Ford Scorpio Forum - Print Page


    
      
        Ford Scorpio Forum
        (https://www.fordscorpio.co.uk/cgi-bin/yabb/YaBB.pl)
      

        General >> Problems >> 2.3 high tickover
        
(Message started by: 5stud on Aug 8^th, 2010, 12:47am)

Title: 2.3 high tickover
Post by 5stud on Aug 8^th, 2010, 12:47am

just picked up a 2.3 man est the tickover is obout 2.25k. code reader turns up no stored codes.so try taking off and blocking all pipes still no joy.then cha nged inlet manifold right back to air box useing new gaskets-seals.from a good runnerl but still no joy.

Title: Re: 2.3 high tickover
Post by Jonnycab on Aug 8^th, 2010, 12:54am

Idle control valve ? :)

Title: Re: 2.3 high tickover
Post by tonyboy on Aug 8^th, 2010, 1:11am

maybe a service,

Title: Re: 2.3 high tickover
Post by Simmo on Aug 8^th, 2010, 7:32am

Clean the MAF ?.

Title: Re: 2.3 high tickover
Post by Stixy on Aug 8^th, 2010, 8:47am

I would look at the idle speed control valve too it sounds like its stuck fully open unplug it when the engine is running see what happens if the revs drop its the valve or wiring if they dont drop the fault is elseware . have you tried blocking the egr pipe at the manifold end ?

Title: Re: 2.3 high tickover
Post by 5stud on Aug 8^th, 2010, 9:58am

we have tryed this parts from a good runer.inlet manifold with new seals.maf.idle controle vavle.top loom.sealed the egr at manifold.but it still revs its bxxxx of at tickover.at first we tryed blocking all the holes into the inlet manifold.sirvo.trotel bypas vavle.egr .ect on at a time

Title: Re: 2.3 high tickover
Post by Mike H on Aug 8^th, 2010, 1:03pm

Throttle stuck open slightly? Cable tight? Or too loose?

Title: Re: 2.3 high tickover
Post by Mike H on Aug 8^th, 2010, 1:05pm

Appendix ~ if it's got cruise control maybe that is messing something up so the throttle won't close properly (?)

Title: Re: 2.3 high tickover
Post by 5stud on Aug 11^th, 2010, 9:15am

removed manifold fore the forth time and sealed it with mastick this time and fingers crosed its ticking over normal must have been air geting past a seal sumewhear.its the big one to day MOT 2 oclock fingers crosed agane.

Title: Re: 2.3 high tickover
Post by Tompion on Aug 11^th, 2010, 11:58am

The manifolds are a bit strange in that they tighten to the steel inserts – the plastic part doesn’t necessarily pull tight to the face on the head like a normal metal manifold. The rubber gaskets squeeze up to make the seal or not as in your case.

Good luck.

Dave

Title: Re: 2.3 high tickover
Post by Mike H on Aug 11^th, 2010, 1:46pm

A-ha! So was a leak.

Yes again plastic is a bizarre choice of material isn't it?

@ 5stud there are several mentions on here about converting to the 2 litre alloy manifold, probably a more reliable option for the future (?)

Title: Re: 2.3 high tickover
Post by 5stud on Aug 12^th, 2010, 8:45am

the highs and LOWS of scorpio ownership it failed.
near side hand brake
co level at fast idle=5.56 =max0.30
co level at natural idle 3.19 =max 0.50
lamba 0.85 =min =0.95 max =1.09 the lamba came off a scorpio that pased mot in may but the head gascet failed so that may have killed the lamba .all the rest is ok.can you test lambas.

Title: Re: 2.3 high tickover
Post by Simmo on Aug 12^th, 2010, 9:49am

Have a look at This page (http://www.fordscorpio.co.uk/ho2smonitor.htm) and see if that helps re the Lambda sensor. Check out the 'links' at the side of the page too. The handbrake will almost certainly be a problem with the caliper. Go to the 'How to do things'page and check out BOTH the entries about brake calipers as the photos will help you understand the mechanism. The first thing to try is a good dose of WD40 to the lever on the caliper where the cable attaches. You will see that it is held in place by a bolt. Undo the bolt a couple of turns so that you can slightly raise the lever as well as moving it back and forth. DONT fully release the bolt or you'll have a right job getting it all back together. The shaft going in to the caliper WILL NOT pull right out as it is held by a peg at its base.

Title: Re: 2.3 high tickover
Post by Mike H on Aug 12^th, 2010, 2:05pm

Bum.

Cat, exhaust system, MAF, EGR valve ...... (?)

Title: Re: 2.3 high tickover
Post by 5stud on Aug 25^th, 2010, 10:01am

still cant get it to pass the nutural idle test .jim the nice mot man is baffled put it on test it will be reading betwen 0.09 and 0.08 pass then it jumps up to 2.12-2.30 fail then back down to lower level.it seams to go low-high-low-high.just put on new lambda and tbv .o fore the carb days you screwed them down at the mot station then went home and screwed them back .

Title: Re: 2.3 high tickover
Post by Mike H on Aug 25^th, 2010, 2:01pm

Has you looked at error codes since the first time?

