2003 Jeep Liberty 3.7L V6 Check Engine Light

Asked by Jul 15, 2017 at 06:05 PM about the 2003 Jeep Liberty Renegade

Question type: Maintenance & Repair

I checked the the engine light codes on my 2003 Jeep Liberty 3.7L V6,
because vehicle was jerking, by turning ignition on/off 3 times without
starting and P code 0305 displayed (firing order number 5 was not working
so i took coil off while vehicle was running and no change).  So it had been a
while since I changed all my spark plugs and coils so I did that.  Jeep ran
good for about 100 miles the light came on and vehicle began to jerk again.  
So I took it to Autozone and they asked me did I have the check engine reset
after installing plugs and coils. I said no, so they went out and reset the
engine light and the misfire went away.  So is it standard procedure to reset
check engine light after installing parts causing vehicle to misfire?

2 Answers

275,215

Not how it should work. The CEL should not have come back on after the repair if that is what it was, like a plug or coil in your case. If it did come back on, you have another issue. The fuel injector on the cylinder might be the issue, etc. Read this as probably causes, there are more than a few....https://www.obd-codes.com/p0305

My 2003 jeep liberty goes into limp mode after 100 miles as well. It shows a random misfire code but when I restart the car it runs great for another 100 miles. I have replaced the plugs, coils, and Engine control module. It continues to do the same thing goes into limp mode every 100 miles. I am in the process of replacing the 4 oxygen sensors and if that does not work I may replace the full injectors. Any other solutions are greatly appreciated.

Your Answer

Jeep Liberty Experts

  • #1
    fixmyjeep
    Reputation
    1,520
  • #2
    rst429
    Reputation
    1,260
  • #3
    Tom Demyan
    Reputation
    1,240
View All

Related Models For Sale

Used Jeep Grand Cherokee
888 Great Deals out of 71,568 listings starting at $900
Used Jeep Wrangler
366 Great Deals out of 20,466 listings starting at $2,500
Used Ford Escape
1,166 Great Deals out of 106,832 listings starting at $700
Used Honda CR-V
714 Great Deals out of 62,187 listings starting at $1,495
Used Toyota RAV4
633 Great Deals out of 61,513 listings starting at $1,995
Used Ford Explorer
1,082 Great Deals out of 67,959 listings starting at $1,500
Used Ford F-150
3,016 Great Deals out of 230,442 listings starting at $1,300

Used Cars For Sale

2012 Jeep Liberty For Sale
41 Great Deals out of 1,314 listings starting at $5,900
2011 Jeep Liberty For Sale
21 Great Deals out of 649 listings starting at $3,999
2010 Jeep Liberty For Sale
16 Great Deals out of 594 listings starting at $4,990
2009 Jeep Liberty For Sale
6 Great Deals out of 298 listings starting at $3,350
2008 Jeep Liberty For Sale
15 Great Deals out of 908 listings starting at $3,573

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.