Ford Ranger / B-Series :: 1998 - Random Misfire / Power Loss / Hesitation - Code P1131
Apr 9, 2014
Ok I've been plagued with this very random misfire/power loss/hesitation problem going on a couple of months. You could drive the truck anywhere from 50-300 miles without having an encounter of this problem. It seems to do it now mostly on contiguous long trips over like 30 miles. It one time threw up a P1131 code which quickly went away on it's own. This is a list of stuff that has been recently changed: plugs, wires, coil packs, air filter, pcv valve, fuel injectors, tps, idle air valve, MAF cleaned, fuel filter, and egr valve.
I sprayed with brake cleaner for vacuum leaks around the intake tonight after driving a continuous 50 mile round trip it messed a few times on the way back. When I sprayed the EGR valve mounting area it idled rough when it was hit with brake clean and idled up. So there's a leak there. Or is it stuck? It will be driving normal and usually when you come to a stop the engine will start missing really bad and then when you take off there's no power at all. You keep your foot on the gas and eventually it will feel like all the power is just turned on.
If it does it while you're driving highway speeds it will feel like you've lost a cylinder but it's not as dramatic as when you come to a stop and it starts missing. I can't be 100% but I don't think the EGR wasn't leaking before I replaced it and it was still doing the same thing. I'm wondering why the Check Engine Light won't pick up an obvious misfire when you can you actually feel it. And why if it was the vacuum leak would it only start doing it after many miles of driving?
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This has happened before on my 98 ranger 2.5. You can drive it 10,000 miles without any issue and then all of a sudden you take off and there's no power but it quickly returns. Within the last year I've changed fuel pump assembly, fuel filter, injectors, cool packs, and plugs. Is it mass air flow? It seemed to happen a lot more after I cleaned it. My scan tool is amateur but it has a maf reading in lbs. What should it be while driving? Fuel pressure is always between 65-72 when I check it within specs according to my book.
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I have a 98 ford ranger with a 3.0 v6 it has 228,000miles standard tranny but I keep the truck running great. I did the plugs and wires about two weeks ago and it was running fine, actually great. This morning I got into the truck to start it this morning and it barely started. It fired up but barely stayed idling. I would get into the petal and it wouldn't raise rpms. I had to get to school so I headed out. I couldn't get any speed in gear the truck wouldn't gain speed. It would sputter and pop and then all of a sudden it would go ok but then start popping again. I took it to a buddy shop and his scanner showed p1131 and p1151 both codes. I don't know what to do?
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I had plugs and wires changed to try clear code. Car seemed to do some better but while trying to go up a steep hill car started stuttering and jerking. Power went out of car and check engine light started blinking fast. After let the car sit for bout 45mins car started running fine again and light stopped flashing but remained on. Code read cylinder2 misfire again.
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When i got my 2000 jetta vr6 it has a CEL for misfires. Searched this board and google already. Im thinking injectors (havent checked yet) I noticed something weird the other day. At a light i get the CEL flashing. Then after a bit it will come on and stay on. I plugged in my generic reader and deleted the codes. When the CEL is on I get loss of power and hesitation. When its deleted the car runs better. I get my power back. I looked in the coolant tank and see no bubbles. Could this be the ECM? Im still going to get injectors but want to buy the gasket and anything else I am going to need to put it back together. I already cleaned the MAF, replaced some vac lines, coil pack, wires and checked plugs (gapped at .28) ...
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I had plugs and wires changed to try clear code. Car seemed to do some better but while trying to go up a steep hill car started stuttering and jerking. Power went out of car and check engine light started blinking fast.after let the car sit for bout 45mins car started running fine again and light stopped flashing but remained on. Code read cylinder2 misfire again.
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Originally started with a p0302 code, and it cleared. CEL came back on with codes p1131 and P0401. First time with an 8 plug 4 cylinder. Truck has 263000 miles, and still original (metal) DPFE sensor. 1996 ranger 2.3L.....
