Ford Ranger / B-Series :: Stumbling And Sometimes Stalls After High Rev Coming Down To Idle
Jan 26, 2015
My truck has been doing this since I got it and I can't figure it out. It's a 2000 Ford Ranger XLT 2.5 5Spd. It runs fine if you don't rev it above 2500-3000 rpm. After you rev it that high coming down to idle it is stumbling real bad and sometimes stalls. I've been driving it like this since I got it, and it does fine other than this. It gets better the longer you drive it, but it still will do it if you rev it high enough.
Here are all the parts I personally have changed (previous owner said he did the plugs and wires and air filter, which it looks like he did but I'm about ready to change them myself):
-Fuel filter
-coil packs
-timing belt
-egr valve
-cleaned throttle body
-iacv
-tps
-thermostat
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So i have a 2000 ford ranger 2wd 4cyl .190k miles. My issue is the motor has a very rough/shaking idle,abs light on,and check engine light on.it also continues to blow fuses to the tail lights and dash, haha
Ive had it since it was at 40k and has been a great truck,although lately i have really neglected it.ive changed the spark plugs and new wires new timing chain. I would d love to start trouble shooting some of this stuff this weekend if the weather holds up.
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I have had my '99 Ranger since 2002. Since it has started getting hot in Texas, the truck has decided to stall at horrible times. When driving on the interstate, there is no problem, but as soon as I get in town and have to let off the gas to turn or stop, the whole truck dies. Unless it sits for a long time, it will continue to die at every stop. It is harder to start each time. I have changed the fuel filter and added STP to the last tank of gas. Also, it is tough to start and keep running until it has warmed up on any day. I have to sit in the truck and keep the idle up so it won't die.
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My 2005 2.3l Ranger ran great. I moved a trailer about 150 feet and stalled the truck backing it up. Stick shift. Unhooked the trailer and pulled back into the parking area....all the sudden the truck has extremely rough idle and stalls. It runs good on the highway. AutoZone ran a OEM number to cross: P0171.
I cleaned the IAC with intake cleaner. No Luck
I unhooked battery for 15 min. No Luck
I sprayed intake with 1/2 can of intake cleaner. No Luck
I did not have a tamper torx to remove the MAF. What next.
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I have a 1999 B4000 4.0L with 160K miles on it. Bought the truck new. Up until about a year ago it ran perfect but has developed an idle, stalling and occassional jerky ride problem. It occurs at any temperature, engine hot or cold, A/C clutch on or off and in Park, Drive or Neutral. When you start the engine it will not idle unless you keep your foot on the gas. The idle speed will drop to 200-300 rpm and the engine dies. Sometimes you can barely tap the gas pedal and the rpm will shoot up to normal idle speed (about 900 rpm) and stay there a few seconds then begin to drop again. If the engine is cold it will often die a couple times after starting even with the foot on the gas and then about the 2nd or 3rd time run with your foot on the gas.
At stop signs and red lights you have to keep your foot on the gas to keep it running. If you are approaching a stop sign and take your foot off the gas to coast to a stop and brake, the engine rpm will drop and the engine will die. It always starts fine though. Once you are driving it generally runs just fine at low or high speed. You can generally set the cruise control on the expressway and cruise right on. However, sometimes all of a sudden the truck will start bucking and jumping as if it has a terrible misfire. It usually lasts a few seconds and quits. Often if you step on the gas it quits. Even less occasionally the engine will begin to slow as if it is starved for fuel and slow down. You can press the pedal to the floor and it sputters a bit then picks up and runs fine.
I have read about all the threads in this forum and others and tried some of the suggested fixes but it still has the problem. I have tuned it up with new plugs, wires, fuel filter, air filter and PCV valve. Based on some of the forums advice I have replaced the IAC valve, the EGR valve and EGR Pressure Feedback Sensor, and cleaned and inspected the MAF sensor with MAF cleaner. I have checked all my vacuum lines and no leaks there and checked the engine timing which is fine. Fuel rail pressure and engine compression are also fine. Spark plugs show no clues, exhaust is clean and the engine uses virtually no oil. There has been no tear down on the engine like removing the heads, cam, timing gears or any of that and the engine is completely stock.
