Mustang Boards - RPMs up and down

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1sgranger75

09-11-2011 02:36 PM

RPMs up and down

While driving on the freeway the other day. I noticed every few seconds te rpms would go up by a couple of hundred, the they would drop back down. Is it the overdrive or converter? And what could be the cause of this, it's really annoying. Thanks for all of your help.:(

cdjnight

09-15-2011 07:19 PM

more details needed on your car, year and mods?

1sgranger75

09-18-2011 05:34 PM

rpms up and down

Yes I should have added that to my 1st post. It's a 1996 4.6 GT all stock except for flowmasters.

1sgranger75

09-18-2011 05:36 PM

I shouls also add that it's always shifted rather hard. And it does shudder somewhat when going to overdrive or converter lockup.

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