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Old 09-04-2010, 06:47 PM   #1
Join Date: Jul 2010
Location: Orange Park, Florida
Posts: 50
Spark Plug Change in 4-Banger with A/C

Hey Kids:

99 Wrangler 2.5 with A/C. Need to change the plugs.

Is a special tool needed to pull the boot on the front plug without buggering it, and will a ratchet with a u-joint and extension get around the A/C compressor?



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Old 09-04-2010, 06:58 PM   #2
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Join Date: Feb 2010
Location: backroads of the Mojave
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I'm not sure about the 4 cyl. but when I changed my '99 6 cyl. plugs a wobble socket extension definitely helped get to the harder to reach plugs (as I recall, yes the a/c compressor made access more difficult). The wobble socket extension allows a little rotational play of the socket so you don't need an exact straight shot. I got it at Harbor Freight for a couple of bucks (hey, it worked).

And I would go ahead and put new wires on while you're at it. There's always a chance you're gonna jack one removing it.

. . . . picking the lines with my twenty-nines . . . .

'99 sport 4.0 5 speed, top-of-the-line floormats
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Old 09-04-2010, 08:26 PM   #3
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Location: Maine
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in my 4 cyl i didn't have A/C but where the compressor would be, probably would make getting to that plug a real pia. i think you may have to remove the compressor...
'04 tj, d44s & arb's
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Old 09-04-2010, 08:47 PM   #4
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97 TJ 2.5, I had to pull the compressor. 4 bolts, you can leave the belt on and slide it over. If you use an air wrench it takes just a couple min.
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Old 09-05-2010, 02:08 PM   #5
Join Date: Jul 2010
Location: Orange Park, Florida
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Renewed the plugs and wires, will do the coil, distributor cap and rotor in the next few weeks. No problem getting around the A/C compressor with a u-joint extension. Made damn sure the plugs were not cross threaded with the plug socket turned by hand only, then popped on the extension and finished.

Runs better, old wires had some deterioration in the insulation around the #2 plug.

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