Don Cook Posted September 22, 2003 Share Posted September 22, 2003 Gentlemen, I have a 97 HPC originally fitted with a Vecta immobiliser. Recently it packed up completely (it had given trouble several times before) so I took the car to a certified installer who installed a Toad transponder unit. Since then the car appears to be down on horsepower, I’ve been back to the installer who checked everything out again and said that the whole thing was correct. The other day after a decent raz about I took out the spark plugs and discovered that 2 and 3 were sooted whilst 1 and 4 were clean. The car is fitted with the 3 wire type double ended coils. Anyone got any ideas. Cheers Don Cook Link to comment Share on other sites More sharing options...
Paul McKenzie Posted September 22, 2003 Share Posted September 22, 2003 Don, Sounds like the mixtures are all to cock, or you're missing a spark on one of the cylinders. I'd take it to a local rolling road and get the carbs sorted, they'll also sort out any ignition problem Paul Link to comment Share on other sites More sharing options...
Don Cook Posted September 22, 2003 Author Share Posted September 22, 2003 Thanks Paul, The only thing is that it was O.K. driving it there and noticeably down in the grunt department taking it back. There has been an ongoing hassle with the carbs 48 DCOSPs but this is different. Cheers Don Link to comment Share on other sites More sharing options...
ChrisC Posted September 22, 2003 Share Posted September 22, 2003 I recently lost 1 and 4, due to an ECU fault. My car is a 97 vx with a 3 wire coil pack. It original had a Vector, that was removed by Caterham, and then a local installer fitted a Meta. When I removed the original Engine Loom for the ECU replacement I found some original Vector wiring in the lead between the coil and the ECU, but they had not immobilised the whole coil just one side. If your installer has just used the original Vector connection points then you probably have half your coil being powered through the new immobiliser and half not. Now assuming you have the original ECU, and MBE 906, this could put extra load on the coil pack drivers and cause them to fail. If they fail the chip is obsolete (first built in 1984 and stopped production in 1987), and you will be in the game for a new ECU. I would recommend you speak to the installer and find out how he installed the immobiliser, if they cut into the pink or purple wire from ECU to coil pack get then to remove it. Immobilise the white ignition power wire to the ECU relay (not on wiring diagram, but the top relay), used to switch the ECU on, and not the power supply to the ECU instead. After spending some time looking at the loom of my car, I am going to have to spend some time tidying things up over the winter, after Caterham and the other Immobiliser installer has had a go at it. Hope this helps Chris.... H15 SVN Get it ! Link to comment Share on other sites More sharing options...
Don Cook Posted September 22, 2003 Author Share Posted September 22, 2003 Thanks Chris, I'll have a look, I fear though that you may be right, the immobiliser bloke seemed to work on a trial and error basis. Cheers Don. Link to comment Share on other sites More sharing options...
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