Ford Ranger / B-Series :: 1998 2.5 Auto - Stumbling On Takeoff
Jul 11, 2015
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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I've been having this problem for about 2 weeks now, and I am trying to figure it out. I know the video is only 5 seconds but at least you can hear the sound, it only happens in first gear, on take off, about 2-5 seconds after the take off, and the sound is coming from the rear axle area. I cant figure out if its diff or brake related.
Ford ranger Rear end noise - YouTube ....
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My Ranger has 296,000 miles on it. Most everything has been replaced except the u-joints. It's a 2wd 2.5L with an automatic. The motor was replaced at 228,000 with a used motor with 52,000 miles. The transmission has about 60,000 miles on it. All the bearings in the rear end were replaced about 20,000 miles ago. It has the most annoying whistling noise coming from the rear only sometimes. I don't know if it's the brakes being misadjusted or a bearing with a burr in it. It happens at random times but it's such a high pitched whistling you know everyone on the road can hear it too. There is also a driveline vibration, very minor though when over 60. However, I've had the drums checked and even had the wheels balanced many times. My friend said the ujoint grease could be dried up, but the whistling noise only happens at random, the virbation is anytime you're at highway speeds. It's not a violent vibration just enough to tell that it's not a brand new truck anymore. What it could be?
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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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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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Ok, basic rundown. Stop at a red light, turns green, when i go it gives a strange grindy-growl from the rear. Lasts maybe 2 seconds then its gone. its very uncommon. But it is something i am interested in getting figured out. Doesn't happen any other time, only on complete stops.
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There's a small but clearly audible chirping/squeak coming from my truck whenever I pull out. It goes away after the truck gets hot, but for the first 10 minutes or so, it squeaks only when moving. Not at idle. It is worse at low RPM's in 1st gear. And it's particularly bad in the mornings. I was thinking it is something in the idler pulley or the belt tensioner.
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I have a 1999 ranger 3.0 4x4 automatic the truck has a delay when put into drive sometimes it slips at take off unless I force it to downshift and stay in first and from second to third gear it shifts very hard at around 3500 rpm would an oil and filter change. I do not have the cash for a new trans and I can't afford a new truck. I love my little ranger...
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Looking for a good write to change the front rotor (BIG CRACKS IN IT) on a 97 auto locking 4X4 hubs? Any special tools etc...?
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Daughter driving truck truck quits moving, I get there no drive and no reverse, has low and 2nd manually.
drive truck home, flush trans and cooler, road test all ok. this was 3 weeks ago.
This morning did it to here again, no drive and no reverse, she drove it home using manual low and 2nd.
I get in and when put into drive it feels like it tries but doesn't go all in, same with reverse. pulled it into low and vola I now have drive and reverse again
I'm thinking a we may have a bad or going bad shift solenoid. What I need to know is, is any of the solenoid valves on when in reverse are they the same as when in drive?
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I'm working on a truck for a friend's mother and all of the tests that I've done point to the fuel pump. However, to make sure the pump is getting voltage past the large connector block under the cab, I would like to do a pin-out test before I pull the tank (or the bed). The pump will not run/prime in KOEO test, the relay is good, as are all of the fuses and the inertia switch.
Looking for a wiring diagram handy for this purpose? I've look all over this forum and searched quite extensively and I haven't found one for this year. Since it isn't my truck, I don't feel like purchasing a manual. I'm working on a 2003 3.0 2WD Auto.
If a wiring diagram isn't available, what colors are the wires going to the fuel pump? That way I can at least test the ground and the positive.
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MY 2001 Edge 4.0 5 speed auto has a noise while accelerating. It happens only when truck is first run and disappears after warming up after a few miles. It just turned 1500 miles. Can't figure out if it is from trans or possibly a speedo cable. It goes to the dealer next week.
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My sons 1998 ranger is in mph. Converting on to a kmh dash. There's one at the wreckers and I was wondering is it a direct replacement or is it a computer swap also? What years would work?
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I have a 1998 ford ranger and it will not disengage out of 3 gear. The truck still starts but if you let of the cutch. Of course, It stalls. I'm doing the work myself but where I should start looking.
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I have a 98 4x4 with 145k miles and 4.0 OHV. Symptoms are as follows;
Uses ALOT of oil. 1 quart per 230 miles. Burning bad in rear cylinders, some in middle cylinders, none in front cylinders. Screams intake or PCV issues to me, not rings or valves. Never any smoke, not even on startup. No significant leaks. MPG always 18-20mpg.
Slightly rough idle.
Miss under load below 2k rpm. Not a terrible miss, but you can feel it. Has never lit the CEL. I know the CEL is good.
