[MBZ] S500 Mystery Solved
So the issues finally come to an end, and Im a little put off by my stupidity... Took the car to my trusted indie shop. After two hours of troubleshooting, they came back and said the MAF was sketchy and all of the hoses on the top of the engine were questionable. Fine. I drive it home and it's still running poorly at low RPMs, especially when taking off form a stop. Get above 1500 RPM or 20 MPH, runs like a top. Hmm. So I get a rebuilt MAF from MBUSA along with a full set of hoses for the topside of the engine. Put everything on the car yesterday morning (and boy, were those hoses bad!) and the car still runs like crap. Dang it! After my first test drive, I noticed besides the poor low speed operation, the left side cat was running hot. With this in mind, I'm thinking maybe I have a bad coil on that side of the engine. So I pull the distributor caps to take a look to see if their condition yields any clues Both caps are full of condensation. Grrr. I clean both out, button everything up, drive the car. Runs like new. Granted, the MAF was sketchy and the topside hoses were bad, but I can't help but wonder if the condensation wasn't part of the problem as well What's important is that it's fixed. Lesson learned. Dan ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
Actually, it is normal in this climate. I found on several occasions where the car was parked for 3-4 days (or more) that condensation would sometimes collect in the distributor caps, but a good hard drive would burn it out. This was especially common when my son had the car at school, as the parking structure he parked the car in was a block from the waters of Tampa Bay. This, coupled with the temperature swings and humidity, added to being parked in a shaded area on concrete, created condensation on and under the car regularly. The caps aren’t tightly sealed, and being at the front of the engine and in the airflow to some extent don’t get terribly hot compared to the rest of the engine compartment. Numerous references to the same on the W140 Benzworld forums, too. Here is just one example of many: http://www.benzworld.org/forums/w140-s-class/2300802-distributor-cap-question.html#post11537146 The amount of condensate was very small, but it was enough to affect the spark. Dan On Jun 14, 2015, at 8:12 AM, Jim Cathey jim.cathey...@gmail.com wrote: Not solved. Where did all this moisture come from? That's not normal. Is the crankcase ventilation plugged up such that a little bit of the blowby was coming 'round the shaft? Did you hose down the engine a little too vigorously? Ford any streams? Buy the car in Florida, 'cheap'? -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
ATTABOY! Wilton - Original Message - From: Dan Penoff via Mercedes mercedes@okiebenz.com To: Mercedes List mercedes@okiebenz.com Cc: Dan Penoff d...@penoff.com Sent: Sunday, June 14, 2015 6:01 AM Subject: [MBZ] S500 Mystery Solved So the issues finally come to an end, and Im a little put off by my stupidity... Took the car to my trusted indie shop. After two hours of troubleshooting, they came back and said the MAF was sketchy and all of the hoses on the top of the engine were questionable. Fine. I drive it home and it's still running poorly at low RPMs, especially when taking off form a stop. Get above 1500 RPM or 20 MPH, runs like a top. Hmm. So I get a rebuilt MAF from MBUSA along with a full set of hoses for the topside of the engine. Put everything on the car yesterday morning (and boy, were those hoses bad!) and the car still runs like crap. Dang it! After my first test drive, I noticed besides the poor low speed operation, the left side cat was running hot. With this in mind, I'm thinking maybe I have a bad coil on that side of the engine. So I pull the distributor caps to take a look to see if their condition yields any clues Both caps are full of condensation. Grrr. I clean both out, button everything up, drive the car. Runs like new. Granted, the MAF was sketchy and the topside hoses were bad, but I can't help but wonder if the condensation wasn't part of the problem as well What's important is that it's fixed. Lesson learned. Dan ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
Not solved. Where did all this moisture come from? That's not normal. Is the crankcase ventilation plugged up such that a little bit of the blowby was coming 'round the shaft? Did you hose down the engine a little too vigorously? Ford any streams? Buy the car in Florida, 'cheap'? -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
Is that one of the reasons why Poos normally recommends the 1996-1999 cars with coils on plugs? Mitch. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
Absolutely. Stupid simple to work on, maintain or repair. Dan On Jun 14, 2015, at 3:34 PM, Mitch Haley via Mercedes mercedes@okiebenz.com wrote: Is that one of the reasons why Poos normally recommends the 1996-1999 cars with coils on plugs? Mitch. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
