1992 500sl Car dies after 50 mins, while in park for 2-5mins

[lymlyt]

Test Scenario:
1. Start engine, leave in park for about 50-60 mins.
2. After 50-60 mins with emergency break on, apply break, shift to drive and wait.

“OBSERVATION: After above steps, the engine seems to “struggle” to run. RPM is just over 500RPM, oil pressure fluctuates below 1 bar,
And vibrates the car.”

3. Within about 5 mins the engine will die/stall.
4. Engine will restart properly.
5. Reperform step immediately and the engine will die/stall again, and often 3-4 times.

@EPR Test: Saturday July 23
1:10 pm: Start engine and let idle in park.
2:00 pm: with emergency break on, apply break, shift to drive and wait.

Test 1: Time to die/stall: 1 Min 35 Sec

Immediately restart engine, with emergency break on, apply break, shift to drive and wait.
Test 2: Time to die/stall: 2 Min 43 Sec

Immediately restart engine, with emergency break on, apply break, shift to drive and wait.
Test 3: Time to die/stall: 0 Min 50 Sec

Immediately restart engine, with emergency break on, apply break, shift to drive and wait.
Test 4: Time to die/stall: 4 Min 0 Sec

Parts replaced:


QTY Replaced:
1 OVP Relay

2 Distributor Caps and Rotors & dust shields
1 Ignition Wires
8 Spark Plugs

2 Engine Mounts
1 Transmission Mount