Could be a wiring problem? PCM not getting the correct signals (wiring 'breaks'), getting wrong signals (wiring shorts), can't output properly to something (both)

Title: Re: 2.3 high tickover
Post by Mike H on Aug 25^th, 2010, 2:04pm

Appendix ~ this 'low-high' business sounds like it's 'hunting' for the correct mixture and can't work it out, so keeps trying opposite extremes (?)

Title: Re: 2.3 high tickover
Post by 5stud on Aug 25^th, 2010, 9:58pm

a mate came round last weekend with his 2.5 grand snapon code reader but couldint find a thing wrong.if you disconect the afm will it run on open loop and maybe give a more stable reading ???

Title: Re: 2.3 high tickover
Post by Tompion on Aug 25^th, 2010, 10:24pm

A poor connection won’t necessarily give a fault code. If the connection causes a fluctuating reading but remains within the acceptable range then a reader won’t show a fault. You could look for sensors giving fluctuating outputs such as ECT MAF etc.
Are there any changes in engine note/rpm when the emission changes occur?

Title: Re: 2.3 high tickover
Post by 5stud on Sep 9^th, 2010, 9:53am

just found a new way to kill a 2.3 inlet manifold.witch hapend first dont no .the cat brick disitagrated blocking the expipe .then the exgases go round the egr sistem all the time melting the inlet manifold internals just by the tbv so you have high tickover.this may have damaged sumthing and the reason i am havig problems with geting trough mot .the manifold looks ok externaley

Title: Re: 2.3 high tickover
Post by Tompion on Sep 9^th, 2010, 11:51am

There’s a chamber bringing air via a hole next to the butterfly to the inlet side of the idle air control valve. The metal pipe from the EGR ends just under the outlet side of the IAC so maybe it’s melted through that chamber allowing uncontrolled air to enter the manifold.

A while back someone else had similar problems with the tickover so maybe that’s what happened to his. He fitted a tube to partly cover the inlet hole.
What he did was cut a strip of aluminium and rolled it into a short tube that was the size of the inlet bore next to the butterfly this restricted air going into the hole that feeds the IAC.
I can’t imagine you’d get it to run well both hot & cold doing this as you’d pretty much be taking the IAC out of the system.

I think a suitable thick aluminium plate could be made up to go under the IAC this would be made to blank the existing inlet and bring air via a new external pipe from the inlet.
The existing air feed could be blanked between the butterfly plate & the manifold.

Title: Re: 2.3 high tickover
Post by scorpio_man on Sep 9^th, 2010, 7:45pm

hi there

here's a photo of the mod.....
http://img.photobucket.com/albums/v521/scorpio_man/scorpio%20bits/DSCF0822.jpg

Title: Re: 2.3 high tickover
Post by 5stud on Sep 27^th, 2010, 11:06am

had another look sunday .fited a vacume gauge into the pipe work and at tickover a steadey 15 inch hc is this about right ?.so i think i no longer have a air keak problem

Title: Re: 2.3 high tickover
Post by 5stud on Nov 25^th, 2010, 12:59am

i think i have a self healing scorpio.a bit dispondent i left it in the field untill yester day i asked a frend that dose mots if he could have a look at it fore me when i whent back today the conversation whent.
did you find eneything.
no not a thing its the cleanest car weave ever tested hears youre mot.
all i hve done is put sume fresh petrol and a liter of two stroke oil in the tank and recharged the battery .i had disconected the battery overnight twice before .

Title: Re: 2.3 high tickover
Post by Jonnycab on Nov 25^th, 2010, 3:38am

Just a thought....but when you changed the inlet manifold, was the egr inlet pipe fitted the correct way around...i.e. facing outward/down (It's easy to get them 180 degrees about) ;)

I've seen them wrongly fitted facing inward/up & the consequence of this is that the heat coming back from the EGR melts a hole through the engine side of the manifold (difficult to see unless removed) & it also tends to melt a hole through the rear IACV port chamber :)

Title: Re: 2.3 high tickover
Post by 5stud on Nov 29^th, 2010, 9:53am

you have to fit them faceing up .if you try fiting the outher way you have to cut of the long mounting flang.with the plastic pop rivet off.beter to just seal them up using a 2 pence coin.fits just right. ps just had a look at a transit one its longer with small holes in the sides so sumeone hase redisined them.

Title: Re: 2.3 high tickover
Post by Jonnycab on Dec 1^st, 2010, 3:16am

Sorry, might have been wrong....but I bought a Galaxy 2.3 manifold about a year ago off ebay (cheap) & when I removed the EGR pipe it was facing the wrong way & had melted a hole through the rear port of the IACV & engine side of the manifold :-/......it had been fitted 180 degrees about, which is easy done, as the manifold inlet pipe flange is the same either way around.....I don't seem to recall seeing a plastic pop rivit though, just two blots clamping it to the EGR pipe flange :-/

The Transits ones do have a differently designed EGR pipe (A few of us bought new Transit manifolds off Ebay last year, including me) & the newly designed pipe has not been a problem :)