Ford Ranger / B-Series :: 1994 V6 Idles Low - Surges Up / Down - Black Smoke Puffs And Smells Like Gas
Jul 8, 2016
I have a 1994 Ford Ranger with 4.0 V6 Automatic. The problem is when it idles it idles low and surges up/down and pushes a very small amount of black smoke puffs and smells like gas. I have installed new coil, new wires, new plugs, new ect, new crankshaft position sensor, and new maf. It has new intake manifold, new injectors, new alternator and it still does the exact same thing. Nothing is phasing it. I ran the key on/engine off test and got egr codes and a map sensor code, then ran the engine running test and got 998 and 126 code. The 998 code says that its basically a hard fault/ have no idea.
I do know this is a donor engine out of another year not sure what year, but i know when i ordered the coolant temp sensor the only ones that would plug into it are the years 1990-1993. Now here's my other question, why would the computer give me a map sensor code when truck doesn't have a map sensor? It has MAF sensor, and why egr codes? The truck doesn't have egr and never came with it. I do know I've unhooked battery and replaced the maf and its like it doesn't even recognize it? Could it be the ecm/computer bad or needs flashed?
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I am not sure what is going on with my car. I have a 1998 saturn sc2 and this morning it started smoking from the tailpipe. The oil is black but the smoke smells like something is burning......
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My truck is an 03 and I changed number 5 injector and number 4 injector, checked my ficm everything is good there now I have a contribution balance code for injector 4 now injector 5 and an EGR code some guys on hear before said it could be a sensor but today I talked to my mail man who also owns a 6.0 and he sounds pretty knowledgeable he says it's possible that it could be that the computer is not reading out right and those cylinders are getting to much fuel for an instant that's what's causing the sudden puffs of black smoke. My torque pro is giving me all these codes and I'm starting to think that there is something underlying....
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So about a week and a half ago I went to crank my 03 6.0 truck up after having driven it to the mountains (about a 5hour round trip) several days ago. It was a little slower than usual but nothing too alarming, got to work and worked a full day, came back to my truck and it took even longer to crank. Drove to my girlfriends house to pick her up, only had it shut off for like 2 minutes hot and when I went to crank it it took two tries. From then on it was only bad at cranking when hot but now it takes 5-8 tries to crank whether it's hot or cold.
I took it to my buddy who owns a diesel mechanic shop and we hooked it up to his computer, everything checked out just fine, oil pressure was good, so was all injectors and ficm voltage, no red flags at all. So I went ahead and changed the icp, nothing, then he told me to change my aftermarket oil filter to motorcraft oil filter, still nothing, I also changed my oil filter drain valve and nothing.
When I'm attempting to crank the truck, after I hold the key attempting to crank it for maybe 8 seconds my oil pressure gauge jumps to normal. I have an ipr on the way to my house and I'm gonna try that as well. Also when the truck gets running it runs just as it ever has, no weird sputtering or stalling or cutting off. But when it does finally crank it puffs out a little black smoke.
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Title says it all... Starts & idles pretty good. No codes. Has decent power on mild acceleration, any time you step on it more than 1500rpm it lets out little black puffs of smoke and intake makes that popping sound and truck jerks a little...EGR delete. HPO pressure is good. Injectors are fresh as of a year ago. Valves? Lifters? Turbo?
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I noticed green coolant leaking from bottom of black, what I think is called, timing belt cover. There is 188, 000 miles, and when I changed the timing belt, I did not change the water pump, although I did change out the thermostat. I have done a lot of work on this truck in the past. I checked the oil and no signs of water or coolant mixed in. The water pump is not weeping from the top well. I rely on this truck and the way I look at it is I may just keep driving it until it goes kaput (its real beat up). Should I go to an auto parts store and see if I can buy some sealant. I would guess it is either the water pump or maybe the timing cover gasket? I have inspected all hoses, and I see nothing. The leak must be coming from somewhere under that black, plastic cover. I am capable and willing to do just about anything other than perhaps a full engine pull, although I have the wherewithal to do that too if absolutely necessary.
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Finding the fix for the rich fuel puffing black smoke fuel reg ok, map ok, temp sensor ok, air sensor ok...
