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        General >> Problems >> 2750rpm@50mph   3750rpm@70mph 
        
(Message started by: lucydog on Jun 10^th, 2007, 2:34pm)

Title: 2750rpm@50mph 3750rpm@70mph
Post by lucydog on Jun 10^th, 2007, 2:34pm

hi my 1995 2 litre auto scorpio ultima is running at 2750rpm@50mph and 3750@70mph is this correct :-/ the engine seems to be revving quicker than my old 2 litre auto ghia scorpio and im wondering if the overdrive is working correctly?.. is it running normally.. thankyou all... :)

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by solarpanel on Jun 10^th, 2007, 2:43pm

drive car at 50mph it should be in top with lockup press the button on stick the revs should change if not then its not working

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by TiberiuS on Jun 10^th, 2007, 5:52pm

You're not engaging overdrive ;). O/D normally drops in at about 50mph, revs at 70mph should be around 2800 in the 2.0 I think.

Is the autobox behaving ok otherwise? I remember you saying in another thread that you've cleaned the MAF.

Regards, Bruce.

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by lucydog on Jun 10^th, 2007, 5:58pm

gearbox works well apart from overdrive??? chap i know says its a gearbox sensor not working?? will it harm the engine and box running the car without the overdrive i only do 70mph max any???. i think ill use more fuel though won't it.... thanks

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by Highlander on Jun 11^th, 2007, 12:36am

Wont harm it, really its like driving a manual car in third everywhere but it will kill your fuel consumption..

Vehicles speed sensor ok? does the speedo act funny at times?

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by cossiejamie on Jun 11^th, 2007, 11:17am

If i remember rightly 50 mph should be about 2000 or under.
And i seem to remember 4000rpm is about 90 mph.
Can`t remember what 110mph is though, was too busy looking at the road :o
Jamie

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by lucydog on Jun 11^th, 2007, 7:47pm

on 06/11/07 at 00:36:29, Highlander wrote:

Wont harm it, really its like driving a manual car in third everywhere but it will kill your fuel consumption..

Vehicles speed sensor ok? does the speedo act funny at times?

the speedo works fine, but all needles go right round to limit when i start car up????

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by Huff on Jun 11^th, 2007, 8:21pm

As far as i know this is a symptom that the battery or alternator is failing, however don't think is related to the autobox problem.

Title: Re: 2750rpm@50mph 3750rpm@70mph
Post by TiberiuS on Jun 11^th, 2007, 8:49pm

Yeah. That's classic weak battery stuff :).

Regarding your fault, if the speedo is working ok it sounds like loom damage, I remember reading that some DOHC Scorps suffered autobox loom damage, looked into it when I had my problems. Might be worth getting someone to check where the loom snakes around the autobox and the main connector to it.