DIAGNOSE ENGINE MISS

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6 messages, Last post on Aug 06, 2010 at 11:19 AM

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#1 of 6 DIAGNOSE ENGINE MISS by rwood22

Aug 04, 2010 (7:55 pm)

My 2002 Lincoln LS V8 has developed a miss
or hesitation when accelerating from 40-55 MPH.
No hesitation prior to 40 MPH or upon reaching
full cruising speed > 60 MPH. This hesitation or miss is accentuated when going up a hill. Seems like an electrical issue to me....initially I thought spark plug wires....only as I found out upon lifting the hood to investigate....there are no spark plug wires. Could this issue be spark plug coils? Or possibly something other than an electrical issue
...perhaps a tourque converter problem? Would like some feedback before I resort to taking it in to he dealer. Appreciate any comments. Thanks!

Replies to this message:

akirby (Aug 05, 2010 5:54 am)
toomanyfumes (Aug 06, 2010 5:24 am)
- akirby (Aug 06, 2010 6:01 am)
  - toomanyfumes (Aug 06, 2010 10:30 am) and 1 more...

#2 of 6 Re: DIAGNOSE ENGINE MISS [rwood22] by akirby

Aug 05, 2010 (5:54 am)

Replying to: rwood22 (Aug 04, 2010 7:55 pm)

Almost guaranteed to be the COPs (coil on plug). A good mechanic can load test them to be sure. If some are bad go ahead and replace all of them.

Second choice would be fuel filter/fuel pump.