| | engine rpm at highway speeds |  |
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+3Olds Weighty Eight jayoldschool green96 7 posters |
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green96
Posts : 7
Join date : 2012-11-25
| Subject: engine rpm at highway speeds  Sun Nov 25, 2012 2:06 pm | |
| i got i 92 roadmaster sedan i bought the car with a bad trans got a rebuilt 700r4 and put it in when im driving round 60mph the rpms is around 3500 thats seems a little high from what im used to seeing in cars is that normal of what everyone else is running | |
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jayoldschool
Posts : 2728
Join date : 2009-06-14
| | Subject: Re: engine rpm at highway speeds Sun Nov 25, 2012 2:20 pm | |
| Your 92 with the 350 and no trailer pack (2.73 gears) should be at about 1800 at 60. It's not going into OD (or lockup, I'll guess). With trailer pack (3.23s if I'm not mistaken), you would be about 2100. You can double check the RPM by going into the HVAC diagnostics (to confirm that the problem isn't simply the tach). | |
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Olds Weighty Eight
Posts : 1061
Join date : 2011-05-15
Age : 57
Location : Memphis, TN
| | Subject: Re: engine rpm at highway speeds Sun Nov 25, 2012 4:14 pm | |
| When cruising at 60, pull the shifter from OD to D. Does it downshift? If not, it's not going to OD as mentioned. Could be that the rebuilt transmission is calibrated for a different rear gear/tire size combo. | |
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95BRMW
Posts : 1695
Join date : 2009-08-15
Age : 40
Location : Connecticut
| | Subject: Re: engine rpm at highway speeds Sun Nov 25, 2012 6:05 pm | |
| +1 on Jay's suggestion of the tach being off. My old 91's tach was off, and the higher the RPM the worse it was. | |
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Guest
Guest
| | Subject: Re: engine rpm at highway speeds Sun Nov 25, 2012 6:24 pm | |
| My tach was fine until I replaced the ignition module while doing a tuneup.Kinda funny watching the tach shifting at 6500rpms when I
stomp my gutless wagon.Figure I would beat someone to it! |
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green96
Posts : 7
Join date : 2012-11-25
| | Subject: Re: engine rpm at highway speeds Tue Nov 27, 2012 10:59 am | |
| how do i get into the hvac diagnostics but it could be then trans cause the place i got it from they keep trans in stock so all i did was give them my old and get a new off the shelf unit | |
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Guest
Guest
| | Subject: Re: engine rpm at highway speeds Tue Nov 27, 2012 11:19 am | |
| Sounds like your trans is still in second gear if you're turning 3500 rpms at 60! |
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scoffman
Posts : 555
Join date : 2012-02-21
Age : 47
Location : Lawrenceburg, KY
| | Subject: Re: engine rpm at highway speeds Tue Nov 27, 2012 11:40 am | |
| Could the tv cable be out of adjustment? If the tv cable is not adjusted correctly then the transmission will not shift correctly, eventually resulting in your new transmission failing early. | |
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green96
Posts : 7
Join date : 2012-11-25
| | Subject: Re: engine rpm at highway speeds Wed Nov 28, 2012 9:43 am | |
| - scoffman wrote:
- Could the tv cable be out of adjustment? If the tv cable is not adjusted correctly then the transmission will not shift correctly, eventually resulting in your new transmission failing early.
is it difficult to adjust the tv cable | |
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Fred Kiehl
Posts : 7283
Join date : 2009-11-13
Age : 76
Location : Largo, FL 33774
| | Subject: Re: engine rpm at highway speeds Wed Nov 28, 2012 10:15 am | |
| The TV cable is self adjusting according to the FSM. | |
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Olds Weighty Eight
Posts : 1061
Join date : 2011-05-15
Age : 57
Location : Memphis, TN
| | Subject: Re: engine rpm at highway speeds Wed Nov 28, 2012 10:21 am | |
| They're supposed to be when you go through the procedure but often need a little fine tuning via an additional click or two in or out. | |
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Ancient_1
Posts : 105
Join date : 2011-05-31
Age : 73
Location : Sun Prairie WI
| | Subject: Re: engine rpm at highway speeds Wed Nov 28, 2012 1:39 pm | |
| From my experience and what my tranny guy told me it to set it for zero slack in the cable at WOT. | |
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green96
Posts : 7
Join date : 2012-11-25
| | Subject: Re: engine rpm at highway speeds Thu Nov 29, 2012 12:42 pm | |
| ok thanks for the info guys | |
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scoffman
Posts : 555
Join date : 2012-02-21
Age : 47
Location : Lawrenceburg, KY
| | Subject: Re: engine rpm at highway speeds Thu Nov 29, 2012 1:40 pm | |
| Yes but make sure WOT is with someone's foot pressing down on the pedal not your hand on the TBI vlave linkage. | |
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