After the rolling road session (part 1) at Emerald which resulted in a blown CV boot and a bit of a fire, I noted on the clean up operation there is a little coolant (pink) on some of that ribbed heat sleeve around the handbrake cable. So I can’t find any leaks and the expansion bottle doesn’t seem to lose any liquid, so it this simply residual old coolant, or is there a big concern coming my way? Is there a coolant ‘blow off’ somewhere?
Secondly, I noted that there are two electrical connectors on a coolant fitting on the front of the engine adjacent to the exhaust manifold. One is a brown connector, the other pink. The latter appears to have only one wire coming out of it and the black ribbed conduit it runs in is a little melted! All indications appear normal, so why the two connectors and what does the pink (lower) one feed?
Many thanks,
Kurt (the Exige is really testing my patience) Barker…
Hopefully little to concern yourself over Kurt, just a bit annoying. Maybe there’s a tiny weep on one of the hoses around the coolant bottle etc. The only place coolant can vent from is the cap on the expansion bottle and is the most likely source for the coolant you’re finding.
The brown sensor feeds the ECU and the blue sensor with that pink plug attached feeds the Stack dash.
Azrael,
Many thanks, I’ll keep a good look out. Temp readout was a bit scatty last night. After the thermostat opened, the car was running from 84-92 up and down. Before the RR session it was stable on a run.
I assume the pink connector SHOULD have a second wire running into it? The engine is much more smooth since the RR tune which will need finishing at Emerald. Lots of popping and banging on the overrun is fun though
I think the pink connector is single wire, the sensor earths through it’s body to the engine block. That’s why the temp of the dash can change when you switch the fan on - dodgy earths! As long as you’re seeing a temperature on the dash it’s working ok.
Have you got the pressure relief thermostat? I think the way it’s sensitive to pressure as well as temperature means it can react quicker making temps appear to jump more once you start using a greater rev range.
Yes, there is a PRT fitted. It ran fine today, and last night, temp is all normal, but just a bit more variable than I’m used to. That said, I think I’m watching it like a hawk since it had its little maladies.
Thanks for all the info, desperate to get it back to Emerald, finished off and reliable on the road over winter. I’ve vowed to use it once a week, every week, to enhance its reliability. Mrs B was talking of the need for it to stop being “an expensive, unreliable garage ornament”! There were mutterings of “kitchens” and latterly “BMW 1M’s”, neither of which would tick my boxes for Britishness…
I think I need to ask emerald to let it pop and bang, I like it!
