Car stalled a few times while my mom was driving (it had just reached operating temp a few miles from home). She got it home and parked it. After sitting a few days, it started right up today but after ~5-10 mins, after it was warmed up it slowly died and I couldn't restart it. Checked fuel pressure by cracking line at fuel distrib and also at injector, good pressure. Next checked spark at plug, strong. Sprayed starting fluid into throttle body, nothing, not even a pop. Fuel pump is coming on, checked relay and OVP. Let it sit/recharged battery for 1 hr. Got it to light with throttle fully open, felt like it was flooded but plugs were dry when I earlier checked for spark. Revved it up to redline a few times, settled into nice idle. I checked for air leaks all around the CIS-E rubber with propane. Nothing. Let it idle for an hour and it restarted just fine.

Any ideas what I should be looking into? Don't want to break down during a test drive.

Thanks.

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1988 300E

Does the crank position sensor ever go bad?

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1988 300E

sure does.... easy change out

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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]

Dying when reaching operating temp is almost always cap and rotor.

Check crank sensor just to eliminate it. It should ohm out at 800-1200? Someone please correct me if those figures are wrong.

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2

Cap and rotor and wires and plugs recent. However, I did pull off the cap and rotor to inspect and clean. I'll check crank sensor next. Thanks.

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1988 300E

How recent is recent? Where they oe? Aftermarket? Off brand?

You are losing spark when the car warms up. 90 percent of the time it's in the cap or rotor

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2

~5K miles ago. All Bosch.

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1988 300E

Crank Sensor ohms out at ~850. Car seems to run fine now, hot or cold. I ordered an extra fuel pump relay just to be safe.

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1988 300E

Test it when the engine is warm and cold. If there is little difference the. Cps is good

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2