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1988 4.0 - noticed fuel mileage going down and an occasional stumble for a while but now I am getting some black smoke more when I let off the throttle than when I going down the road if I rev the truck get all kind of black soot all over the floor otherwise runs fine idles fine the iac has been replaced air filter replaced check the fuel pressure regulator for any gas leaking into the vacuum line and its clean.
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I have a huge problem. My 94 ranger 2.3L 5 speed manual transmission, has problems with idoling while it's cold, has no power going uphill and stalls when I slow down to stop. This is all after putting a new motor in. The old one was running ok with 310,000 but lagging bad. I figured with the driving I do, a new motor wouldn't be a bad thing. Boy, was I wrong. It has been a nightmare. But once the truck is up to operating temperature, it runs so smooth you wouldn't think there was a problem. But let it cool off, restart, and boom! There it is. We have changed so many parts and sensors with absolutely no change to the original problem. It's very frustrating. I just can't let this problem win. I will figure it out.
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2002 Ford Ranger edge 3.0 flex ... Truck was running fine and giving me no issues. I woke for work the other day and went to get coffee and truck wouldnt start. I could hear fuel pump running and knew it wasnt that, it was acting flooded. So today I pulled fuse from fuel pump relay, and got it to start. Put the fuse back in and ran to gas station. On the way to the gas station it started running really rough, very low and rough idle, trying to stall out. I noticed it had black smoke coming from exhaust. I got it home, and got it to start barely, and it has the same very low and rough idle, but my oil gauge was going crazy, flickering back and forth all crazy, and the idol is terribly rough and eventually stalls out. Earlier today I did put new spark plugs in it, but not sure that has anything to do with the issue. I also hooked it up to a computer and it isnt throwing any codes.
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2005 F250
123'xxx miles
EGR delete kit
This is my problem, the truck Idles then revs by itself and throws black smoke.If i leave it on it eventually seems like it floods and shuts off,when i first noticed this it had a loss of power and was having a hard time shifting gears, it would idle fine but when i would try and drive the truck it had no power. I changed the diesel filters and the air filter and the problem persists.
Could this be a bad turbo? Injector?
Here is the video of the problem.. F250 problem. - YouTube..
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On Tuesday morning I was watching an auction on my computer and saw a 2003 Ford F350 Super Duty Crew Cab Fx4 with 200K on it. It had an inspection report which is *supposed* to note every cosmetic and mechanical issue. It had nothing listed wrong with it for mechanical. I "won" and for my prize I get a rough-running 6.0 diesel delivered.
I just got off the phone with the transporter who picked it up today and he said there are no check engine lights but it is running rough with no power. So I am having him drop it off at a diesel repair shop.
Hopefully it is just something with the wiring harness but I have a feeling it's got at least a few bad injectors so I am probably screwed.
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I've had my 2001 Ford Ranger for almost a year now 240,000 miles, almost no problems until now. It doesn't overheat, but smoke is coming from the hood and smells like burning oil EVERYTIME I start it up & drive it. I don't think its a head gasket problem, but I could be wrong.
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My surging/running down issue has returned on my '86 2.3l Ranger. I thought it was electrical, when things improved with the new ignition switch, but lately it's hard to get out of 2nd gear before the engine surges then starts to lose power. a poke of the gas pedal starts the who cycle over again. I pulled codes but it's hard to tell what the reader is saying either 33 and 34 or 334. The good thing is all the codes point to the EGR system. Looking for a diagnosis tree to determine if the valve is bad or the sensor is shot? They are both not cheap so I don't want to just throw parts at the problem.
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My '90 Ranger is experiencing a pretty bad misfire after doing a tune-up. I changed the plugs (gapped to .045), wires, distibutor cap, rotor button, air filter, fuel filter, and cleaned the IAC. It had a barely noticeable miss before the tune up, that's why I did it. Now, it's pretty horrible.
At idle, it's definitely noticeable, and at cruising speeds (RPM's below 3K) it bucks and surges. The weird part about it is WOT runs are as smooth and (somewhat) powerful as ever! At idle in neutral it will revv up just fine without any hesitation as well.
