Ricco

Hello all, I'm new to this forum. I have a 97 E420 and it's been acting up.
Symptoms: Low idling, shuts off @ traffic light, ASR. ACC Skid control (error), CEL, shuts off while warming up.

I took the car to autozone 2day to have diagnostics done and got codes
P0115 & P0100. Cleared codes, drove around for 10 mins, came back same codes present.

P0115: ECT (Engine Coolant Temp)

Resolution1: Check wiring & connector

Resolution2: Sensor open or shorted-replace sensor

P0100: MAP/BARO or MAF sensor condition

Resolution1: Vac hose off, cracked or passage blocked-Engine mechanical timing condition.

Resolution2:Throttle body intake tube loose, off, or cracked.

Resolution3: BARO/MAP defective

Resolution4: VAF (Vane Air Flow) MAF sensor dirty or defective.

Should I start with the ECT, since that's the code that came up first?

Any help would be greatly appreciated. TIA

Ricco

Hello all. I contacted the dealer to purchase an Engine Coolant Temp sensor but to no avail. They said that they have a temp sender switch. Is that the same thing?

Ricco

Just found out that my car requires 2 temp sensors...does anyone have any input on this?

Ricco

Does anyone have a diagram where these sensors are located...I searched but only found

location for CPS. I do not really want to take to the stealer for a simple fix. TIA.

Ricco

Well I finally fixed my E420.

1. Replaced ECT sensor $25 PN #011-542-51-17-M85

2. Replaced thermostat $30 PN #119-200-00-15-M2

3. Replaced Air Mass Sensor $375 PN #000-094-07-48-M14

Oh I also changed the coolant as a preventative maintenance.

Took a while, since I had to research endlessly & patiently about my MB's blueprint

I hope this info helps someone who might have these same issues in the present or

future.

My Benzo runs better than it ever did.

I feel so..... &

Ricco

Additional Info I forgot to mention.

These are miscellaneous items:

Aluminum washer/ring (thermostat) $0.05 (yep a nickel) PN #007603-014104

Loom ties (2) @$3.50/piece = $7.00 PN #006-997-06-90

They were minor so I forgot to mention them.

Cheers.

BENZITCH

Glad you put this info out here.

So nice when it all comes together.

Delux2d

Do you know where the sensors are located?

DooWilly

How did you put the thermostat on?H

DooWilly

RiccO... I can't get to the bottom bolt in the thermostat houses By The Oil stick, how did you get that out?