|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Engine cutting out when it reaches 80 (Normal working temperature)
1999 MB G320 V6 M112
Without any warning, at the traffic light, the engine suddenly died out... After standing for about 15-20 minutes it got started up as if nothing had happened, drove for 7-10 minutes and it died out again, and "Check Engine Electronics" lit up. Again - stood for 15-20 minutes, and again it got started as if nothing had happened and "Check Engine Electronics" is on all the time. To me it looks like there something is related to the temperature - when the engine is cold, the car starts up and works without problems (there is a barely noticeable, periodical engine shaking, as if it is misfiring), but as soon as the temperature rises, it immediately stalls. When I am trying to start it again, the starter turns but the engine does not start. At first I blamed at the lack of fuel (fuel pump, etc.) but when I climbed under the car while the engine is running, you can hear the pump working, and what's with the "Check Engine Electronics" then? I will be very grateful for a practical advice, where to look for the problem, what to repair, what part should I replace? Thank you in advance... |
|
| |
|
J.R.
Elite Veteran
Date registered: Apr 2006
Location: Southern Maryland
Vehicle(s): 00 G500, 09 911 4S, 11 Cayenne S, 86 280GE (sold)
Posts: 828
| RE: Engine cutting out when it reaches 80 (Normal working temperature)
I would be suspicious of the K40 Relay, if your vehicle has one. |
|
| |
|
DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| RE: Engine cutting out when it reaches 80 (Normal working temperature)
M112 engine?
I would start with replacing the Crankshaft Position Sensor.
|
|
| |
|
Luky
Elite Veteran
Date registered: Apr 2006
Location: Bratislava, Slovakia, EU
Vehicle(s): 300GE LWB auto, E320CDI 4M, VW Polo Classic 1.6
Posts: 1062
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
If the check engine light is on I would start with connecting it to STAR  |
|
| |
|
bluegg
Veteran
Date registered: Nov 2016
Location: Oro-Medonte, Ontario, Canada
Vehicle(s): 1985 300GDT, 2003 Beetle 1.8t S, 1982 F350 SC Dual
Posts: 141
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
Check fuel supply after pump. If it diminishes over time may be filter clogging when debris sucked to filter then it sits debris falls away and cycle begins again.
Could be primary or secondary filter or sender in tank as well as lines along the way.
Check engine light may come on because of the starvation.
|
|
| |
|
AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| RE: Engine cutting out when it reaches 80 (Normal working temperature)
The K40 is the likely culprit. If it hasn't been replaced since new, now is the time. The old one can be refurbished as a hot spare. The CPS is the next candidate. Neither of these problems can be diagnosed with the STAR. As far as the STAR diagnostics are concerned, the K40 defect would show as a ECU not present on the STAR, but only when hot, once cooled down there would be no symptoms. The CPS just looks like the engine stopped (to the STAR system). When cranking it should show an RPM of 0 in the STAR, but again, that problem will likely go away when it cools down.
|
|
| |
|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
Thank you very much for the information. Because of the age of the truck, I think it will not hurt replacing both - CrankShaft Position Sensor and the K40 Relay. Also I will replace CamShaft Position Sender Unit and Temperature sensor (I'm sure it was neve replaced since new). And in the nearest future I will check and if needed replace fuel supply components - Fuel Pre-Filter, Sender Unit, Fuel Filter, Fuel Pump, Seals and Hoses. I will post my results, letting this forum know what fixed the problem... Once again, Thank you all for the advice.
|
|
| |
|
DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
IBEX - 7/1/2018 12:15 PM
Thank you very much for the information. Because of the age of the truck, I think it will not hurt replacing both - CrankShaft Position Sensor and the K40 Relay.
If you are adept with a soldering iron, you might just want to check and resolder any bad points on the K40, instead of replacing it.
However, I would start with the Crankshaft Position Sensor and do each replacement separately. That way you will know what does or does not solve the problem. |
|
| |
|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
Thank you Dutch, that is how I am going to do it. I will start with replacing Crankshaft Position Sensor, check for the results, and then move on to the replacement/refurbishment of the K40, and so on... |
|
| |
|
J.R.
Elite Veteran
Date registered: Apr 2006
Location: Southern Maryland
Vehicle(s): 00 G500, 09 911 4S, 11 Cayenne S, 86 280GE (sold)
Posts: 828
| RE: Engine cutting out when it reaches 80 (Normal working temperature)
It has been my experience that a hot cps that is failing causes a no start condition and will not cause a shut down condition.