It shows no codes related to the problem. Two or three months after the problem started I showed a code that indicated an injector problem, traced the problem to a bad injector, replaced the faulty injector and it was fine. That took care of that code but didn't solve the idle problem. In my younger days I was into drag racing and I rebuilt engines, swapped transmissions, etc. and still do my own tune-ups today so I am fairly familiar with auto repair and have most of the tools for testing newer cars but this one stumps me. As a last resort I'm about to take it to the dealer.
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I have a 99 Ranger w/3.0. It idles about 1500 rpm cold,and 1200 warm. Here are the things that I have tried.
1.Checked ALL vacumn hoses/lines
2.Changed Air idle control sensor
3.Throttle position sensor
4.removed and completely cleaned throttle plate in throttle body.
5. removed top of intake manifold and checked for cracks and/or leaky gasket.
Nothing seems to change. Could it be a faulty ecm?
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I've got a 1988 2wd Ranger with a 2.9l v6. I just recently got it running. It has been setting for awhile. I replaced fuel tank, both pumps, fuel filter, Plugs, Wires, Cap, Rotor, TPS. It ran great for about 100 miles. Then yesterday on my way to work about 4 miles down the road it started to miss/stumble especially at about 55mph while in overdrive. When I got home I pulled the codes and I got KOEO 22 Map sensor signal out of voltage(engine off), 53 TPS signal voltage to high, 95 Thermactor Air System Problem, or Fuel Pump Monitor signal, indicates circuit problem.
KOER I got 21 ECT sensor signal voltage out of range or loss of signal during normal operation or Crank Sensor problem, doesn't have a crank sensor I believe. But I did change the ECT sensor and it still stumbles and seems like it misses. Noticed it is sluggish getting up to speed kinda surges and bogs. Im at a loss it isn't showing any more codes. Checked all plug wire connections and made sure everything was making connection. The only other thing I can think of is that the ignition module on back of distributor is going bad. Not advancing the time correctly.
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I've been through this same scenario quite a few times before but I cannot narrow it down to the exact problem. I've got this 1998 Ranger that's maintained well, tune-ups, oil changes, and everything else maintenance wise. The past few months randomly driving anywhere from 200-300 miles every once and awhile it would hesitate taking off from a stop or accelerating after letting off the gas. It would throw up a P0171 code so I thought the fuel pump was bad. So I replaced with a new fuel pump assembly. That worked, fuel pressure is now within specs. 65-69psi. Still every 200-300 miles it would throw up a P0171 code, then a few weeks ago it kept coming up more frequently.
I found out it was a broken vacuum hose from the purge valve to the intake manifold tube so I replaced it. Now it doesn't come on anymore. But before I noticed that hose I assumed the mass air flow sensor was bad so I cleaned it with CRC Mass Air Flow cleaner. Since that time it's gotten worse and now stumbles and hesitates every time you stop and takeoff. Sometimes it even chokes the motor out with the a/c on and you come to a stop. I knew the ignition coil also causes the same issues so I checked them. The front coil pack had a burned electrode leading to number 4 cylinder intake side. I replaced the coil cleaned that end of the wire and it still is stumbling and hesitating. I tried the trick of unplugging the mass air flow sensor and driving to see if it was better. No change at all.
After I replaced the coil a few minutes ago I test drove it and stopped and then turned a corner and gave it full throttle with a/c on and it actually shut off. But still there is no check engine light and no codes present. What's going on? I looked at the back coil and didn't see any corroded terminals. It started happening all the time upon takeoff right after I cleaned the mass air flow. But when I unplugged the sensor and drove it around nothing changed at all. Is there something else to check? I had the timing belt changed last week and had the shop check to see if timing is good and they said it was right on. It still drive good you just have to tap the gas twice when you take off to overcome the stumbling.
