Problems after replacing spark plugs and wires. Did these guys know what they were doing to replace the plugs and wires?

Asked by Apr 03, 2012 at 08:50 PM about the 2005 Hyundai Santa Fe GLS 3.5L AWD

Question type: Maintenance & Repair

Had spark plugs and wires (& air filter) replaced for routine maintenance. Shop said they had to remove back of engine(?) to get to wires, then they "couldn't get good compression" and had valves checked at specialty shop. They said, 'no problem'. They kept my car for a week and put it back together saying all is well with no further explanation.  Now my check engine light stays on (until they reset it, then it comes back on after driving short distance.) They tell me the code says it's "misfiring" but that it's not, so they don't know why the light comes on.  Also, now my Cruise Control doesn't work (turns on but won't set).  Could the work they did on engine, plugs, etc have caused this?

2 Answers

3,870

what they had to remove is called the plenum or upper intake to get access to the back bank of spark plugs, also this is where the spark plug wires run under. while its possible that this is the cause( the plug wires are very senistive to position on this engine) i would want to know what codes they are getting before i would condemn their work. i have seen several of these engines with higher miles(over 90k) that usually sey cylinders 1,3 and 5 misfires. codes are p0301,p0303,p0305. usually caused by the exhuast cam timing being off by a tooth. too many times ive seen even experienced mechanics just put the engine back in time and while the problems is gone for now it will return. in my experience this is caused by the hydrulic tensioner bleeding down and letting too much slack in the belt letting the closest cam to the tensioner(exhaust cam on back bank) to jump a tooth or 2. replacement of the tensioner assy is the best fix. of course without knowing the codes they are getting this is only a guess. if you can find out what codes there are it will help greatly

11 of 11 people found this helpful.
3,925

I agree James.

1 of 1 people found this helpful.

Your Answer

Hyundai Santa Fe Experts

  • #1
    me29
    Reputation
    3,940
  • #2
    LouB
    Reputation
    3,800
  • #3
    cargurus55
    Reputation
    1,160
View All

Related Models For Sale

Used Kia Sorento
433 Great Deals out of 34,858 listings starting at $2,480
Used Hyundai Tucson
201 Great Deals out of 21,572 listings starting at $1,650
Used Honda CR-V
719 Great Deals out of 64,359 listings starting at $1,495
Used Toyota Highlander
517 Great Deals out of 43,167 listings starting at $2,500
Used Toyota RAV4
624 Great Deals out of 62,895 listings starting at $1,995
Used Honda Pilot
542 Great Deals out of 37,771 listings starting at $999
Used Hyundai Sonata
552 Great Deals out of 53,359 listings starting at $1,995
Used Ford Explorer
1,018 Great Deals out of 67,538 listings starting at $1,200
Used Ford Escape
1,128 Great Deals out of 107,759 listings starting at $1,000
Used Chevrolet Equinox
1,007 Great Deals out of 78,294 listings starting at $1,843
Used Nissan Murano
419 Great Deals out of 24,594 listings starting at $400
Used Nissan Pathfinder
436 Great Deals out of 22,986 listings starting at $1,988

Used Cars For Sale

2018 Hyundai Santa Fe For Sale
8,537 listings starting at $24,390
2017 Hyundai Santa Fe For Sale
62 Great Deals out of 3,004 listings starting at $15,691
2016 Hyundai Santa Fe For Sale
3 Great Deals out of 294 listings starting at $14,980
2015 Hyundai Santa Fe For Sale
25 Great Deals out of 512 listings starting at $13,995
2014 Hyundai Santa Fe For Sale
29 Great Deals out of 458 listings starting at $12,703

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.