Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: Michaelg on December 04, 2015, 17:34:28

Title: Engine stalling at idle when first excellerating
Post by: Michaelg on December 04, 2015, 17:34:28

When I put my 1970 280 sl roadster in drive and hit the gas is stalles repeatedly.
It idles clean when in park. Any ideas for trouble shooting?

Title: Re: Engine stalling at idle when first excellerating
Post by: stickandrudderman on December 04, 2015, 17:46:03

Go to the technical manual on this site and follow the linkage tour.

Title: Re: Engine stalling at idle when first excellerating
Post by: Garry on December 04, 2015, 22:04:29

Unfortunately you need to be a Full Member to be able to access the Linkage Tour in the Tech Manual. Not everything is free.

I assure you that joining as a Full Member will return you the small cost of membership ($30) just in setting your car up correctly.  You will also have access to Pagoda Notes and will receive Pagoda World twice a year.


Garry
Membership Administrator

Title: Re: Engine stalling at idle when first excellerating
Post by: Michaelg on December 18, 2015, 20:35:31

I am signing up.
Have a nice xmas
Cheers

Michael

Title: Re: Engine stalling at idle when first excellerating
Post by: wwheeler on December 19, 2015, 00:45:14

Good decision to join! This site is the single most valuable resource I use for my W111. Imagine how incredibly valuable it is for the W113 owner!

My 280SE hesitated at a standing start when I bought it. It was lean at idle but......there were many problems causing this and the linkage tour and the other aides here helped resolve it. Good luck. 

Title: Re: Engine stalling at idle when first excellerating
Post by: Cees Klumper on December 19, 2015, 08:23:34

One of the possible causes is the constant speed solenoid (CSS), a widget that mechanically increases idle on automatic and AC equipped cars, to overcome the load on the engine that would otherwise reduce idle RPM. It's easy to check, in addition to doing the linkage tour. Good luck and keep us posted.

Title: Re: Engine stalling at idle when first excellerating
Post by: ja17 on December 20, 2015, 03:29:23

If the car is coming out of a long hibernation, the Warm Up Device (WRD) may be stuck. Does it act this way with cold engine, warm engine or both?

Title: Re: Engine stalling at idle when first excellerating
Post by: Michaelg on January 10, 2016, 17:34:33

the warmer it gets the more it stalls.

Title: Re: Engine stalling at idle when first excellerating
Post by: Bonnyboy on January 10, 2016, 20:04:19

Sounds like a fuel problem so I would check electrical.   

Just a shot in the dark but have you checked the condenser/coil/points and all electrical wires/connections for corrosion/tightness or broken internal wires?  If it gets worse when hot to me that suggests an internal break somewhere.     

Title: Re: Engine stalling at idle when first excellerating
Post by: wwheeler on January 11, 2016, 00:37:34

Quote from: Michaelg on January 10, 2016, 17:34:33

the warmer it gets the more it stalls.

I would check to make sure it isn't lean @ idle when fully warm. When cold, the engines have devices that richen the mixture. Once warm, they lean out to the normal preset mixture. What is your idle speed in park?

Title: Re: Engine stalling at idle when first excellerating
Post by: Michaelg on February 01, 2016, 12:18:33

you mentioned that i should check CSS. i am still stalling.
is there an easy way to check this selonoid.

Title: Re: Engine stalling at idle when first excellerating
Post by: Cees Klumper on February 01, 2016, 20:25:12

When you put the car in drive you should see the small rod coming out of the CSS extend to move the linkage by a couple of millimeters so as to increase the idle. You may need another person to do this test, as you can't see the CSS engage when you're inside the car, putting it into gear, plus you want to apply the brake when you do. Good luck, ithere's a host of possible causes here, work through them one by one.

Title: Re: Engine stalling at idle when first excellerating
Post by: Benz Dr. on February 01, 2016, 21:05:33

Bad spark plugs will do it every time.