STALLING PROBLEM TURNED INTO NO START 1990 MB 300 SL

sounds like a fuel filter issue is there an inline filter

Check fuel pump and filter,is it a camry or a truck..

it sounds like the vehicle is starving itself for fuel... if it runs fine in town, or on close trips... sounds like when your on the freeway, and got the gas down its demanding fuel, and not getting what it needs to run, thats why it will start right back up.. if i were you i think i would start with the cheapest thing first and replace the fuel filter.. hope this helps.

Smell of the oil,to see if the fuel injector(spider)is leaking into the crank case,if so,the intake will have to be removed to repair the problem,oh,and change the oil.

it's possible that the fuel pump is failing and begins to have problems once it gets hot. i would have someone check fuel pressure once it is warmed up and having the stalling issue.

It seems that cap of the tank is not letting in air to replace the volume consumed by the engine. Earlier, when it used to stall when1/4 full, there must been less blockage of air but now the air inlet must be really clogged-up,so much so that after being emptied 1/4 of fuel, the negative pressure built up inside the tank is enough to negate the fuel pumps capacity & without gas it will stall the engine which is being deprived of fuel.
One way to make sure that this IS the problem, fill the tank half, do not put the cap try a drive at least for 5 miles & if the engine does not stall, then one can be sure that he cap of the gas tank has to be replaced............sodeep

Could be fuel pressure regulator, fuel injector, sensor, or gasket leak.

hello there

Sounds like the MAF (Mass Air Flow) sensor which also gives similar problems.


Hope this helps, please don't forget to rate me.

Most Likely Coolant temp sensor & connector.Located in cyclinder head under upper radiatior hose.Two wires to connector yellow & black.Replacement sensor is brass (from saturn) Original is ceramic & cracks cause poor performance,stalling,idle issues.Also check plugs & wires for carbon tracking.Replace plugs & wires as a set all at once.Hope this helps

sounds like your fuel pump is going out. One thought might be that the fuel filter is causing enough resistance to over heat the pump. I would check the fule pressure to determine a free flow of fuel.