First thing I did was check the firing order, again and again. Made sure all my wires were properly seated on the plugs and on the distributor prongs. Pulled the plugs back out, they were all clean and properly gapped. I pulled the wires off one by one to try to isolate the misfire, but every plug wire I removed made around the same impact on the motor.
Next I ran codes. KOEO, I got code 95 - fuel pump secondary circuit failure. Don't know what to do about this. Fuel pumps comes on at the turn of the key, relay clicks... KOER, I got 11 (pass code), so nothing there.
Then I hooked a fuel pressure gauge to the schrader valve on the fuel rail, and at idle pressure was a steady 35 PSI. I also removed the vac. line to the FPR while running to see if gas came out. I checked for vac. leaks as well.
Now not sure what to check now. I've checked everything I know to check, but nothing works....
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I have a 1994 chev Blazer S 10. that has thesy troubles. when it warms up it runs high and hot exhaust and ruff idle. with a hot cat. Replaced EGR carbon build up at times.replaced fuel pump, and all the senors under the hood. Still runs the same.
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96 Ranger 2.3 5 speed, 2wd. 212k on the clock.
Bought this from my BIL last week. CEL was on so I ran the codes. replaced the air filter, cleaned the MAF (with CRC MAS cleaner), replaced the EGR solenoid (physically broken). The first code showed this was throwing the code. That code (p1409) went away but p0402 showed it's head. replaced the DPFE sensor, disconnected the battery for an hour and am now code free.
Now it idles like crap, up and down with A/C on or off to nearly dying and does eventually die. Disconnected the MAS and no change. Cleaned the AIC no change, replaced the AIC with no luck. Checked for any obvious vacuum leaks around items I messed with. Found nothing. With engine running I disconnected the vacuum to the EGR valve and idle smooths out. Feel a small vacuum tug from the hose, nothing at the valve.
Haven't changed the PCV or cleaned the throttle body. Could it be the EGR valve since removing the vacuum seemed to work?
Side note, BIL's mechanic told him THREE YEARS AGO the CEL was 'probably a O2 sensor' and that is doesn't do anything and no need to fix.
Still no codes and still no power. Can't hear any vacuum leaks. Bought new plugs and wires but haven't installed them yet. EGR? TPS?
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I only see it on start up, after it starts I don't see blue smoke or smell it could this be valve guide seals? If so are they hard to change? This truck has 168000 miles on it and has a 4.6 engine.
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My ranger has a 3.0 v6 engine it idles high and accelerates on its own sometimes. Sometimes its more often then others. I turn my key about three times thinkin its reseting the computer and stop it and it does. But I keep hitting a dead end and don't know what to do about it.
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My son just purchased a 1996 Ford Ranger 2.3l 5 speed it is a nice little truck. But I have a question when you press in the clutch it acts like the choke has come on it idles way to high. When you come to a complete stop it is a few minutes before it goes back to its regular idle. Is it suppose to do that?
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I'm having a bit of trouble with my fathers '03 Ranger Edge 4.0L. It has about 100k miles on it, and we keep it very well maintained. This is the first major problem we've had with it.
When the problem first occured, it had been driven about 30 miles on the highway and about 5 miles after getting off the highway, he pulled up to an intersection and stopped. As he started accelerating again, it all of a sudden started sputtering, surging (almost exactly as if it were running out of gas), and then stalled. It continues to exhibit this behavior. It will start and idle fine, but struggle and then stall when given any amount of throttle. It's also an automatic transmission if that makes any difference.
Fast forward to this past week after we had it towed home. We have checked the fuel pressure, and its dead on at about 64psi. We changed the fuel filter, changed the PCV valve, changed the upstream O2 sensor, put in a new air filter, cleaned the MAF sensor, and cleaned the intake of the throttle body. We're now at a loss as to what could be causing the problem. The CEL is not on, and there are no codes being shown when we plugged it in. We also thought it may have been bad gas, so we drained the tank and put fresh gas in from our preferred station. The plugs and wires are also fairly new, only about 4k miles on them.
Are we missing anything here? What else we could try? The absolute last resort is taking it to a shop, we're going through a rough patch with finances.
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