1997 E420 issues
Thread Starter
Junior Member
Joined: Jan 2009
Posts: 36
Likes: 0
97 E420
1997 E420 issues
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
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
Thread Starter
Junior Member
Joined: Jan 2009
Posts: 36
Likes: 0
97 E420
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.....
& 
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.....
&
Thread Starter
Junior Member
Joined: Jan 2009
Posts: 36
Likes: 0
97 E420
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.
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.
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