The k40 relay on the other hand has caused no start and shutdown conditions.
Consider first replacing the k40 and test. Then replace the cps regardless. There are a handful of parts that if swapped out on a mileage or time basis will yield a very reliable truck. K40, cps, steering lock assembly, Maf and tps come to mind. Good hunting. |
|
| |
|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
Тhe hunt has begun. Already ordered the following parts;
Mercedes Multi Purpose Relay - (Stribel) - 2105400072 - 1 - $121.39
Mercedes Crankshaft Position Sensor - (Bosch) - 0031532728 - 1 - $22.99
Mercedes Engine Camshaft Position Sensor - (Hella) - 0041536928 - 1 - $97.99
Mercedes Camshaft Position Sensor O-Ring - (Bosch) - 1230210027 - 1 - $1.06
Mercedes Coolant Temperature Sensor - (Genuine Mercedes) - 0999053800 - 1 - $18.40
Mercedes Voltage Regulator - (Bosch) - 1197311242 - 1 - $28.84
And also in the very near future I am planning to update the fuel supply system (Fuel Pre-Filter, Sender Unit, Fuel Filter, Fuel Pump, Seals, Lines and Hoses)... |
|
| |
|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
I have removed Crankshaft Position Sensor - it looks very dirty and oxidized.
Also I have removed the K40 Relay, and inspected it very thoroughly. Considering that manufacture date printed on it is 04.03.98, to my surprise it looks like new. Visually, all contacts and all inside parts are in very good and clean condition. |
|
| |
|
AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
If you have the CPS out, replace it. Look closely at the solder side of K40 circuit board with a magnifying glass. Any sort of disturbance in the large solder joints is a problem. http://www.pelicanparts.com/techarticles/Mercedes-SLK230/68-ELEC-K4...
|
|
| |
|
J.R.
Elite Veteran
Date registered: Apr 2006
Location: Southern Maryland
Vehicle(s): 00 G500, 09 911 4S, 11 Cayenne S, 86 280GE (sold)
Posts: 828
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
How many miles on the truck? |
|
| |
|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
I have a little over 111,000 miles on the truck |
|
| |
|
BlueG
Elite Veteran
Date registered: Aug 2009
Location: DC
Vehicle(s): 2003 G500
Posts: 714
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
CPS shut my M113 down when hot. Drove home and put one I had ordered long ago. That was probably 5-6 years ago and 50K+. Last month I ordered another fresh CPS and will swap out as soon as I get a hot shutdown. |
|
| |
|
AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
The CPS lives a tough life in V engines. Very close to the exhaust manifold. Inline engines don't seem to have that problem, ever.
|
|
| |
|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
An UPDATE... Finally received the parts. Started from the least expensive one - CrankShaft Position Sensor. Because of the location and limited space, It was a pain in **** to remove the old CPS, and to install a new one. But it's done... For the sake of the experiment I left the old K40 relay in the truck. Engine cranked up with no problems and worked for the half of the day (idling on my backyard, as I did not want to risk driving anywhere yet), no more "Check Engine Electronics" message. But noticeable, periodical engine shaking is still there (maybe it was there before, I just did not notice it, it's hard to tell now)... I am still planning to replace K40 relay and other sensors listed in my previous post (just to be on a safe side), and keep the old ones as an emergency backup. |
|
| |
|
King_GH
Extreme Veteran
Date registered: Oct 2011
Location: London
Vehicle(s): 95 G300 RHD
Posts: 324
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
Hey, before you start making all those changes, I had a similar issue when I drove to mainland Europe in June. The car would stop in traffic at junctions and dangerous roundabouts. I spent hours deliberating and investigating .... turns out some corn juice may have made it's way into my engine. Whatever you call it, it contaminated my fuel. After driving for miles and finding a high octane fuel pump, it all went away like nothing ever happened. Just like that! Don't forget to change where you buy fuel for a while. |
|
| |
|
IBEX
Member
Date registered: Jan 2015
Location: Gulf Shores AL
Vehicle(s): 1999 MB G320, 1999 MB E300TD
Posts: 43
| Re: Engine cutting out when it reaches 80 (Normal working temperature)
Thank you. Yes I am very careful about choosing gas station. |
|
| |
