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        General >> Problems >> Rev counter erractic on Ultima 2.9 12v
        
(Message started by: samg on May 15^th, 2007, 4:44pm)

Title: Rev counter erractic on Ultima 2.9 12v
Post by samg on May 15^th, 2007, 4:44pm

Hi,
The rev counter on my 2.9 12v Ultima auto Estate is waving up and down even on tick over.
Where is the sensor located?

Regards,

Sam

Title: Re: Rev counter erractic on Ultima 2.9 12v
Post by Snoopy on May 15^th, 2007, 5:41pm

It takes the pulse from the distributor, the wiring diagrams are here Wiring Diagrams (http://www.carsoft.ru/avtorepair/sierra_el.html)

Even though it says sierra ... It IS for the Scorpio.

Title: Re: Rev counter erractic on Ultima 2.9 12v
Post by samg on May 16^th, 2007, 4:32pm

Hi Dave,

Have checked link unfortunately, I can not see any details for rev counter.

is the sensor a seperate module connected to distributor? or could it be the rev counter itself.

regards,
Sam

Title: Re: Rev counter erractic on Ultima 2.9 12v
Post by Dave2302 on May 16^th, 2007, 6:20pm

Hi,

There is no "sensor". It takes a pulse from the LT side of the ignition.

IMHO provided your engine is running ok then it is more likely that your rev counter is faulty. ;)

Regards Dave.

Title: Re: Rev counter erractic on Ultima 2.9 12v
Post by samg on May 16^th, 2007, 8:24pm

Many thanks Dave,

The engine is running very sweet after oil change, new oil filter, air filter, new spark plugs and a bottle of Cataclean in the fuel tank, what a difference the Cataclean made to the c o readings.

As you say, it must be the rev counter, I will try to pickup one from local breakers yard,

Thanks again,

Sam

Title: Re: Rev counter erractic on Ultima 2.9 12v
Post by Snoopy on May 17^th, 2007, 8:58am

You will have to get the WHOLE unit the Rev counter is NOT a seperate item.

Title: Re: Rev counter erractic on Ultima 2.9 12v
Post by samg on May 17^th, 2007, 9:05am

Ok thanks Dave,

Regards,
Sam