# 2008 Mercury Mariner - worth fixing?

**URL:** <https://community.cartalk.com/t/2008-mercury-mariner-worth-fixing/157414>\
**Category:** Maintenance/Repairs\
**Tags:** mercury, mariner\
**Created:** [January 27, 2020, 8:40pm UTC](https://community.cartalk.com/t/2008-mercury-mariner-worth-fixing/157414 "2020-01-27T20:40:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![KyleWatson](https://avatars.discourse-cdn.com/v4/letter/k/3bc359/32.png) [@KyleWatson](https://community.cartalk.com/u/KyleWatson)\
**Post date:** [January 27, 2020, 8:40pm UTC](https://community.cartalk.com/t/2008-mercury-mariner-worth-fixing/157414/1 "2020-01-27T20:40:52Z")

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I have a problem that has been going on for about 8 months. The check engine light will go on indicating a misfire on a couple of cylinders. I’ve had coil plugs changed and the problem looked at 4 or 5 times. About $500+ in. Each time the check engine light it “reset” but the same error code comes up again and in the same loop. I’m putting about 1200 miles a month on the car still. The car does start up a little choppy, but after it warms up about 2 mins it runs fine. Not sure if this is worth fixing? Should I replace the PCM? A Little lost. One mechanic told me I needed an engine rebuild.

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**Author:** ![Triedaq](https://avatars.discourse-cdn.com/v4/letter/t/65b543/32.png) [@Triedaq](https://community.cartalk.com/u/Triedaq)\
**Post date:** [January 28, 2020, 2:12pm UTC](https://community.cartalk.com/t/2008-mercury-mariner-worth-fixing/157414/2 "2020-01-28T14:12:07Z")

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One possibility is that coolant is getting into one or more of the cylinders. This would explain the misfire when the engine is first started after sitting overnight. I had this problem with a Ford Aerostar. The problem was a hairline crack in a cylinder head. Fortunately, the Aerostar was under warranty and Ford replaced the engine

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**Author:** ![shadowfax](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shadowfax/32/13026_2.png) [@shadowfax](https://community.cartalk.com/u/shadowfax)\
**Post date:** [January 28, 2020, 2:14pm UTC](https://community.cartalk.com/t/2008-mercury-mariner-worth-fixing/157414/3 "2020-01-28T14:14:27Z")

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And since this one’s out of warranty, it’s not worth fixing if that’s the case. Actually it’s probably not worth fixing at all. The Mariner is a re-badged Escape, and the Escape isn’t great now, but that generation was godawful. I’d be thinking long and hard about putting the repair money toward a different vehicle instead.

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [January 28, 2020, 2:36pm UTC](https://community.cartalk.com/t/2008-mercury-mariner-worth-fixing/157414/4 "2020-01-28T14:36:27Z")

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You can double check your vehicle value on Kelley Blue Book but in my area even a 2008 Mariner in good condition might only be worth 2000.00 . So I say just drive it until it dies or trade it for something else.