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        General >> Problems >> bad MPG, Idle etc,2.9 ultima 12v 95 saloon
        
(Message started by: haitch on Jul 10^th, 2008, 11:08am)

Title: bad MPG, Idle etc,2.9 ultima 12v 95 saloon
Post by haitch on Jul 10^th, 2008, 11:08am

Found someone to do the scan and guess what.No power at the EEC 1V ECU.
Nearly ready to give it up. >:(

Title: Re: bad MPG, Idle etc,2.9 ultima 12v 95 saloon
Post by harry.m1byt on Jul 12^th, 2008, 10:35pm

The 12v uses a Star tester for diagnostics.

Title: Re: bad MPG, Idle etc,2.9 ultima 12v 95 saloon
Post by gozz on Jul 12^th, 2008, 10:59pm

haitch.
I run several 12v hearses and limousines in the funeral trade,bad fuel economy and idling is nearly always due to either the manifold actual pressure sensor,or vacuum thereto,or one or both exhaust oxygen sensors.Another common problem,although with different symptoms,eg cutting out at road junctions and intermittent idling speed is down to a failing throttle potentiometer.If you are unable to get a scan,which in fact is a simpler operation than EEC V,but seems to bamboozle technicians,substitution of these parts for known good units does'nt take too much time.
Good luck GOZZ.

Title: Re: bad MPG, Idle etc,2.9 ultima 12v 95 saloon
Post by scorpio_man on Jul 13^th, 2008, 8:38am

on 07/12/08 at 22:59:21, gozz wrote:

[]

the 12v is generally bullet-proof.

if there was no power at the ecu, it wouldn't start, afaik. :-/

work your way though replacing the list of parts one at a time and you'll find the culprit.

hth

Title: Re: bad MPG, Idle etc,2.9 ultima 12v 95 saloon
Post by haitch on Jul 15^th, 2008, 4:35pm

Thanks Goz & Scorpio Man.Its in the shop now they are having trouble getting a MAP as they think thats the problem.They still cant get any power at the EEC socket in the coin pocket so no Scan. >:(