Question about 2004 Ford F150

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Got engine wet now service light on and engine running rough

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  • 57 Answers

Try spraying all wires with a product called wire dry

Posted on Jul 12, 2009


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Posted on Jan 02, 2017

  • 1985 Answers

SOURCE: 1994 GMC Jimmy engine runs rough when cold; smooths out when warm

you need to have the codes checked to know what direction to start repairs,Autozone does this for free

Posted on Jan 20, 2010

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SOURCE: Ford Escape 3L 2002 Rough idle

generally, when the engine is washed, water gets trapped behind the spark unit and stays there, creating a shorting path for spark plug current. best to dis-mount the spark unit (follow plug wires back to source) and dry and clean it thoroughly.

Posted on Jul 07, 2008

  • 184 Answers


You'll need to get the trouble codes read from the truck's computer memory. The Check Engine Light comes on when codes are stored. You can go to an auto parts store and ask if they read them for free, buy a code scanner, or take it to a shop. Without those codes we'd just be guessing at what's wrong ;-)

If you get the codes you can look them up here for more info or post back here -

Posted on Dec 21, 2008

  • 15 Answers

SOURCE: 2002 grand prix runs rough,dies service engine

sounds like you have a vacuum leak, check all the vacuum hoses and replace any broken or kinked ones, also check around the intake manifold gasket for leaks. any air leaks after the air flow meter creates 'un-metered' air which inturn will make the car run rough and stall, hope this helps

Posted on Apr 04, 2009

  • 218 Answers

SOURCE: running rough/service engine soon light


Posted on May 04, 2009

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Check the ignition system, coil/s, plug wires or boots. Easiest way to find the problem is to take a spray bottle with water and spray them down when the truck is running. When it runs rough, you found the problem.

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you could have just been spraying the engine with coolant and got a spark plug wire wet or something. if you take your car to autozone they will do a free code read on it and that will tell you what is wrong. if it just says misfire then probably just a wet plug wire or something. but you can have them erase the code. then see if it comes back on. if it does then you likely have a problem.

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If you have this problem its possible you got water in the main harness conector on the top middle firewall. I used a hairdryer and put some silicone on mine to help. Also, the coils on the sparkplugs and the rubber around the spark plug can easily fill with water so check all plugs and holes.

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2 Answers

Ford Escape 3L 2002 Rough idle

generally, when the engine is washed, water gets trapped behind the spark unit and stays there, creating a shorting path for spark plug current. best to dis-mount the spark unit (follow plug wires back to source) and dry and clean it thoroughly.

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