Never loses coolant. No coolant in oil or vice versa. Haven't done compression test, but doesn't seem like they ever tell you much anyway.
This weekend I replaced all intake gaskets, plug wires, cleaned oil residue off and regapped plugs (they are 3 months old), injector orings, and PCV valve. Flushed and burped radiator.
It's too soon to tell on the oil consumption, but I thought the intake gaskets would have cured the rough idle and misfire. The idle IS much better, but still not perfect. But the low rpm load miss is actually worse now. Still no CEL. Could it be storing codes without lighting the CEL? Also, how do you clear codes on these, can you just disconnect battery, or do you have to clear them with a scanner?
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I have been having with my ford ranger. I bought this off my nephew bcuz he needed some money and never drove it due to it being a 5speed and he has a kid and a wife and no room. OK the issue I am having is in gear or neutral I can't get the 2.5 motor over 3000rpms in any gear at all. If you rev the engine up or r driving it when it hits between 2900-3000 rpms the motor acts as if it is going to die and looses all power until you let off the gas. I have replaced the following items on the truck. Oh by the way I have a Cam 2 hand held and there are no codes or warning lights. All new parts :
1) new fuel pump
2) fuel filter
3)new timing belt
4)new motor craft platinum plugs
5) new motor craft plug wires
6)new Mass air flow meter
7) clutch,pressure plate & throw out bearing along with new slave(that needed it replaced others since I was there)
8) exhaust tube behind motor(rotted out)
9) new idle control sensor (acts as elect. Choke)
Truck starts up real quick and idles fine, but when truck is cold the rpms @ 2500 does the same as when it is warm @ 3000 rpms. I even took it to the local ford dealer in my town. Youngstown oh @ Fred martin ford. They told me the wires should be replaced and plugs along with mass air flow valve. I called them after replacing it and told them no difference and the service manager told me to bring it in again and they will look again. Service manager told me he has never heard of this type of problem and I went to a local garage mentioned it to the lead mechanic. He said that is why he doesn't like fords they are to common in chronic problems and can't be fix without a lot of guess work. I have a Hanes manual and did everything it recommends to no avail.
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I've got 30 lbs of fuel pressure that drops to 28 if you rev it up a bit on a 1998 ranger 4.0 with a new fuel filter. Haynes manual say it should be 56-72 lbs. Bad news is fuel pressure regulator is in the tanks with the pump. Can the regulator be swapped out or is it one assembly with the fuel pump? Is there anything I should check first?
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Ok so my dad has been using my 98 while I was fixing his 92 4.0. I had the 92 perfect and then someone pulled in front of me and totaled it out. Well now I got my 98 back and it's all messed up. Check engine is on p0171. Fuel pressure test done and it's steady 40-42 psi. I remember last year I checked it was like 68-72 psi. It hasn't been a year or two since fuel pump and strainer were replaced. Filter probably 15,000 miles ago. It's currently running good sometimes it cuts off when you start it then next time it stays running. Is this another fuel pump failure? How much longer will it last on 40 psi? The fuel lines and tank have 336,000 miles, engine maybe 150,000 and injectors have about 20,000 miles on them.
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I got this 98 Ranger 2.5 that I've done a tune-up on less than 30,000 miles ago. I changed plugs, wires, and both coil packs. Timing belt, thermostat, fuel pump, fuel injectors are all recently changed too within a year or two. Fuel filter and air filter I change every 30,000 miles. The truck runs as great as a 4 Cylinder will run. It's at 344,000 miles but the engine was changed once so it probably has over 100,000 miles on it. There is just a slight miss you can hear through the tailpipe but it's not severe enough to be picked up by the Check Engine Light. In fact, even when the coils were totally gone it never put up the Check Engine Light. I can tell when a coil pack is going out on this because it's done it several times so I usually just change them with the tune-up. It's only a slight miss some people may not even notice it. I was just wondering is there any way to track down where the miss is? I tried looking under the hood in the pitch black and there's no plug arcing.
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so heres whats happening. My 98 ranger speedometer has not been working since I owned it (I am the second owner who got it from a grandpa) and I've replaced the vss sensor two times, got a new connector and gave that a try and still nothing. Yes I've looked for cracks in the wire or any exposed copper, I've looked through many forums and cant figure it out. At first before replacing the vss, my abs and check engine light weren't lit up until i put a new vss sensor on that i got from o'reillys, so then i got another one thinking it was just a bad sensor and still no luck. another thing is when its cold in the morning and i get in my pickup to go to work it will start working once i go over 30 and fluctuate between that and 20 but if i don't accelerate it will not bounce all over the place.
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