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        General >> Problems >> Low on Power 
        
(Message started by: MARTIND on Mar 20^th, 2007, 8:58pm)

Title: Low on Power
Post by MARTIND on Mar 20^th, 2007, 8:58pm

2.9 12v Auto

Just seems to lack Power when accelerating

auto box seems to work ok - not slipping

cruises effortless at motorway speeds

just doesn't accelerate that quickly from any speed (even after kickdown)

it has just passed a MOT & all the Emissions were fine

I also have a old mk3 Granada 2.9 Manual

which pulls away a LOT better even in top gear you can feel it accelerate

Any Ideas ?

Does it just need a good service ? bits replacing ? bits cleaning ?

Thanks Martin

Title: Re: Low on Power
Post by scorpio_man on Mar 22^nd, 2007, 1:03pm

hi there

could be a fuel pressure issue; we're seeing more of that now. have you checked all the usual things? spark plugs, correct grade of oil, etc.

don't really know much about the 12v. :-/

hth

Title: Re: Low on Power
Post by MARTIND on Mar 22^nd, 2007, 10:09pm

To be honest i havn't checked much over at all

think it needs a good service - think this should be my starting point

new dizzy cap , leads etc

Correct grade of oil ? - engine or gearbox ?

Title: Re: Low on Power
Post by dogma on Mar 22^nd, 2007, 10:34pm

Hi mate, im having exactly the same problem myself, although i also have a slight idling problem when the car is stationary but waiting to go in drive, chech your vacum pipes and EGR valve, seems to be one of the biggest suggestions on here for the problem. I replaced the plugs, HT leads, coil and it made no differance at all. Good luck and let me know how you get on
jim

Title: Re: Low on Power
Post by MARTIND on Mar 24^th, 2007, 9:48pm

New plugs , cleaned leads , new roter arm , new dizzy cap & got rid of that thing the dizzy cap sits in - not the fastest thing yet though

Title: Re: Low on Power
Post by dogma on Mar 24^th, 2007, 10:00pm

Hi mate, mine doent have a ditstributer cap, it has a sort of coil thing lol, sorry my technical terms are limited lol. Iv got a mobile mechanic coming around in the morn to have a look and do a scan, if he finds anything ill let you know if you want and you could try it too
jim

Title: Re: Low on Power
Post by MARTIND on Mar 24^th, 2007, 10:18pm

Look forward to yer report back

Hope it's summat simple

Title: Re: Low on Power
Post by dogma on Mar 25^th, 2007, 9:32am

Hi martin, the result altho im still not sure is that the fuel injectors need replacing or re conning. He said he did a scorp a few weeks ago with exactly the same problem and it solved it
jim 8)

Title: Re: Low on Power
Post by MARTIND on Mar 25^th, 2007, 11:13am

How Much ? :-/

Title: Re: Low on Power
Post by dogma on Mar 25^th, 2007, 12:05pm

He didnt charge anything, he said he knew what it was straight away as the car sounded and ran funny and had no guts when it was floored, but as i said, still not to sure about him to be honest
jim

Title: Re: Low on Power
Post by Spannerdemon on Mar 26^th, 2007, 10:00am

Quote:

mine doesn't have a disttributor cap

I wonder if this is your problem with the car?

ALL the 12v have a Distributor Cap. 6 Leads and a Coil Lead. The coil is down on the right hand side of the engine bay looking into the bonnet from the front of the car.

I wonder if your car has been modified and your ignition system is non standard.

Only a thought.

Also, it's not a good idea to remove the canister that surrounds the dizzy cap. Apart from protecting the cap, it also provides shielding from moisture and water a bit like the battery cover.

As for acceleration, the 12v isn't a Cosworth, but even so, it will out accelerate most cars without any effort from standstill. If it doesn't, then yes, you have some tuning issues. ;)

Title: Re: Low on Power
Post by Snoopy on Mar 26^th, 2007, 3:00pm

If its that down on power check to see if the cat has broken up and is blocking the exhaust. THAT could cause all of the syptoms that you describe, even though the car runs OK.

Title: Re: Low on Power
Post by MARTIND on Mar 26^th, 2007, 8:08pm

on 03/26/07 at 15:00:40, Snoopy wrote:

If its that down on power check to see if the cat has broken up and is blocking the exhaust. THAT could cause all of the syptoms that you describe, even though the car runs OK.

How do I tell

Would it still have good emissions if the Cat is US ?
(passed it's test easily)

if it is the Cat do I have to replace it
can I just clean it out - so it's straight through
or just do away with it altogether

I know on my Bike it's so much better without it

Thanks

Martin