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misfire


  1. Loss of power, need help...

    I know "loss of power" has been answered before, (and believe my I've searched) but I feel my situation is unique. As soon as my 302 swapped Ranger was driveable, it ran great. The slightest tap of the gas pedal would roast the tires (or tire, with the stock 93 open differential haha). About a...
  2. 94 4.0l runs rough and dies when hot

    I have a 1994 ranger 4.0l 4x4 stx So one day I was out on the trail and my truck was running fine, shut it down, and it wouldn't start. The fuel pump was going bad so I was expecting this to happen anyways Buy this is when my problems start. I replace the pump and filter and the truck is running...
  3. theGreatDane

    Help!!!

    So i have a 1999 Ranger Supercab, 4x4 with a 4.0 and a 5 speed. A few months ago it started stuttering when cold, when i would accelerate, but would go away after 5 or so minutes of driving, and often less than that when i would floor it. Yesterday, however, it started stuttering more often...
  4. OBD code p0303 misfire, need help

    Hello everyone, new to this forum. I searched a bit but couldn't find anything that addressed my issue directly. 1997 Ranger with 2.3, 2wd, 5 speed manual, everything is stock, no aftermarket pieces. Bought the truck and had an intermittent misfire code on cyl 2. Finally tore into the engine...
  5. Sudden RPM Drop Confusion.

    Hey everyone, This is one of my first posts, but i've been lurking for a while. Just got a 94 4x4 4.0L V6 Manual with 225k. engine runs strong, however, There is a moderate leak in the passenger side valve cover. While coming out of a stop into 1st gear today, the engine suddenly lost...
  6. 91 ranger hit hole in road now runs HORRIBLE if it starts....!!!

    First off would like to start and say thanks for all the help with my previous thread a few months back. I got the problem worked out, turns out it was a "weak" fuel pump. Anyhow while driving today to get a part for A DIFFERENT vehicle, which is broken down, I hit a hug hole, open manhole...
  7. #2 cylinder misfire...

    Hello, I drive a 1998 Ford Ranger XLT 3.0 v6, manual with 236k miles. replaced the head gasket, timing chain, and cracked timing chain cover and spark plugs 2 months ago(about 5k miles ago) Aside from my slave cylinder and clutch beginning to go bad I haven't had any problems since, until my...
  8. Ditchbanger

    Little misfire aroun 1500-1600 RPMs

    93 3.0 This has me stumped. I have fresh ignition everything. Plugs, wires, coil, distributor cap etc. It doesnt always do it but if i keep it at steady throttle around 1500-1600 RPMs it acts like it has a misfire. Any more or any less throttle and its fine. Ive sea foamed it and that worked but...
  9. bad misfire need help

    I own a 2004 Mazda B3000and I'm having a good bit of trouble figuring out why I have a weak spark out of my first coil on the module and good spark on the other two. I have replaced the coil three times, replaced plugs and wires and fuel filter. The truck wont even spin a tire in gravel. No...
  10. Ranger 3.0 Misfire

    A few weeks ago my CEL came on, showing a misfire on cylinder 3. The truck still drives alright, but there is noticeable shaking at idle and at about 1700 rpm. My mileage has also dropped off pretty suddenly. I switched plug wires, got new plugs, made sure spark was getting to the plugs, and...
  11. Misfires on warm start?

    Hey everybody, really been enjoying reading all the information here. I bought a lovely 2001 3.0L XLT with flare sides about a year ago and our relationship has been on the rocks for the past few weeks. I'm getting conflicting signals and not sure really what's going on. I'm having rough...
  12. rough idle and poor gas mileage

    hello, i have a 1992 ranger 4.0l v6 2wd i just replaced the feul pressure regulator because it whent in my truck. now i am seeing the same signes i had when it was going. there is a very harsh idle (stalls if i dont rev the engine for abit) it almost feels like its misfiring. also i am getting...
  13. Cyl 6 misfire again

    I have searched multiple threads and the ones that seem promising, stop without the end solution. I have a 1996 4.0 and have had multiple issues trying to get it to smog. I have replaced an o2 sensor, spark plugs and spark plug wires. After this, truck was running fine and then a code got thrown...
  14. Misfire on cylinder 5 p0305

    Misfire on cylinder 5 p0305 (problem solved) Ok i have an issue, I have an 2004 4.0l and i have two codes that just showed up today. p0305 and p0316 since then I have replace the coil-pack, plug wires and plugs. I currently don't have access to get cylinder pressures or preform a leak...
  15. HELP!!!! 4.0l engine problems

    I have I 99 B4000 M/T, flowmaster muffler, magnaflow cat, K&N FIPK II intake. My engine is lacking power throughout the rev range but is most notable on the highway. I have trouble maintaining 65 if there is even the slightest hill, which usually requires downshifting and putting it to the...
  16. 03 3.0 flex 305 engine code

    I have a 03 ranger 3.0 flex that has a 5th cylinder missfire. I have replaced the plugs, wires, coil pack, a cracked manifold on that side and done compression tests on each cylinder (@140). Before I had the missfire problem I had loss of power problem with a catalytic converter code. The...
  17. TonkaMan

    Cylinder 3 is continually misfiring. Any ideas?

    The third cylinder in my 97' ranger is misfiring and I can't figure out why. I took it in to a shop and they spent 5 hours working on it. They said a fuel injector was clogged and the engine computer was malfunctioning and not sending a signal to the third cylinder to fire. They replaced the...


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