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Check Engine Light?

Tiny
CATHORSE
  • MEMBER
  • 2001 FORD RANGER
2001 Ford Ranger, 4.0L V6 engine, 68,000 miles - Check engine light went on and the store said it was Fuel too lean - mixture bank 1 & 2. When you start the car it hesitates and sounds like it is going up and down like to fuel is not getting there. Once it runs for a few minutes it runs fine, but begins again when you start the vehilce. I replaced the fuel filter, still happens.
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Monday, March 5th, 2007 AT 12:12 PM

34 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
We need to code number which can be done by using this guide.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
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Monday, March 5th, 2007 AT 4:22 PM
Tiny
SILVERSAND01
  • MEMBER
  • 2 POSTS
  • 2001 FORD RANGER
  • 4 CYL
  • 2WD
  • MANUAL
  • 147,000 MILES
My Check Engine Light ( MIL ) comes on and when I check with a reader I am getting 0304 and sometimes 0402 as a second code. The truck starts fine but dies if I am accelerating and come to a stop until it warms up. The engine is misfiring and sluggish until hot and then runs pretty normally ( still backfires when accelerating uphill. The Haynes manuals say the 0304 is cylinder 4 misfire and 0402 is excess exhaust gas recirc excess pressure. I clear the MIL but within 20 mins it is back on. HELP!
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
A misfire you need to check it for tune up
check the spark plugs and wires
check EGR remove clean and check DPFE too
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
SILVERSAND01
  • MEMBER
  • 2 POSTS
Thanks / Replaced plugs and wires as a first try to no avail. Will try the EGR next.
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Also check the coil if firing #4 cyl
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
TGRIMSLEY
  • MEMBER
  • 1 POST
  • 2001 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 70,005 MILES
Engine running rough, poor excelleration up hill, poor gas mileage, had a smell like sulfur odor when first started. Check engine light is on.
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
Sounds like a bad convertor plogging the exhaust system, get the check engine light scanned to see if it confirms what I belive or if there is another problem.
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
GUERNSEY
  • MEMBER
  • 1 POST
  • 2001 FORD RANGER
Engine Mechanical problem
2001 Ford Ranger 6 cyl Four Wheel Drive Automatic 115k miles

runs fine going down the road but wants to idle at 500rpm or less. Very rough idle check engine light is on.
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
RENAUDTN
  • MECHANIC
  • 636 POSTS
Take it to your local auto part store and have them retrieve the trouble codes (DTC). When you have the code(s), post back and we'll start from there. Some stores do it for free (autozone, o'reilly)
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
JXM3181
  • MEMBER
  • 1 POST
  • 2001 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 57,000 MILES
The CHECK ENGINE light came on and does not go out. I replaced both oxygen sensors but the llight remains. What are other possible causes for the light to stasy on?
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
FLEXY5
  • MECHANIC
  • 512 POSTS
Are you getting P0171, P0174 codes? If so look for a vacuum leak. Check all vacuum hoses as well as the intake manifold gaskets. Pay close attention to the PCV hose as they tend to deteriorate. If you need more help, let me know.
Dave
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
FORD34
  • MEMBER
  • 1 POST
  • 2001 FORD RANGER
Engine Performance problem
2001 Ford Ranger 6 cyl Two Wheel Drive Automatic

it jumps when you give it gas and after you drive it for a while it runs loud. I have changed the fuel filter, spark plugs and wires and air filter. The check engine light comes on.L
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
If the check engine light comes on, that means there is a trouble code stored. Take the truck to a nationally recognized parts store and have them scan the computer for codes. Most will do it for free, and then you'll know where the problem is coming from.
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
SHEL0812
  • MEMBER
  • 1 POST
  • 2001 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 91,000 MILES
Engine light comes on running rough have replaced the ignition coil and spark plugs and wires. When put on the tester it said it was miss firing on 1 and 2 cylinders
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Check to make sure the injectors are working properly. Check fuel pump pressure. If they are good and you tuned it up already, check cylinders for compression.
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Friday, November 27th, 2020 AT 10:07 AM (Merged)
Tiny
AIRFRAMER73
  • MEMBER
  • 2 POSTS
  • 2001 FORD RANGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 94,000 MILES
My check gauge light comes on for just a second when stepping on the accelerator, also engine will sputter and backfire when accelerating. Can someone tell me exactly what the problem is without too much trial and error? And before I have to tell my WIFE.
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Friday, November 27th, 2020 AT 10:08 AM (Merged)
Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
Hi check guages light will be on when a guage is not reading properly. As in low oil pressure low fuel low amps. Have the alternator tested low voltage could be a possibility. If you want to heck these things an get back with me, I will try and help thanks billymac
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Friday, November 27th, 2020 AT 10:08 AM (Merged)
Tiny
AIRFRAMER73
  • MEMBER
  • 2 POSTS
Billymac, thanks for the reply. I checked the alternater and it is good to go. To me it seems like it may be fuel related. Fuel filter or fuel pump? To me, it makes sense that the "check gauge" light would come on if it thinks that I'm running out of gas. Hense the bad fuel filter or fuel pump. What do you think? Oh, and now the check engine light has come on and stays on. It is still sputters on acceleration. It won't do it all the time though. Do you think it could be a cylinder or 2 missfiring?
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Friday, November 27th, 2020 AT 10:08 AM (Merged)
Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
Hi well it certainly could be fuel related, as far as the sputter but the check guage is only for the gauges. It may be an erronous malfuntion. The check eng light you need to get the codes and go from their. I would tune up and new fuel filter and see if it helps. Let me know billymac
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Friday, November 27th, 2020 AT 10:08 AM (Merged)
Tiny
MATTHEWCECIL
  • MEMBER
  • 1 POST
  • 2001 FORD RANGER
  • 150,000 MILES
I have a 2001 ford ranger. I just recently purchased it, and I thought I'd do a tune up on it so I did. I put new wires&plugs and now when I drive in town my check engine light comes on, it shows code p306, to which I know to be a #6 cylinder mis-fire, I've chanded the plug&wire 2times now& I still get the same code. If I clear the code& drive it on the high-way the light never comes on, but in town it will. The size of my motor is a 3.0L, do you have any idea what it might be?
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Friday, November 27th, 2020 AT 10:08 AM (Merged)

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