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Topic: Help AA Man’s tampered with my idle speed (Read 17102 times) |
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Matt
Senior Member
Manual'd and a 4.0 in the making
 
Posts: 2816
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Re: Help AA Man’s tampered with my idle speed
« Reply #160 on: Oct 16th, 2011, 2:39pm » |
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Hi Tony
id just put a bit on a rag and clean the contacts that the super chips module is plugged into, the ECU's case only bolts together so could be worth popping the lid off and having a look at the board, if its mankey give it a clean with the fast drying type of electrical cleaner
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FDS2000 Scans - Birmingham
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Simmo
Administrator
I'm an OAP !
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Re: Help AA Man’s tampered with my idle speed
« Reply #161 on: Oct 16th, 2011, 3:36pm » |
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If it helpsThis is what it should look like.
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Help AA Man’s tampered with my idle speed
« Reply #162 on: Oct 16th, 2011, 4:02pm » |
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Thanks Matt/Simmo
I opened to ECU and it’s in perfect condition; It looks like it was just the contacts the superchip connects to that had corrosion/oxidization. I have cleaned these and will put everything back now.
Thanks
Tony
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Help AA Man’s tampered with my idle speed
« Reply #163 on: Oct 16th, 2011, 6:05pm » |
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on Oct 16th, 2011, 1:48pm, Pianoman wrote:I cannot find any damp anywhere and its rained here all week. The passenger footwell is bone dry, same for all the cladding around the glove box area. This is something I checked for when I bought the car. Maybe in the past the car had blocked drain holes or something?
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OK more likely just condensation.
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Mike H
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Help AA Man’s tampered with my idle speed
« Reply #164 on: Oct 16th, 2011, 6:16pm » |
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on Oct 16th, 2011, 3:36pm, Simmo wrote:| If it helpsThis is what it should look like. |
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Looks quite different, being for TDi?
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Mike H
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Matt
Senior Member
Manual'd and a 4.0 in the making
Posts: 2816
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Re: Help AA Man’s tampered with my idle speed
« Reply #165 on: Oct 16th, 2011, 6:20pm » |
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The TD's didnt use a ford ecu to start with, it was a VM ecu  , hence early TD dont have PATS or the Trip computer
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FDS2000 Scans - Birmingham
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Help AA Man’s tampered with my idle speed
« Reply #166 on: Oct 16th, 2011, 6:21pm » |
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OK then!
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Mike H
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Help AA Man’s tampered with my idle speed
« Reply #167 on: Oct 16th, 2011, 9:47pm » |
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It’s looking good 
Put everything back, noticed a slightly chaffed wire on the main PCM loom but it was not in contact with any other chaffed/bare wires., although I suppose in theory its possible it was in contact with loose nut that was in there. Taped this wire up.
Started the car, revs were all over the place for the first min then it settled done to around 750 RPM. Took the car on a 32 mile drive and it ran perfect. Rev counter behaved perfect, got it home and left the engine running for 5 mins and the revs stayed constantly at 750 RPM, no fluctuation at all.
I have noticed that there is no ding when I open the doors with the lights on or try to program the remote, but I am not sure this is related to the CCM/PCM wiring.
Will take it another test run tomorrow
Thanks
Tony
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Simmo
Administrator
I'm an OAP !
Posts: 5508
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Re: Help AA Man’s tampered with my idle speed
« Reply #168 on: Oct 17th, 2011, 7:55am » |
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Fingers crossed then!!.
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Help AA Man’s tampered with my idle speed
« Reply #169 on: Oct 17th, 2011, 11:45am » |
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Well done congratulations 
Oh no, no chimes! 
Catastrophe
Problee another corroded connector maybe and you disturbed it
Again underlines the fact that these cars are utterly dependant on good wiring and connections
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Mike H
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Help AA Man’s tampered with my idle speed
« Reply #170 on: Oct 23rd, 2011, 1:03am » |
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I have now taken the car out twice on two 10 mile runs and it’s been perfect. I took it out today and after about 13 miles I floored the throttle and let the car do its cozzie thing, after doing this twice the rev counter started doing its dancing around thing like it used to do. The actual engine revs were fine with the car still running fine and changing gear ok.
When I got home I ran a scan. There were no error codes. The RPM data was showing the car idling between 745 and 760 RPM, in the enhanced data the desired idle RPM was 720. The rev counter was showing 2200 to 2800.
I am assuming that when the car was revved up, the vibration has moved a loose wire/connection.
I don’t think it’s the ECU/CCM connections. Could it just be a loose connection to the rev counter?
I checked my notes from when I bought the car and it’s never made a ding noise when I open the door with the lights on, so I think this is a separate issue.
Many thanks
Tony
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Help AA Man’s tampered with my idle speed
« Reply #171 on: Oct 23rd, 2011, 12:40pm » |
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OK sounds like dashboard problem of some sort, might have corrosion issues in there as well. That's got a circuit board and it's own computer even. I think. So probably looking at a dash out job to have a proper investigation.
But at least the motor works properly 
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Mike H
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Help AA Man’s tampered with my idle speed
« Reply #172 on: Oct 23rd, 2011, 12:45pm » |
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on Oct 23rd, 2011, 1:03am, Pianoman wrote:Could it just be a loose connection to the rev counter?
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Doubt it, that's what I meant, the needle instruments are just electrical gauges controlled by the dash's own computer system. I think. I.e. rev counter is not a separate thing by itself.
If I'm talking cobblers someone else will come up with better info
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Mike H
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: Help AA Man’s tampered with my idle speed
« Reply #173 on: Oct 23rd, 2011, 3:52pm » |
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Check pulses when the rev counter is playing up using the instrument diagnostic:
http://www.fordscorpio.co.uk/instreset.htm
If that is incorrect it could be a fault with the cluster or the signal.
If pulses are correct then a poor connection between the revcounter & the board is possible.
The drives for the gauges are attached to the dials & just plug into the circuit board.
The circuit board is sandwiched between the case & the back so if you remove the back of the cluster you should be able to lift the board (taking care not to strain the ribbon cables) this should disturb the connections to the 4 dials & hopefully clean the contacts.
The gauges have 2 coils at right angles to each other with two terminals for each coil.
If you think of the terminals like compass points if you connect a battery
NS the needle points N
SN the needle points S
EW the needle points E
WE the needle points W
By juggling the voltage & polarity to both coils you can make the needle point where you want.
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ABS multiplug wheel sensor pins MK IV or MK 20
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Pianoman
Full Member
24v Ultima Saloon & 2.0 16v Ultima Estate
Posts: 246
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Re: Help AA Man’s tampered with my idle speed
« Reply #174 on: Dec 23rd, 2011, 11:03am » |
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I would like to say that this car has now been running perfect for the last 6 weeks and has passed its MOT. It looks like the problem was one or a combination of the following.
3 of the wires going into the CCM were chafed and touching the metal cover of the CCM/ECU
(Can anyone explain how they could get chaffed at this point?)
Loose multi-plug going into ECU. It also had a loose screw inside
The car had a Superchip mod plugged into the ECU. The contacts were corroded.
The rev counter still goes mad after about 15 miles but thanks to Tompion’s info, this looks like a loose connection behind the cluster. I will strip the dash in the summer.
Hope all this helps someone else.
I would like to give a big thank you to everyone who helped sort this, I have also made a donation.
Many thanks
Tony
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Help AA Man’s tampered with my idle speed
« Reply #175 on: Dec 23rd, 2011, 12:59pm » |
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Mike H
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