Will a defective PCM cause a misfire on one cylinder

Asked by Oct 24, 2016 at 09:35 PM about the 2001 Jeep Grand Cherokee Limited 4WD

Question type: Maintenance & Repair

have new coil and new plug and have already tried rotating and it works on all other cylinders

3 Answers

70,205

If PCM is bad it would give a random misfire,check the compression on the cylinder that is not firing,may have bad valve on it.

I have already pulled the new coil and put a new plug in it and grounded it and then started the engine...but no fire to the plug from the coil...could that still mean possablility of a low compression problem? If low compression can cause the coil not to fire, I will run a compression check in the morning if you still think so

70,205

No,if you do not have fire at that plug,there is a issue,may be bad spark plug wire,

Your Answer

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 72,505 nationwide Grand Cherokee listings starting at $1,195.

ZIP:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,150
  • #2
    Tom Demyan
    Reputation
    1,970
  • #3
    thejeepdoctor
    Reputation
    1,960
View All

Related Models For Sale

Used Jeep Cherokee
528 Great Deals out of 61,347 listings starting at $3,995
Used Dodge Durango
373 Great Deals out of 24,222 listings starting at $1,500
Used Ford Explorer
1,245 Great Deals out of 69,540 listings starting at $1,000
Used Toyota 4Runner
335 Great Deals out of 26,794 listings starting at $1,800
Used Jeep Wrangler
501 Great Deals out of 19,436 listings starting at $2,500
Used Chevrolet Tahoe
808 Great Deals out of 42,075 listings starting at $1,987
Used Ford F-150
3,335 Great Deals out of 221,729 listings starting at $1,200
Used Chevrolet Silverado 1500
2,708 Great Deals out of 174,515 listings starting at $955
Used BMW X5
364 Great Deals out of 15,886 listings starting at $3,300
Used Ford Mustang
603 Great Deals out of 39,399 listings starting at $1,895
Used Honda Accord
1,127 Great Deals out of 73,672 listings starting at $1,100

Used Cars For Sale

2018 Jeep Grand Cherokee Limited 4WD For Sale
10,049 listings starting at $31,486
2017 Jeep Grand Cherokee Limited 4WD For Sale
56 Great Deals out of 3,374 listings starting at $28,816
2016 Jeep Grand Cherokee Limited 4WD For Sale
27 Great Deals out of 685 listings starting at $24,195
2015 Jeep Grand Cherokee Limited 4WD For Sale
92 Great Deals out of 2,748 listings starting at $19,995
2014 Jeep Grand Cherokee Limited 4WD For Sale
78 Great Deals out of 2,143 listings starting at $13,890

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.