CPGCharlie Posted April 4, 2023 Share Posted April 4, 2023 Hi guys, I'm experiencing all sorts of electrical gremlins, since my 7 had a visit to a Caterham "specialist" and the car has been returned to me much worse than it was delivered. ( they did replace some bushes and rose joints that were overdue - yay) On driving the car back from Maidenhead, on full tap acceleration the car would just cut out - which had a worse effect than randomly slamming the breaks on. not safe, very unhappy, managed to crawl home.Tacho and Speedo dead, no life. bulbs gone everywhere, half the dash lights gone. it's a meltdown. The first thing i need to get my hands on is the wiring diagram for 2005 SV (if its ever really changed?) If anyone can point me in the right direction i would be greatly appreciative. Charlie Link to comment Share on other sites More sharing options...
Dave Hardcastle Posted April 4, 2023 Share Posted April 4, 2023 Apart from the fact the 'specialist' appears to have caused these problems, surely it's up to them to put it right? It doesn't sound as though they could make it much worse! Link to comment Share on other sites More sharing options...
CPGCharlie Posted April 4, 2023 Author Share Posted April 4, 2023 they are just denying it, and insinuating i drove it to them for the service/tune, with no gauges or electrics working and it cutting out. Apparently i must have just missed all of that, over the 4 years I've owned it and had no problems. They also kept the car so long the MOT ran out and then couldn't be MOT'd as the Speedo didn't work, so going in for a service and tune t came back un roadworthy. Has been off the road traumatic experience, absolute disgrace Link to comment Share on other sites More sharing options...
CPGCharlie Posted April 4, 2023 Author Share Posted April 4, 2023 really made me consider selling it Link to comment Share on other sites More sharing options...
Budjuggler Posted April 4, 2023 Share Posted April 4, 2023 Ah! Did you go to PT Sportscars by any chance? Link to comment Share on other sites More sharing options...
CPGCharlie Posted April 4, 2023 Author Share Posted April 4, 2023 Yes, please suggest an alternative in the Hampshire / Berkshire area Link to comment Share on other sites More sharing options...
K7 VCT Posted April 4, 2023 Share Posted April 4, 2023 Sounds like a speed sensor, though you may still have a cable drive speedo ?My sigma cars speed sensor died and I had np gauges at all, no indicators etc.I would travel further a field for7 works.Sevensandclassics.com, millwood motors etcOthers around I travel from west Oxfordshire to brands hatchI would not goto Maidenhead specialist....Best of luck Link to comment Share on other sites More sharing options...
John Vine Posted April 4, 2023 Share Posted April 4, 2023 Can you tell us which model/engine?ETA: Is this event connected in any way?JV Link to comment Share on other sites More sharing options...
CPGCharlie Posted April 4, 2023 Author Share Posted April 4, 2023 Hi John, it's a 2.3 Duratec Ryes the same event te car as been off the road since, I've ben out of the country for nearly 4 months, just trying to get back to it. and looking for somewhere to take it. The wiring diagram seems like a good start though Link to comment Share on other sites More sharing options...
SM25T Posted April 4, 2023 Share Posted April 4, 2023 Aware of cars with rear wheel sensor Speedo drive where cable was cable tied to chassis and chafed through causing a total engine fail. Link to comment Share on other sites More sharing options...
CPGCharlie Posted April 4, 2023 Author Share Posted April 4, 2023 intersting will check as do not know Link to comment Share on other sites More sharing options...
BigCol Posted April 4, 2023 Share Posted April 4, 2023 For wiring diagrams, see final pages of this. Link to comment Share on other sites More sharing options...
John Vine Posted April 4, 2023 Share Posted April 4, 2023 Do you know the provenance of the car? What engine was in there before the 2.3D? Are the looms (chassis and engine) bespoke items or simply modified from the original?It appears from your other thread (linked in #8) that you have a digital speedo. Is it driven from a gearbox sender or a driveshaft sender?I know nothing whatever about DTAFast ECUs. Will the regular 7 specialists be familiar with yours? What diagnostic tools are available (equivalent to SBD's Easimap)? JV Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted April 4, 2023 Area Representative Share Posted April 4, 2023 "I know nothing whatever about DTAFast ECUs. Will the regular 7 specialists be familiar with yours? What diagnostic tools are available (equivalent to SBD's Easimap)? " DTA SWin software is required to communicate with DTA S-series ECUshttps://www.dtafast.co.uk/download_files/PC_Software/DTASwinSetup%20v90.31.zip plus a cable like this:-https://www.dtafast.co.uk/dta_products/serial-cable-2/ (or, see the bottom of this page to make your own cable http://www.quantums.info/injection.htm )and a USB to serial adapter (preferably with a Prolific chipset) - https://www.dtafast.co.uk/dta_products/usb-to-rs232-adapter/DTA normally reply quickly to email questions, and there is a fairly active and helpful forum here :- http://www.dtaforum.com/ 1 Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted April 5, 2023 Member Share Posted April 5, 2023 If you'd like the wiring diagrams for your Seven or the Workshop Notice for the revised speedometer wiring please send me a Private Message with your email address.Jonathan Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted April 5, 2023 Member Share Posted April 5, 2023 As upthread there are reports of electrical problems elsewhere caused by faults with electronic speedometers.But we need to know what sort of speedometer you have, as requested by John Vine.Jonathan Link to comment Share on other sites More sharing options...
samsul Posted April 5, 2023 Share Posted April 5, 2023 I had a similar issue, albeit with a k-series car. Turned out to be corroded wiring running to/from starter motor and battery causing a short.Feel for you and hope you get it sorted quickly.All the best,Sam Link to comment Share on other sites More sharing options...
CPGCharlie Posted April 6, 2023 Author Share Posted April 6, 2023 Thanks Sam, something i will try to investigate.When it happened with you did the car run fine for most part, started normally...? just had no gauges and all sorts of intermitteet electical issues? Link to comment Share on other sites More sharing options...
samsul Posted April 6, 2023 Share Posted April 6, 2023 Hi, yes. The car would run fine for the most part but would occasionally simply die; complete loss of electrical power and motor. Happened on a few occasions and under different conditions (lights on/lights off, over a speed bump etc.). Like I say, turned out to be a short due to corroded wiring.Can't say for sure this'll be your issue because I know very little about k-series cars and even less about Ford engined cars but perhaps a lead to investigate? Hope you get there!Best,Sam Link to comment Share on other sites More sharing options...
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