un bolting old one just zip tied to it! Runs way way better. Starts without using gas pedal anymore. So grateful

  42. Avataaar/Circle Created with python_avatars TatmanMyOwnBoss Danny Draco says:

    hope this fixes my truck🤞

  43. Avataaar/Circle Created with python_avatars William Licerio says:

    Badass truck

  44. Avataaar/Circle Created with python_avatars William Laakkonen says:

    It seems pretty obvious this was a "technician induced problem" as that MAP sensor was designed to be mounted with the open side facing down- not as it was found. Adding silicone will not get rid of condensation- and indeed may trap it. The sensor was intended to drain mounted with the removed cover facing the ground.

  45. Avataaar/Circle Created with python_avatars Jesus Alvarez says:

    I have a 95 5.0 and it has this exact problem but the 95 doesn't come with a MAP sensor.

  46. Avataaar/Circle Created with python_avatars Awhiteguy says:

    Will someone get this man a battery operated screwdriver, my wrists ache watching you with that nutdriver. Great video, impressive diagnostics

  47. Avataaar/Circle Created with python_avatars Beardedcap says:

    When this one slammed into gear would it ever kill the engine as if the torque converter wasn't unlocking? Specifically when cold? I have one that only slams into reverse, when it's cold it doesn't slam but it will stall the engine. When hot it will slam into reverse but doesn't stall. Already had the trans rebuilt and am about to take it back under warranty but I've been trying everything I can think of to eliminate electronic/engine issues. The engine runs pretty good, runs great under load but does have kind of an intermittent rough idle

  48. Avataaar/Circle Created with python_avatars james haliday says:

    prob with 4.9 misfire checked all ,next leakdown ,lifters?stuck

  49. Avataaar/Circle Created with python_avatars james haliday says:

    nke james loike you vid ,

  50. Avataaar/Circle Created with python_avatars Andrew Inbody says:

    Thank you for this. I am not a mechanic but I like fixing my own problems.
    The symptoms you described were exactly what I was experiencing.
    One 7mm wrench and a new part ($50) made my truck run better than before.

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