Hi i have a renault laguna ii hatch 01 plate .im having issues ....over the last couple of weeks everyday my car start fine.then on a drive on the moterway we stopped at a services.after getting back in the car she would not start,but she still turned over normally. After 20 mins she started fine no issues then again it happen agian at another services 100miles on. And same again 20 mins later she started fine. This kept happen8ng every time we stopped.and 20 mins later she started agian.i confused.now a week later the problem still happen when i go shopping or whatever byt all way after 20 mins she starts...can any1help

Wow come on. I buy from BP.SHELL TESCO AND ASDA not in a dark back street Wow come on. I buy from BP.SHELL TESCO AND ASDA not in a dark back street

OK, I can accept that - I had no way of knowing what you buy. Cheap fuel CAN cause problems like you describe, yet a lot of people buy it. So... if you're using decent fuel, then it sounds very much like your engine is getting too hot immediately after shutting it off, possibly getting too hot while you drive but not quite enough to boil the fuel in the fuel rail. Check your cooling fan (at the radiator), and also check your coolant level (in the RADIATOR, not in the overflow tank). Do this while the engine's cold, of course. OK, I can accept that - I had no way of knowing what you buy. Cheap fuel CAN cause problems like you describe, yet a lot of people buy it. So... if you're using decent fuel, then it sounds very much like your engine is getting too hot immediately after shutting it off, possibly getting too hot while you drive but not quite enough to boil the fuel in the fuel rail. Check your cooling fan (at the radiator), and also check your coolant level (in the RADIATOR, not in the overflow tank). Do this while the engine's cold, of course.

My radiator is fine .coolant is fine.engine temp normal.all gauges working correctly.was informed on another site it more than like the crankshaft sensor .so its booked it garagr tom hopefully its the problem My radiator is fine .coolant is fine.engine temp normal.all gauges working correctly.was informed on another site it more than like the crankshaft sensor .so its booked it garagr tom hopefully its the problem

Did you get a "Check Engine" light and find a code that pointed to the crankshaft position sensor? If that sensor was bad, the computer would bark about it. It's possible it's flaky and only works when it's not full-hot, but you WOULD get a "Check Engine" light if that's the cause. Did you get a "Check Engine" light and find a code that pointed to the crankshaft position sensor? If that sensor was bad, the computer would bark about it. It's possible it's flaky and only works when it's not full-hot, but you WOULD get a "Check Engine" light if that's the cause.

No lights at all. No lights at all.

In that case, I can't think your crank position sensor is giving you trouble. The computer would certainly complain if it was. In that case, I can't think your crank position sensor is giving you trouble. The computer would certainly complain if it was.