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Topic: Help AA Man’s tampered with my idle speed (Read 17110 times) |
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Dave2302
Senior Member
2006 Mercedes S55 AMG, Retired Barefoot Waterskier
 
Posts: 1119
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Re: Help AA Man’s tampered with my idle speed
« Reply #140 on: Sep 20th, 2011, 7:41pm » |
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LOL
Don't talk to me about wiring, I've started wiring the Puma today, but I'm at that stage where I have the whole interior loom untaped and I am snipping out wires I don't need (speakers, airbag abs etc), and adding extra wires for the new rally based stuff.......................
Example left in the n/s/rear speaker wires in but re routed them up the n/s screen pillar to give a + and - feed to the intercom unit, will connect the 2 ends at the old "Radio" end to the radios earth and Ign pos1 +, so intercom is now fed by the old stereo circuit & fuse  .....................
Next example, purchased 2 front spot lamp switches from a hi spec model and wiring these into full beam circuit, dash illumination circuit(so they light up at night), and then 2 fresh leads from them to the engine compartment where the Spot lamp relays will live
All this requires a lot of thinking in advance.............
My poor old brain is fried, and I haven't even started on the engine loom yet LOL
Cheers Dave
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Dave "The 'ol Bear" ex Footer !
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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 #141 on: Sep 26th, 2011, 2:55pm » |
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I am away till Sat so will test connections to pats and ecu as well as cleaning them and checking RPM with ODB2 lead then. I have one quick question, my servisol super 10 contact cleaner says dont use on live electric devices, so should I be disconnecting the battery before using this on all the connectors to the ECU and PATS units?
Thanks
Tony
Ps is there any other connecters I sould spray while at it
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Octavian_P
Senior Member
 
Posts: 1126
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Re: Help AA Man’s tampered with my idle speed
« Reply #142 on: Oct 7th, 2011, 5:07pm » |
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It would be safer to use the spray with the battery disconnected as you reduce the risk of making a temporary short circuit with the liquid. As for not spraying the "live" wires is also a caution as this could get inflammable from an electric arc. You must definitely check and clean the EDIS connector. As i have described in this topic 2 pages back, i had the same problem 
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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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 #143 on: Oct 8th, 2011, 12:05pm » |
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"Live electric devices" more likely means the mains
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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 #144 on: Oct 13th, 2011, 3:53pm » |
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I have taken the CCM out and cleaned all the connectors with switch cleaner. The flat muti-plug that goes into the CCM has several chaffed wires.
The muti-plug into the bottom module does not feel that tight and there is evidence of a previous wire (s) been taped up or repaired. See my picture
How do I get the bottom module out (is this the ECU) It looks like one rivet has been drilled out
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 #146 on: Oct 13th, 2011, 9:09pm » |
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Ah-ha evidence of previous "repair", and following your earlier post about disturbing the plugs think we may be getting somewhere at last. Are the chaffed wires down to the copper? Will need taping also check out what's under the already taped up ones.
What's causing this guys, vibrating on metal edges?
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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 #147 on: Oct 13th, 2011, 9:34pm » |
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Hi Mike
There are about 3 wires with the sheiding rubbed away (this is on the flat muti-plug that goes into the CCM) The coating has chaffed away at almost the same point on each wire. I think they were shorting out against the black metal cover with the rivets in. I am not sure how they could get chaffed, maybe the back of the glove box pushes against them ? Does anyone know where these wires go ? I have taped them up now.
I am not 100% sure there has been a previous repair, but there is electrical tape around some of the wires above the PCM and one rivets been drilled out so it looks like somones been there before. I will check it as soon as I get the PCM out.
Tony
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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 #148 on: Oct 13th, 2011, 11:53pm » |
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Hi tony
When you get the ecu out post up the wire/pin numbers of any damaged or tampered with wires. Dave2302 and myself must know every pins function off by heart now thanks to a project weve been doing over on ford power lol
There is a number next to the outer cables once you take the black plastic cap off, they go in order so just count back for cables in the middle, youll.see what i mean when you get there lol
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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 #149 on: Oct 14th, 2011, 3:12pm » |
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on Oct 13th, 2011, 9:34pm, Pianoman wrote:| I think they were shorting out against the black metal cover with the rivets in. |
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That's sort of what I was thinking as well. Maybe some kind of sturdy tape around the whole lot?
Anyway interesting if frustrating exercise getting to the bottom of this; those of us who predicted leccy gremlins are we allowed to gloat? lol
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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 #150 on: Oct 15th, 2011, 5:06pm » |
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Do I need to drill out all 6 rivets to remove the PCM.? I have taken the top 3 out but it wont budge, I looks like the bootom part of the bracket is connected to the top.
Thanks
Tony
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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 #151 on: Oct 15th, 2011, 6:09pm » |
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Ok worked it out, I did need to remove all 6 rivets.
Removed the rivets and undone the 10 mm nut to remove the multi-plug. There was also a loose nut inside the black plastic cover. All wires looked ok. The other wires higher up were also ok, what I thought was a previous repair job was simply wires wrapped in insulating tape.
My PCM has a blue plug on the back with the word superchips on it. This pushes into the PCM. It was not on properly and the connectors all quite corroded, see my pics. What is this connection for and could this have anything to do with my problem?
I have cleaned all plugs with switch cleaner. I have not put everything back as the light was fading and I want to double check all the wires first. Should I spray inside the PCM or CCM while its out of the car?
Just looked up superchips and it looks like a performance mod
Many thanks
Tony
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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 #152 on: Oct 15th, 2011, 6:18pm » |
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Yep superchips is a performance company, didnt know they did one for the scorpio, rare bit of kit you got there
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FDS2000 Scans - Birmingham
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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 #153 on: Oct 15th, 2011, 6:28pm » |
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It takes it up to 214 BHP 
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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 #154 on: Oct 15th, 2011, 8:33pm » |
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Well that was unexpected! So someone has been in here before. With modifications
on Oct 15th, 2011, 6:09pm, Pianoman wrote:| There was also a loose nut inside the black plastic cover. |
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ARRRGH!! 
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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 #155 on: Oct 15th, 2011, 8:35pm » |
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I think the PCM has been taken out to modify if to accept the superchip.
Tony
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gozz
Senior Member
Been around awhile
Posts: 3475
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Re: Help AA Man’s tampered with my idle speed
« Reply #156 on: Oct 15th, 2011, 9:10pm » |
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Blimey,what a pig's ear for sod all extra power  ,some poor bloke paid good money for that,dear oh dear,and you reap the resulting aggravation !!! 
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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 #157 on: Oct 16th, 2011, 7:53am » |
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The level of corrosion would indicate dampness. Is there any other sign of water ingress in that area. There is a known issue with water getting in from the large rubber grommet which carries the loom from behind the auxillary fuse box in to the glovebox area. IF the grommet is disturbed and not correctly replaced water will run in and, usually, manifest itself by soaking the carpet in the passenger footwell.....having run over the 'electronics' beforehand!.
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Now I'm an OAP
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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 #158 on: Oct 16th, 2011, 11:52am » |
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Good point. 
Does explains the sequence of events, corrosion takes the upper hand, then car starts behaving oddly.
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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 #159 on: Oct 16th, 2011, 1:48pm » |
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I agree with Simmo, it does look like water ingress but 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?
Will it harm the PCM if I open it and spray it with contact cleaner ? Should I try to replace the PCM ?
Thanks
Tony
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