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post #1 of 6 (permalink) Old 07-10-10, 03:47 PM Thread Starter
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98 gt misfire

I felt a miss in my 98 gt about a week ago and i replaced the plugs with platinum plugs, I didn't feel any more misses for about 5 days when it would only seem to do it on the first start up in the morning when its cold outside and the engine is cold and I don't feel it as much when its warmer outside.

the miss is on cylinder 5&6 if that matters....

I wanted to take it to myrtle beach at the end of the month so i'd like to get it fixed asap

it does not throw a code for a misfire but i have a reader that tells me everything the car computer records.
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post #2 of 6 (permalink) Old 07-10-10, 05:54 PM
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Re: 98 gt misfire

Very possible the coil packs or boots are the problem. What engine is it?

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post #3 of 6 (permalink) Old 07-10-10, 08:03 PM Thread Starter
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Re: 98 gt misfire

4.6 135k 5speed all stock
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post #4 of 6 (permalink) Old 07-10-10, 08:42 PM
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Re: 98 gt misfire

Look at the boots on the coil packs. If they look okay, you could try switching the coils and see if the misfire moves with it.

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post #5 of 6 (permalink) Old 07-11-10, 10:44 AM Thread Starter
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Re: 98 gt misfire

could it be caused by low engine speed? 45 in 4th gear is ~1800 rpm
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post #6 of 6 (permalink) Old 07-11-10, 01:55 PM
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Re: 98 gt misfire

Quote:
Originally Posted by 98mustangmatt View Post
could it be caused by low engine speed? 45 in 4th gear is ~1800 rpm
Very doubtful. Check those boots and switch the coil packs.

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