SSS (Sudden Stalling) Factsheet - Page 3 - PeachParts Mercedes-Benz Forum

thetuffgong · #31 02-03-2013, 01:23 PM

From JD

SSS factsheet:

Car model: 420sel
Year: 1987
Chassis Model: W126
Engine Model: 116?
Mileage(km/miles): 100230
State: NY
Last tune-up (km/miles):100000
-Spark plug: new
-S/P Cable: new
-Rotor: new
-Cap: new

What kind of sudden stalling do you experience?

-Deceleration: Not sure, was at a stop sign rolled through and she calmly stalled but started right up.

- Coasting: At 20mph or so a smooth stall, pulled over and started up again

- Crusing: Same as above

- Acceleration: Same as above

Does all the instrument and light are working in your dashboard?

-Temp gauge: Yes
-Oil pressure gauge:Yes
-Tachometer:Yes
-Fuel Gauge:Yes
-Alternator Gauge:Yes
-Abs light:Yes
-Srs light:Yes
-Engine light:Yes
-O2 sensor light:Yes
-all the other light :Yes
P.S. some model do not have a O2 light sensor but instead they have a check engine light.

STALLING INFO:

How often does it Stall:

She has only stalled on two consecutive days and day 3 no start, first day I rolled through a stop sign and she calmly and quietly shut off, I rolled to a stop and started her up as normal. Second day while doing about 20mph she simply and quietly shut down, pulled over and started as normal. NOW day 3 she is parked and will not start.

-At a certain outside temp(specify): winter in NY average 40 F

Does Any light come on or flikering before it Stall?: No
Engine Temp when stalling: Normal

Outside Temp when Stalling: Winter in NY average 40 F

Fuel gauge reading: Normal

Alternator's reading: Not sure

Ac/Heater on or off: Off

Heated seat on or off: N/A

Does it Start easy after Stalling:

The first two (days) times it stalled she started as if normal, the next day (3) sitting over night she does not start

After stalling when you get the engine running:

-The idle is smooth (specify RPM): Yes between 5-10
-The idle go up and down(specify RPM): No, steady RPM, as above

If the idle go up and down does it settle to normal after: Does not apply

Deceleration Stalling:

-If you put the car in neutral at the same time you decelerate does it stall?? N/A

- If you double pedal (one feet on the brake one feet one the throttle) and keep the RPM over 1500 does it stall?? N/A

Troubleshooting and Diagnostic

Which procedure have you follow to troubleshoot your problem? This fact sheet

Which part(s) have you replaced and why??

OVP, Voltage Regulator (had fluctuations and blew OVP fuse), cap, rotor, wires, plugs, fuel pump relay, fuel filter, just had the time and the parts. This was all replaced prior to stalling.

Do you do any other maintance to the car at same time??

No

How long since you fixe-it?

Did not fix, still can’t get car to start.

Comment:

I did notice after stalling the battery light was on? Could this be a failed or failing alternator, I did have to place the voltage regulator (located on alternator) about 300 miles ago because she broke down on me and blew the OVP fuse. So I replaced the Voltage regulator and OVP. She ran fine up to now. Possible coil? Vacuum leak?

daddi · #32 02-03-2013, 01:53 PM

Quote:

Originally Posted by hk20000

-------------------------------------------------------------
SSS factsheet:

Car model: C220
Year: 1995 1/2 (pre facelift)
Chassis Model: W202
Engine Model: no freaking clue
Mileage(km/miles): 218309
State: BC, Canada
Last tune-up (km/miles): I dunno? Odometer stopped before I bought the car
-Spark plug: OEM Bosch (yes it serviced 12 years, I should find the previous owner and kick his ass)
-S/P Cable: OEM Bosch
-Rotor: None - independent ignition
-Cap: None - independent ignition

What kind of sudden stalling do you experience?

-Deceleration: ( this when your release the accelerator and put your feet on the brake pedal)

Does all the instrument and light are working in your dashboard?

-Temp gauge: Y
-Oil pressure gauge: N/A does not exist
-Tachometer: Y
-Fuel Gauge: Y
-Alternator Gauge: N/A does not exist
-Abs light: Y and on at the time of stall
-Srs light: Y
-Engine light: N
-O2 sensor light: N/A does not exist
-all the other light : Y
P.S. some model do not have a O2 light sensor but instead they have a check engine light.

STALLING INFO:

How often does it Stall:

-Random: 3 out of 20 times at a stop light

-At a certain outside temp(specify): Cold near 0C.

Does Any light come on or flikering before it Stall?:

-ABS light: Y
-Check Engine light: N
-O2 Sensor Light: N/A does not exist

Engine Temp when stalling: 50C

Outside Temp when Stalling: 0C

Fuel gauge reading: 3/4

Alternator's reading: N/A does not exist

Ac/Heater on or off: ACC at 20C

Heated seat on or off: N/A does not exist

Does it Start easy after Stalling: N

-Push the accelerator pedal down and it start after few turn

After stalling when you get the engine running:

-The idle go up and down(specify RPM): 300-400RPM

If the idle go up and down does it settle to normal after:

-The engine temp reach (specify Temp): 80C

Deceleration Stalling:

-If you put the car in neutral at the same time you decelerate does it stall?? N

- If you double pedal (one feet on the brake one feet one the throttle) and keep the RPM over 1500 does it stall?? N

Troubleshooting and Diagnostic

Which procedure have you follow to troubleshoot your problem?

-Thread from this Forum(Specify, give the link)
W202 speedometer issue - Searched but cannot find answer - PeachParts Mercedes ShopForum

Which part(s) have you replaced and why??

- OVP, because there was no CEL, broken speedometer and ABS light was on. ABS was not functional at the time of the stall as well.

Do you do any other maintance to the car at same time??

-Installed K&N air filter. Don't think it is at all related.

How long since you fixe-it?

-A day

Comment:
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OVP is a dodgy piece of equipment that should definitely be reinvented so this kind of embarrassment can be avoided. I stalled in front of another W202 and he honked at me....

Your problem is fairly simple but expensive, you need a new engine wiring loom.

daddi · #33 02-03-2013, 02:04 PM

I fixed a stalling problem in my 300TE the other day, that was a bad connection to the Throttle Position Sensor.

thetuffgong · #34 02-06-2013, 10:11 AM

I pulled out the fuel pump relay, wire jumped #7+8 and heard fuel flow and she started right up. I previously dismiss the fuel pump relay as the SSS cause because I replaced it last year. I guess I'll try the old fuel pump relay I still have that I replaced if not order a new one. Goes to show new parts go bad don't be so quick to ignore a step in diagnosis because you replaced that part already, like me..
JD