S430 cranks but doesn't start, intermittent.
Thread Starter
Newbie
Joined: Nov 2019
Posts: 11
Likes: 2
From: Orlando
2011 E350 Wagon and 2006 SLK55
S430 cranks but doesn't start, intermittent.
It started with CAM shaft sensor fault code. Changed CAM shaft sensor.
Then, it would at times crank but not start, so changed the Crankshaft sensor. That didn't solve the problem. It's important to note that this is intermittent, and it happened when the car was cold in the morning, as well as when the car was parked after short drives as well as after long drives. Just no predicting when it would happen. More importantly, that car doesn't misfire, lose power or turn off by itself.
So next I changed the fuel filter. Problems persists. I've also scanned the car and no faults come up.
I put back the old CAM shaft sensor, and it threw the fault immediately as well as continued with the intermittent start issues, so I put the new senors back on.
I put in a new battery, plugs/coils and cleaned the maf within the past six months.
I just don't know what I should try next, any ideas please?
Thanks
Then, it would at times crank but not start, so changed the Crankshaft sensor. That didn't solve the problem. It's important to note that this is intermittent, and it happened when the car was cold in the morning, as well as when the car was parked after short drives as well as after long drives. Just no predicting when it would happen. More importantly, that car doesn't misfire, lose power or turn off by itself.
So next I changed the fuel filter. Problems persists. I've also scanned the car and no faults come up.
I put back the old CAM shaft sensor, and it threw the fault immediately as well as continued with the intermittent start issues, so I put the new senors back on.
I put in a new battery, plugs/coils and cleaned the maf within the past six months.
I just don't know what I should try next, any ideas please?
Thanks
MBWorld Fanatic!
Joined: Jan 2008
Posts: 6,150
Likes: 533
Mercedes
It started with CAM shaft sensor fault code. Changed CAM shaft sensor.
Then, it would at times crank but not start, so changed the Crankshaft sensor. That didn't solve the problem. It's important to note that this is intermittent, and it happened when the car was cold in the morning, as well as when the car was parked after short drives as well as after long drives. Just no predicting when it would happen. More importantly, that car doesn't misfire, lose power or turn off by itself.
So next I changed the fuel filter. Problems persists. I've also scanned the car and no faults come up.
I put back the old CAM shaft sensor, and it threw the fault immediately as well as continued with the intermittent start issues, so I put the new senors back on.
I put in a new battery, plugs/coils and cleaned the maf within the past six months.
I just don't know what I should try next, any ideas please?
Thanks
Then, it would at times crank but not start, so changed the Crankshaft sensor. That didn't solve the problem. It's important to note that this is intermittent, and it happened when the car was cold in the morning, as well as when the car was parked after short drives as well as after long drives. Just no predicting when it would happen. More importantly, that car doesn't misfire, lose power or turn off by itself.
So next I changed the fuel filter. Problems persists. I've also scanned the car and no faults come up.
I put back the old CAM shaft sensor, and it threw the fault immediately as well as continued with the intermittent start issues, so I put the new senors back on.
I put in a new battery, plugs/coils and cleaned the maf within the past six months.
I just don't know what I should try next, any ideas please?
Thanks
Thread Starter
Newbie
Joined: Nov 2019
Posts: 11
Likes: 2
From: Orlando
2011 E350 Wagon and 2006 SLK55
Bottom line, this is a $3-4k car, so spending anything over a thousand just doesn't compute for me.
Could it be the fuel pump?
Super Member
Joined: Jun 2016
Posts: 589
Likes: 60
From: Snowville, ID
W212 E350; W166 GLC300; W164 ML550; W164 ML63; W221 S65; W220 S430; Escalade ESV
Sounds like you are just throwing parts blindly at the problem. Old S is a low price car but not a cheap car. Perhaps it's time for a diagnostic at the shop?
MBWorld Fanatic!
Joined: Jan 2008
Posts: 6,150
Likes: 533
Mercedes
its your anti theft system preventing starting and it’s the 4 theft relevant parts which need to be swapped
the 4 matched parts sell for $350 on ebay . that’s Most likely what you need . And if they don’t fix the problem you can return them or resell them on ebay for about the same price As everyone always needs them . This is a very common problem
Last edited by tusabes; Jul 13, 2020 at 01:24 AM.
Thread Starter
Newbie
Joined: Nov 2019
Posts: 11
Likes: 2
From: Orlando
2011 E350 Wagon and 2006 SLK55
no
its your anti theft system preventing starting and it’s the 4 theft relevant parts which need to be swapped
the 4 matched parts sell for $350 on ebay . that’s Most likely what you need . And if they don’t fix the problem you can return them or resell them on ebay for about the same price As everyone always needs them . This is a very common problem
its your anti theft system preventing starting and it’s the 4 theft relevant parts which need to be swapped
the 4 matched parts sell for $350 on ebay . that’s Most likely what you need . And if they don’t fix the problem you can return them or resell them on ebay for about the same price As everyone always needs them . This is a very common problem
Also, had the car scanned by Star and didn’t bring up any faults.
I think I’m going to replace the CPS again in case mine is faulty. What about CPS wiring, could it be the culprit?
