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High Idle while cruising

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Old Aug 8, 2010 | 12:28 AM
  #1  
pbtrilogy's Avatar
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Joined: Jul 2009
Posts: 156
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From: Greenville, NC
Car: 1985 Z
Engine: 89 305 TPI
Transmission: 700-R4
Axle/Gears: OSD 10 bolt/ 3.42
High Idle while cruising

Today i got on the highway(I-95) for the 1st time since ive had the car. The speed limit was 65 and 70 so i was ranging anywhere between 66 and 75.

My rpm's stayed right up around 4000 - 4800 rpm while cruising.

This seems like it is to high of a cruising rpm, so what should i fix to bring it down while on the highway.

-Thanks
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Old Oct 3, 2010 | 03:59 AM
  #2  
ryegrass's Avatar
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Joined: Sep 2009
Posts: 25
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Car: 1987 IROC
Engine: 5.7L TPI
Re: High Idle while cruising

It sounds like your transmission is not shifting properly or going in to overdrive.
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