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1998 ranger 4.0L. I ran my scanner on my truck to day and my 2 bank 1 sensors seem to be bouncing between .150 and .700 but my bank 1 sensor 2 seems to be stuck at 680-720 and not bouncing, is this normal?
I did pull a code po135 heater circuit malfunction BANK 1 SENSOR 1 ...
Also I am not sure where my fuel trims should be...
My
ST1 10.0
LT1 25.0
ST2 12.0
LT2 25.0
closed loop.
When I first got the truck I pulled codes for lean bank 1 and 2 also a cylinder #4 misfire and the bank 1 sensor 1 heater circuit. I reset the codes and the heater circuit bank 1 sensor 1 popped the mil light in 5 min. So I am starting with the o2 sensors. I've not found any vacuum leaks at this point.
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2008 Ranger 3.0L. I am trying to figure my next step in diagnosing a #4 misfire. At regular speeds I really dont hear it or feel it, mostly at idle warm or cold. 3.0L with 275,000 kilometers on it , reg oil changes.The CEL is on, but not blinking. Pulled a p0304 code. I then changed out the bosch plugs I had in with ford plugs and wires. The #4 plug looked okay just bigger gap. Still got the code.
I hooked up a sparkplug light to the coilpack and did not see any missing flashes . Changed fuel filter, checked fuel pressure,all within specs. Changed the oil and did not see anything in it. I read that it could be an injector but I have to remove the intake manifold to get at it. I also read to check compression. I figured if I have to take off the manifold I would put a new injector in, instead of switching them around. What is the most common cause for this code?
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I have a 97' hyundai tiburon, I have multiple misfires that are p301 302 304 and rich airflow. I have changed the coil pack, spark plugs and wires, and the MAF sensor. Basically my car doesn't accelerate fast or go over 40(max), it putters when i try to accelerate.
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I have a 1999 ford ranger 3.0 6 cyl with 211,110 miles It started running rough without any previous warning signs. In idle its barely noticeable, once i put it in gear it gets rougher and when driving around 40 to 45 mph it roughly shakes and shimmies. Once I get past the 40 to 45 mph range it settles back down. Is there a specific issue that would cause that at that speed. When going up over a bridge the check engine light blinks.
I changed the spark plugs and new wires and it offered no success even though one of the plugs were black (to much gas). I have borrowed a diagnostic tool and got P0305 cylinder 5 misfire, I am thinking fuel injector to replace, what else should I be looking at?
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I have a 3.0 Ranger, AT 2WD, from 2001 with 175K miles on it. I have a CEL on, with Misfire cylinder #5.
Also when the truck is cold and I step on the gas, it seems to run on like 3 cylinder for 2-3seconds and then it somehow fixes itself and runs great until it warms up.
After it warms up, it shakes violently at idle. The shaking goes completely away once I'm past 1200 rpm or while driving. What I tried so far:
- All new Motorcraft filters (Air, fuel)
- Motorcraft Plugs
- Motorcraft Wires
- Motorcraft Coil
- Ran thru two cans of SeaFoam
- Checked injector resistance
- "Reset" the ECU
- Cleaned MAF sensor
- Cleaned IAC
What else I need to check?
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1999 ranger 155k 3.0 flex fuel. 304 is misfire in cyl number 4... I replaced the plugs and wires and checked the coil. the compression in cyl 2, 4, 5, 6 and got 80-90 psi so they are consistent but consistently bad right, it may be my compression tester.
The #4 plug was spotless after running 5 min, the #5 plug had some black on it already. Its hard to tell but it seems I had fuel residue on the plugs on cyl 5 and 6 but none on 4? Whats next pulling the intake to get to the injector?
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Today my Check Engine Light came on for the first time in years on my 1998 Ford Ranger. It has 363,000 miles on it. But the engine was changed about 150,000 miles ago. It's a 2.5 automatic. It runs good and has no problems until today. I was leaving a shop and when I started up the truck the Check Engine Light came on. It wasn't idling bad but when I went to take off it wouldn't hardly move. I wasn't even able to keep driving. So I stopped and turned it off and restarted it. Then the Check Engine Light was gone and it ran fine. I scanned it when I got home and it a Pending code of P0446.
