I dont really know why it happens, however I find leaving my car on for about 10min before driving eliminates this problem as the car will have warmed up (so I presume the car dont like the cold!). Also spraying some WD40 on the HDI leads helps too.
The Opel also has a small rubber vacuum pipe connecting to the injector system / inlet manifold. Sometimes this pipe perishes and allows air to enter thus decreasing the vacuum. The engine then cuts out. It's simple to check and replace the tubing where necessary. You may also notice the engine cutting out when traveling at speed and one suddenly slows down.
Centrifugal force is a problem when turning at fast speeds.
It would shorten the life span of the engine some.
If by this you mean only "hot heat" when drive at highway speeds likely thermostat bad and/or almost stuck and takes long time warm up from high engine RPM during highway driving.
No idea to be honest, but i have a 95 Corsica with a similar problem that will turn the Service engine light on after a while of driving highway speeds, or after reaching highway speeds and slowing down again. After getting the code read i found out it was for the EGR valve sensor. Basically meaning that its positioning fine at normal in town driving but not working as it should at higher speeds. Again i can't assure you this is a positive solution but i would recommend running your car as you would normally get on the highway and then while the light stays on going to AutoZone (They will run service engine soon checks for free) or a mechanic you trust. hope this helps.
Having a bad rod bearing could cause a truck to make a loud knocking noise and shake when driving at high speeds. The engine having a coolant leak or an engine timing problem could also cause the knocking noise.
I had the same problem in my 93 2.3L. The engine would die when i would put it into park after driving for a while, and eventually started to stall on the road at very slow speeds. The problem was a bad fuel pressure regulator. It wasn't a cheap fix, but i brought it to a dealership. I would imagine that it isn't a difficult fix for a more knowledgeable person.
Both a friend and I, each driving 1995 Ford Explorers with the 4.0 L OHV engine, developed an off and on surging problem at speeds over 37 MPH. The problem was corrected by installing a new set of Ford Motorcraft platinum spark plugs. In my situation I only had 41,000 miles on the original plugs but 2 of them already had gaps wider than the specified range.
They "reset" while driving at highway speeds.They "reset" while driving at highway speeds.
It is on because there is a problem with the charging system. Most likely the alternator is defective.
It seems to be the usual hybrid method of a gas(/petrol) engine for driving at high speeds, with an electric motor for low speeds. The electric motor and gas engine combine forces when a lot of thrust is needed quickly (eg quickly accelerating to overtake)
The main difference is in hybrid cars there are a small petrol engine and a electric motor. When the car is driving along at slower speeds the Electric motor is driving the car while the petrol engine recharges the battery but when the speed is greater the Engine And Electric Motor Drives The Car
could be a bad battery wire