TR 85 shutting off after warm up

i have not had a TR yet, just the v8 carb ferrari's, but i dislike seeing a help request with no replies.

sounds to me like something is getting hot and shutting down, perhaps a fuel pump relay or one of the harness connectors for the ECU?

there are some great TR guys here, so i hope they chime in for you.

when its dead, see if you can determine if it has 12V power, fuel, and spark where and when it should. you may need a few tools ( multimeter) in the car to check it when its "dead".

sucks to do this on the side of the road, but it goes with ownership sometimes.

 

'suddenly' infers no sputtering - which makes be think electrical rather than fuel.

other than that point - all one can do is start tracing down issues while it is in the hot/ no start condition.

same old drill - start with spark at the plugs and work upstream. might cheat a bit & go straight to the fuse box & check it's condition. the 'hot', no start condition may be a 'hot' board rather than a hot engine. since both banks are equally and totally affected, the electrical stuff (FI etc) that serves only one bank can likely be eliminated right off the bat.

sorry not to add more, but the E&I stuff is not my expertice... I'd be guessing.

rgds,
vince

 

Yes definately check out the mother board for any signs of overheating - just like Vincenzo said...it's a good place to start. Pull out the white connectors at the lower part of the fuse panel and look for burned or "brown" connectors for the fuel pump circuits, etc.

 

Dear Ferraristi,

I agree with the above. It must be something related to your dash pull. In a TR, you mainly have wires and connectors, not printed circuit boards. Perhaps something going back to the fuse board is not right.

Please describe how your car shuts down.

Also, try starting your car and run it in the garage for ten minutes or so and see if anything happens. Better doing testing in your garage with all your tools than at the side of the road.

I've seen where a intermittent contact would heat up...expand and break contact.....would cool down and contact resumed.


Shamile

Freeze....Miami Vice !

 

sounds like a bad tachometric relay. Its located behined the fuse panel to just to the right. Should be the second last realy.