Saab 2.2tid car loses all power when warm, rev counter goes to zero
Hi my 2.2tid 95 works fine until the temp gauge gets to about half way, then car loses all power, not like the common limp home mode, basicaly tick over power, and the rev counter goes to zero, if left for a couple of hours car starts and runs fine, then will repeat the above as soon as warm, any idea's I've a feeling it could be a Crankshaft position sensor, but cannot find it on the engine block??
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have code checked but it is in limp mode the truck will do this to protect the engine and allow a safe stop or to get to a service location ----check your oil may be low or ineed of an oil change is the most common
Hi Declan this is called (limp home mode) the computer shuts the vehicle down to half power to get you home. Get to a Garrage and get it diagnosed properly anything more than this is guess work. Regards Jom...
Does it lose power or go to limp mode. (second gear)? Being in limp mode makes it feel like it loses power. Takes of slow and does change gears. Have the codes read. Turning it off just resets the computer until it realises something is wrong.
Check your temp gauge, make sure it is not overheating. I am not sure if the '78 was fitted with a ECM, but if it was, then anything that poses a threat to the engine is picked up by the ECM which puts the vehicle in limp mode. This means that the computer actually cuts engine power so that you can limp to the nearest garage to fix the problem and minimise damage to the engine.
However, '78??? I'm not sure I'm in the ballpark with this. Still, make sure it not overheating.
If the thermostat is bad (i.e. stuck open at all times), this would allow coolant to circulate in the engine even when it is below the desired operating temperature. This leads to OVERcooling of the engine. You can either replace the thermostat as a first step or remove it and test it -- closed when cold, open when heated above 190-200F.
Hi, limp mode or (limp-in mode or limp-home mode)occurs when your computer in your car is not communicating with the sensors on your engine. On some cars(volkswagon Passat for example) If you disconnect the battery then the computer will lose all of the settings and will go into limp-in mode. The car will have little power and a top speed of only about 30 miles per hour. The function of limp-in mode is to get you to a place that can repair the car but the car is barely drivable.