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My 92 ranger, 2wd, 6 cyl, manual trans, is running at about 3500 rpm at idle. I was wondering what might be the cause, maybe something with the throttle or could the gauge be screwed up.
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My ranger 2.9 automatic 2WD has an high idle when started for about 6 min, engine can be hot or cold, still get the high idle, then it will drop to around 900-1000. I've changed the Idle control twice, checked EGR function. Replace temp sensor. Disconnected battery for 15 min. No code output.
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Ranger often wants to idle at 2,500 to 3,000 rpm. I'm glad its got a clutch! This is a long term intermittent problem that is getting worse. I have replaced the the IAC twice. I have unplugged the IAC when the engine is in high idle and the engine idles normally. But, starting the car with the IAC unplugged makes car run rough. That makes me think the IAC is not getting the right voltage input from the pmc (eec). Mine is a 2002 with the 3.0 engine. Throttle plate seems to be closed.
What sense inputs does PMC use to determine idle air position? Also replaced TPS sometime ago but that didn't work either. Sometimes turning off the a/c will knock the idle back to normal but not always. Turning the car off completely usually resets idle. But the high idle comes right back after accelerating. Drove the car today and idle would stick and stay high when clutch pushed in coming to a light. However. as the car slowed to a stop the idle would come down when rolling 1-2 mph. ??
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1999 B3000 with a 3.0. The truck idles at 850rpms. When it starts it idles at around 1000 and runs very rough. When I disconnect the IAC the engine dies. The AC also has problems it blows cold at idle but at highway speeds after 7-8 minutes running the compressor kicks out. One can turn it off and it blows cold again after a few minutes.
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I have 95 ranger 3.0L revs up over 2000rpm at startup then comes down slowly to a little over 1000... Changed the IAC valve still does it... When I let it warm up I unplug the IAC and idles normal and smooth about 750 RPM so I don't think it's a vac leak... What else could it be???
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Truck is a 2003 Ranger EDGE 2wd auto w/140K miles (looks new) that was a one owner truck I recently bought. Came from Texas and is clean and was well maintained I got all service records up until I bought it in the fall last year. OK now the problems...
First...it has a high idle in the mornings when cold about 2000RPM. After it warms up it settles to about 800-900RPM but is VERY ROUGH to the point where it feels it will stall. I DID replace the spark plugs and the plug wires look newer and are not OEM. I DID remove and clean the IAC and it does not look very dirty but I did slightly clean it anyway.
When I did this I disconnected the battery for 20min. After I put it back together it ran smooth for about the first 10 minutes then same rough idle came back. I was told this truck has no EGR so that's not an issue. There are NO CODES and when I ran my pocket scanner nothing comes up either. Should I just go to NAPA and get a new IAC anyway? What else can I do?
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My '03 Ranger is having a high idle problem. It's a 3.0, manual, 2wd, 141,000 miles. When it's cold it will idle at about 1500 but once I drive it, even just to the end of the block, it will idle at about 3000 and shoot up towards that between shifts. At a traffic light it will idle at 3000 and maybe go down to about 2500. If I bog it down with the clutch it goes right back up once I put the clutch back in or put it in neutral.
I replaced the IAC, no luck. I cleaned the MAF and checked the voltage on the TPS and it is good. I replaced the PVC valve, but the old one was fine anyway. I've sprayed around with carb cleaner and don't notice any difference. I've plugged it into my dad's AutoTap which lets me monitor everything on my laptop and the only thing I can see that looks suspicious is that even with the engine off, the Absolute Throttle Angle reads 18.8%. If I step on the gas with the engine off it goes up to 91.8% so I would imagine that just has to do with the function of the TPS and probably isn't out of the ordinary, but I don't really know what that number means or what the Absolute Throttle Angle is or is supposed to be.
