I have a 1986 BMW 325es and the car will start then immediately idle down and off. I've replaced the two fuel pumps, fuel pressure regulator, fuel filter and the thermo time switch. Still won't stay running. I did pull one spark plug out and check for spark and confirmed spark. Do I need to check all plugs. Could a bad rotor, cap , plugs , wires, coil cause this. I don't think its fuel delivery. Maybe crank senser , ECU?
HELP!!!!! cars been down for two months now.
-   My problem is almost exactly like yours except i have a 92 BMW 325i and the car starts once for a minute then shuts off once that happens the car won't start for a few hours and the same thing would happen im totally confused i hope this is just due to the fact its cold out i hate mechanical problems-   92BMW325inub
Fuel Injector cold start valve, this will directly affect the problem you are having.
Good luck, and let me know if there is anything else. Also, replacing the distributor cap and rotor are never a bad idea. along with the plugs and wires. with the price of fuel, it never hurts to get better mpg.
i have had the same problem at times. my car would start and then shut off. but i found that i needed oil and check my oil and it was a quater low put in some oil and everything went fine i notices that everytime the oil is low the same thing happens also depending on the position of the car being park meaning that if you are in a down hill position or up hill position i will do the same. so you have to accelarate for 1 minute to have the oil go up. i hope this works
on a 1994 buick park avenue the car when cold and first started the trans makes a loud buzzing noise...
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on a 1994 buick park avenue the car when cold and first started the trans makes a loud buzzing noise in park, when the car is put into drive or reverse will move about 75 feet and stop with what appears to be a slipping trans and will not move until cools down for half hour or so. The trans fluid is black in color and dont know if there is a trouble code that flashes for onboard engine computer. Our first plan is to pull trans pan and inspect, change filter and put pan back on and fill with new fluid. Any other suggestions if this does not work?
2001 PT Cruiser - I was on the freeway driving 75 and the engine light came on and the engine...
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2001 PT Cruiser - I was on the freeway driving 75 and the engine light came on and the engine stopped and will not start again. Can't remember the code number but computer said cam position sensor. Could this be the timing belt?