I've never gotten this one before. It said something was wrong with the fuel vapor vent solenoid open or shorted. I've never replaced anything on the evaporative emission system except a hose under the hood 3 or 4 years ago. I've had to change the fuel pump a couple times. I've never had any wiring issues. I've never hacked into the wiring. I've owned it since it was new. Is it likely that solenoid is failing or the vapor canister is shot? I don't need this to happen again because even if it's in what was called limp mode. there's no way I could've driven it home like that. I couldn't even pull over. I was lucky I was still in a parking lot.
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I have a 1995 ford ranger 2.3 L dual coil packs new plugs, wires, coil packs, tps, idle air sensor, internal temp sensor, and a replaced mass air flow sensor from wrecker. That all said my one son missed a plug when i replaced it , it had no tip left on it , but since then i now have a misfire in cylinder 2 where the olther plug was found and replaced ...
Gap for plugs are .44
Used the wrecker maf to see if it would clear a p0113 which it did. I am stumped on why at approx. 30 minutes of driving that the cel will flash then set a p0302, no other codes no fuel smell. rechecked plugs all are clean haven't been able to check fuel pressure yet, and i out a can of seafoam in the tank to see if it clear out injectors.
Besides all, I will check injector to see if I hear anything but I'm stumped. Also we have to have an emission test so is it best to fail the test and will it show me what I'm missing.
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1998 Ranger 4x4 4.0 Ltr - Runs rough ever now and then and CEL giving P1151 code. Upper and lower intake gaskets have been replaced.
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I have a 1998 Accord, 4-cylinder VTEC standard transmission, 226,000 miles. Last fall I first experienced a problem with the car where within 5-10 minutes of starting the engine and driving, the engine seems to lose power/fuel and RPMs act as if they'll drop low enough for the engine to stall. If I take my foot off the accelerator, and reapply, the engine seems to gain power again.
Also, if I open the accelerator to full while the problem is occurring, it can occasionally "push through" and gain power again. Similar things will happen while stopped. In neutral, RPMs fall low and suddenly jump back up and then settle into normal idle. The problem never persists longer than 10 minutes within starting the car.
I took my car into a local shop that came recommended by a friend. They investigated a "check engine" light that didn't explain the problem and were never able to recreate the condition themselves. They replaced a few parts but lost the work order so I don't even know what they changed, but the problem seemed to have solved itself for a while. Recently it started up again and I would love to sort it out.
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Got a 1996 Ford Ranger with the 4.0L in it that has a misfire on the #3 cylinder and giving check engine code: P303. Have tried new plugs, wires, distributor, switching out the coil pack with a known good, checked injectors for pulse, checked injectors, moved injectors and still the misfire remains on #3. Removed the valve covers and all appears to be well.
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I bought this from my brother in better than mint condition. Always maintained. Its generating a cyl #2 misfire code.
It starts and runs like new when cold, but when it warms up, it idles rough, and generates the code. after 1500 rpm it smooths right out and runs fine.
He had it to the dealer just before I bought it and they told him needed a new engine.
I am thinking bad injector, since what seems to be happening is, when cold it gets more fuel, or when u rev it gets more fuel, but at an idle and warm, it doesn't seem to be getting enough maybe. And I see from the maintenance records, a couple of other injectors have been replaced as well.
I think the dealer got tired of replacing injectors under warranty and tried to milk him for a new engine.
2002 ranger extended cab 2wd, 3 door, 232,000 kms 5 speed 3 liter V6, new glass and clutch..
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Have an 06 F150 5.4 3v with no power. spark knock. rough idle. wants to die while driving, and random misfire code. Have replaced fuel pump, filter, coils and plugs. What to check next? Already thought of EGR - it doesn't have one.
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I just bought a 1998 ford ranger with 228000 miles on it seems to run fine has the 2.5 4 cylinder with auto trans. Check engine light is on and code is a PO171. I've cleaned the mass air flow sensor and fixing to install new fuel filter. what the problem could be?
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