Short of taking the intake plenum off and physically inspecting it for cracks, I'm stumped.
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I have had a small antifreeze drip coming from up high around what I have been thinking was the water pump gasket. I have not pin pointed it exactly though. for the last 3 days i have been getting code po174 and now added po171 to that list. Also have something going on with my fuel fill vent or something as for a while now i have had to slowly squeeze in fuel to keep the pump from auto shut off on me like its full already. I have tried cleaning out that vent tube by spraying in carb cleaner even blowing on it but it seems to be a check valve, not able to blow in. i am thinking tonight that antifreeze leak may be related to those codes too. any thoughts? its on my 2003 ranger 3.0 flex fuel.
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I have a 1997 Ford Ranger XLT 6 cyl. 4 wheel drive. I got this truck from a friend. Only had it for a month or so has about 185K on it but has been running great.
I did notice a couple times that when I pushed the clutch in approaching a light the truck would jump a bit in RPM to about 2600. but go back down in a second or two.
This started to occur more frequently and now it does it almost all the time....when I push clutch in it revs up to about 2600 RPM.
Now I can have my foot on the brake and let the clutch out to put some strain on the engine and knock the RPM down but its still a bot high in the 1k range. Sometimes it actually goes back to normal...
When I started it this morning it was fine....but after two shifts it started and lasted the 12 miles to work. What could be causing this? It does not seem to go above 3000 RPM when it revs.... Other then that the truck runs great.
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I have a 1997 Ranger with a 3.0 v6 with a super high idle.
It idles at 2500 RPM when the IAC is plugged and a steady 1100 when unplugged. I have replaced the IAC twice now (dropped the first replacement. long story) and and have also checked for vac leaks with no results.
After about 2-3 minutes of idling at 2500 on a cold start it will drop down to 1100 (same as when IAC is unplugged), but after a 10 minutes or so drive it will idle steady at 2500 with minimal if any dropping in RPMs. This is driving me crazy not only because it sounds horrible but also because of the fact it's burning through fuel like it's going out of style.
I have checked the MAF sensor and it looks brand new (not the original owner) along with the O2 sensor. I have been meaning to check the TPS voltage to see if it's working correctly but without a working multi-meter it's making it difficult to do anything.
I'm at a loss with this right now and because of all the previous repairs i have done to it and the others that still need to be done i don't have the biggest budget to fix this problem nor the money the truck is using in gas.
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1996 Ranger 2.3 140 CID XLT 126,000 Miles. When coming to a stoplight or stopping the engine idle is low and causing engine to almost die. Engine has been stuck at high idle a couple of times. It started with the engine idle slowly coming down and now it its too low. I suspect the Idle air control valve.
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2000, 2.5L standard transmission. IAC replaced about 2 years ago, DPFE sensor and vacuum hoses replaced early last summer. Truck has been running just fine until I washed it last night. Went to work, and when coming to a stop and pressing in the clutch, engine starts to race without coming back to idle. Had to turn the truck off in order to get the engine from racing. Same thing on the way home. What else can/should I be looking at? I did not open the hood to wash the engine off, so it can't be water from the wash.
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My Ranger has been acting funny lately. My check engine light is on. I stopped by an Autozone and the guy read the codes - I don't remember exactly what the code was but he said I just needed to use some fuel cleaner - he recommended Seafoam. Now, I assume he was just trying to sell me something. But I've tried that, Gumout and STP in the tank with no luck.
If I'm driving and come to a stop, my RPM dips down to about 600 or lower, my truck starts shaking and will eventually stall if I don't step on the gas. This only happens with a warm engine - If I start the car up and go a mile down the road, it won't happens. But if I go 10 miles down the road, it will. I assumed I had a bad throttle position sensor so I just ordered the part and replaced it but the same behavior exists.
It's been a while since I've replaced the fuel filter - it might just be that.
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