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  1. #1
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    Default 2012 Sahara Reliability

    I'm looking at changing in my Pajero for a 2012/2013 Jeep Wrangler 3.6.

    Anything specific to look out for and known problems with the jeeps?
    My Youtube Channel
    04 Mitsubishi Pajero 3.8 V6 SWB
    63mm freeflow and Rocksliders from PEPA customs
    MAXE Nudge bar with Warn Spotlights
    Front and rear bash plates
    Stofpad lift spacers
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  2. #2
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    Default Re: 2012 Sahara Reliability

    After seven years ownership of 3.6 Sahara had not a single issue. Some will say 12/13 had issues with cylinder heads due to sand from manufacturing casting. This was only a few of the many thousands made during that time and Jeep covering repair for 10 years from date of manufacture. IMO if there was a problem you would pick it up quite early in Jeepís life.

    Make VERY sure correct antifreeze has been used. Lots of confusion with 12/13 3.6 Wranglers between HOAT and OAT. Mix the two and coolant turns to jelly 😭

    Some will say Rubicon is better ....... depends on how rough off roading you mostly do. Never been stuck in my Sahara despite tackling some serious obstacles.

    Fuel economy around town is quite heavy, but again IMO stay away from the diesel CRD Wrangler.....

    Look closely under vehicle for off-road damage, some owners push the Jeep beyond THEIR capabilities 😳

    Donít ďover payĒ for mods already fitted....what looks great is not always the most suitable for your use.....huge tyres = huge fuel consumption just for a few millimeters in ground clearance. Equally a six inch suspension lift is a pig around town.

    Stay safe.

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  4. #3
    Join Date
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    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by Andrepb View Post
    After seven years ownership of 3.6 Sahara had not a single issue. Some will say 12/13 had issues with cylinder heads due to sand from manufacturing casting. This was only a few of the many thousands made during that time and Jeep covering repair for 10 years from date of manufacture. IMO if there was a problem you would pick it up quite early in Jeepís life.

    Make VERY sure correct antifreeze has been used. Lots of confusion with 12/13 3.6 Wranglers between HOAT and OAT. Mix the two and coolant turns to jelly 😭

    Some will say Rubicon is better ....... depends on how rough off roading you mostly do. Never been stuck in my Sahara despite tackling some serious obstacles.

    Fuel economy around town is quite heavy, but again IMO stay away from the diesel CRD Wrangler.....

    Look closely under vehicle for off-road damage, some owners push the Jeep beyond THEIR capabilities 😳

    Donít ďover payĒ for mods already fitted....what looks great is not always the most suitable for your use.....huge tyres = huge fuel consumption just for a few millimeters in ground clearance. Equally a six inch suspension lift is a pig around town.

    Stay safe.
    Thanks for the info, coming from a 3.8 Pajero, thirst is not something I'm new to
    My Youtube Channel
    04 Mitsubishi Pajero 3.8 V6 SWB
    63mm freeflow and Rocksliders from PEPA customs
    MAXE Nudge bar with Warn Spotlights
    Front and rear bash plates
    Stofpad lift spacers
    265/65R17 Pirelli Scorpion AT+

  5. #4
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    Nov 2007
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    Default Re: 2012 Sahara Reliability

    Like all vehicles look at the vehicles service history and a closelook underneath will show any abuse. I'm on my 2nd wrangler and after 110 000k repairs done have included, rad exp bottle crack (common problem) A water pump replacement and an air cond. compressor. Mods on my veh are slight with 2.5 inch lift, and 33" Tyres

  6. #5
    Join Date
    Mar 2008
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    De Wildt
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    Default Re: 2012 Sahara Reliability

    2012 JKUS, 270,000kms.

    Faults to date:
    - radiator top tank split, replaced under warranty
    - crank position sensor harness repaired under warranty (known issue, later models had a modified harness)
    - front seats looked ratty after 200,000kms, fixed at local upholsterer
    - cats were blocked by 250,000kms, they have been removed and the ECU remapped

    Apart from that, only fair wear and tear: shocks, bushes, tyres, wiper blades.
    The rear hatch hinges are now pretty much shagged.
    Still on the original exhaust.

    Standard fuel consumption: 10.5 - 12.5 L/100 depending on traffic, speed, and driving style. If you live in town, with heavy traffic, maybe closer to 13.5L/100, but still less than the Paj and much more power.

    Engine and auto box are a peach of a combo.

    FSH at dealer and at ex-dealer indie.

    Oh yes: the stock jack is rubbish. Get a 6T bottle jack.
    Jakes Louw
    2012 Jeep Sahara Unlimited 3.6 V6
    Percivamus

  7. #6
    Join Date
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    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by jelo View Post
    2012 JKUS, 270,000kms.

