Check engine light

Tiny
BMRFIXIT
  • EXPERT
It is an emission related issue
if u cycle ignition key on off on off on with in 10 sec
you should have P codes in the odometer area
u can post them for more help

need manual CHECK IT @
https://www.2carpros.com/kpages/auto_repair_manuals.htm
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
GRUSZECZKA
  • MEMBER
  • 2001 JEEP CHEROKEE
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 75,637 MILES
3 weeks go the "check engine light" on my Jeep went on. The retrieved code was P0303 - cylinder 3 misfire detected. The spark plugs and ignition coil assembly were replaced. Yesterday after I came out of the grocery store I started the car and stepped on the gas, when I put the car in drive, the car started forward then I felt a slow down in power and had to apply more pressure to the gas pedal. The "check engine light" immediately went on. When my mechanic checked the code he said it did not make any sense as the system read that the problem occurred while the car was turned off? Because the code made no sense, he said it would be difficult if not expensive to try to detect the problem. He said he would reset/turn off the light and that I should bring it in the next time this happens. Obviously something is wrong because I felt it and I am now concerned about driving the car. I asked him to recheck the work they did 3 weeks ago. Any other suggestions.
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
MHPAUTOS
  • EXPERT
Hi there,

I would do the same, do a re set and clear any codes, if the check light comes on then get a scan, there may be a problem with in the ECU, these can be tested by a specialist repairer, do the re set first and see how you go.

Mark (mhpautos)
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
NADYER
  • MEMBER
  • 2001 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
I have a 2001 Jeep Cherokee sport. The battery gauge swings from low to mid and my 'check gauge' light periodically comes on, then goes off. I don't know if it's related but my autostart won't keep the engine running: once it successfully starts, it shuts off, then starts again. Can't be awesome for the starter.
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
RONLOS
  • MEMBER
  • 2001 JEEP CHEROKEE
I have a 2001 Jeep Grand Cherokee. 137,000 miles 4.0 liter enging.

The check engine came on and the engine started to idle rough (as if there was a constant miss fire). As I accelerated it was jumpy and rough and the check enging light started to flash. As I got to speed and stayed at a constant speed it smoothed out but when I accelerated it started again.

Could this be a wiring harness problem since it has never been replaced or could it be something else.
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
JIMGUMP
  • MEMBER
After Thanksgiving dinner, started driving home. Halfway home, car sarted to shake terribly. Since I was only a mile from home, I slowed down and drove home. There was smoke coming from the rear center of the car, probably from the rear axle. What's up?
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
BMRFIXIT
  • EXPERT
IS IT TIME FOR tune up
change spark plugs
also check the codes
and let me know
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
BMRFIXIT
  • EXPERT
U propably need a head gasket
did it overheat
let me know
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
JEEPOWNER
  • MEMBER
  • 2001 JEEP CHEROKEE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 14,000 MILES
Hi -

Yesterday on my way home from work, my "check gague" ligth came on & then my temperature gague suddenly went all the way to hot. I drove it home 25 miles. As I was almost home, the light went off and the temperature went to normal. This morning, on my way into work it suddenly went to hot again. Half-way to work, the gague went back to normal reading.

I checked the coolant & the reservoir was completely empty. The mechanic checked for leaks & could not find one. He is giving the car a flush and new cooant put in. The check engine light did come on after I got to my office and recranked it to take it around the corner to the mechanic.

My question for now is: What kind of damage, if any would the engine have endured from me driving it that way for 50 or so miles? I have put close to $4,000 into repairs in the past year. I need to decide whether or not I need to start looking for a new vehicle.

Thanks!
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
The coolant had to go somewhere if no leaks then internal leak into the cumbustion chamber by headgasket failure. Have the shop pressure test system to help find leak tell them to pull spark plugs to check for coolant entering engine. This should answer your question about possible damage.
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Saturday, November 23rd, 2019 AT 2:08 PM (Merged)

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