    Faults to date:
    - radiator top tank split, replaced under warranty
    - crank position sensor harness repaired under warranty (known issue, later models had a modified harness)
    - front seats looked ratty after 200,000kms, fixed at local upholsterer
    - cats were blocked by 250,000kms, they have been removed and the ECU remapped

    Apart from that, only fair wear and tear: shocks, bushes, tyres, wiper blades.
    The rear hatch hinges are now pretty much shagged.
    Still on the original exhaust.

    Standard fuel consumption: 10.5 - 12.5 L/100 depending on traffic, speed, and driving style. If you live in town, with heavy traffic, maybe closer to 13.5L/100, but still less than the Paj and much more power.

    Engine and auto box are a peach of a combo.

    FSH at dealer and at ex-dealer indie.

    Oh yes: the stock jack is rubbish. Get a 6T bottle jack.
    Who removed your Cats? And also how does it sound now? I heard to remove cats on the 3.6 is not recommended, since it bolts directly to the engine

  8. #7
    Join Date
    Mar 2008
    Location
    De Wildt
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    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by Daily Driven Jeeps View Post
    Who removed your Cats? And also how does it sound now? I heard to remove cats on the 3.6 is not recommended, since it bolts directly to the engine
    Eben from ESJ repairs.

    Slight rasp on acceleration, nothing obtrusive.

    Dropped fuel consumption by at least 1L/100.........

    No codes or MIL. ECU is happy. In fact, I can't believe this engine has that mileage on it.
    Jakes Louw
    2012 Jeep Sahara Unlimited 3.6 V6
    Percivamus

  9. #8
    Join Date
    Apr 2021
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    Centurion
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    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by jelo View Post
    Eben from ESJ repairs.

    Slight rasp on acceleration, nothing obtrusive.

    Dropped fuel consumption by at least 1L/100.........

    No codes or MIL. ECU is happy. In fact, I can't believe this engine has that mileage on it.
    Thanks, also looking into it, as I can smell my CATS on startup lately, not bad yet.

  10. #9
    Join Date
    Mar 2008
    Location
    De Wildt
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    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by Daily Driven Jeeps View Post
    Thanks, also looking into it, as I can smell my CATS on startup lately, not bad yet.
    Ours were so bad that we started getting codes and excessive heat build-up.
    Jakes Louw
    2012 Jeep Sahara Unlimited 3.6 V6
    Percivamus

  11. #10
    Join Date
    Apr 2013
    Location
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    Default Re: 2012 Sahara Reliability

    Zone removed my cats, with no ill effect afterwards.
    Zone Built JEEP 018
    ORRA AG42
    2013 Jeep JK Rubicon

  12. #11
    Join Date
    Apr 2021
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    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by Jeepanator View Post
    Zone removed my cats, with no ill effect afterwards.
    What did they charge?

  13. #12
    Join Date
    May 2013
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    Klerksdorp
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    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by jelo View Post
    2012 JKUS, 270,000kms.

    Faults to date:
    - radiator top tank split, replaced under warranty
    - crank position sensor harness repaired under warranty (known issue, later models had a modified harness)
    - front seats looked ratty after 200,000kms, fixed at local upholsterer
    - cats were blocked by 250,000kms, they have been removed and the ECU remapped

    Apart from that, only fair wear and tear: shocks, bushes, tyres, wiper blades.
    The rear hatch hinges are now pretty much shagged.
    Still on the original exhaust.

    Standard fuel consumption: 10.5 - 12.5 L/100 depending on traffic, speed, and driving style. If you live in town, with heavy traffic, maybe closer to 13.5L/100, but still less than the Paj and much more power.

    Engine and auto box are a peach of a combo.

    FSH at dealer and at ex-dealer indie.

    Oh yes: the stock jack is rubbish. Get a 6T bottle jack.
    Good to know
    My Youtube Channel
    04 Mitsubishi Pajero 3.8 V6 SWB
    63mm freeflow and Rocksliders from PEPA customs
    MAXE Nudge bar with Warn Spotlights
    Front and rear bash plates
    Stofpad lift spacers
    265/65R17 Pirelli Scorpion AT+

  14. #13
    Join Date
    Apr 2013
    Location
    Randburg
    Age
    43
    Posts
    2,021
    Thanked: 106

    Default Re: 2012 Sahara Reliability

    Quote Originally Posted by Daily Driven Jeeps View Post
    What did they charge?
    Sorry can't remember it's 2 years ago.
    Zone Built JEEP 018
    ORRA AG42
    2013 Jeep JK Rubicon

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