Heat in the cabin - Page 2 - Mercedes-Benz Forum

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post #11 of 13 (permalink) Old 10-07-2013, 09:44 AM
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Date registered: Jan 2009
Vehicle: anywhere from '52 300 to 1990 560SEL,and a '93300TE nothing newer, too much trouble....
Location: N L A County
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US 3.5

Originally Posted by om diesel View Post
Hi JNP,Engine in your vehicle is incorrect, should be M189,all Aluminium straight 6cyl. Don't know where u r,but if in U S A, 3.5 ltr engine never officially imported, only de. compt 4.5 ltr. If Eng. No. is correct comes out of a 280 SE 3.5 rated @ 200HP DIN when new. In relation to upshift probs u must identify which autotrans is behind your M116.980, K4A025 300SE, K4A040 or W3A040.
Re this car: that 3.5 was not the original engine and as pointed out correctly, it should have been the M189 3.0 liter motor.
Just a moot point in regards to the topic in the thread, but worth correcting:
The 3.5 was officially imported to US for a couple of years (1969/70 +) before the 4.5 came out(1971/2). It was in the 300SEL 3.5 , the 280 SE 3.5 (Coupe only) and maybe some early 350SLs (official U.S. version). It is correct however, that the 3.5 sedans were NOT official US cars.
Re: transmission, it probably is the one that came with the motor (3.5).
It's worth checking, if the body, mainly the transmission tunnel was modified to fit the bigger transmission, especially the automatic as in JNP's case.

Last edited by 6punkt3; 10-07-2013 at 10:03 AM.
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post #12 of 13 (permalink) Old 10-07-2013, 10:01 AM
BenzWorld Member
Date registered: Jan 2009
Vehicle: anywhere from '52 300 to 1990 560SEL,and a '93300TE nothing newer, too much trouble....
Location: N L A County
Posts: 361
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Quoted: 11 Post(s)
what transmission ?

Originally Posted by JNP View Post
Hi Alex,
Thanks for getting back to me on both issues.
The VIN chassis number is: 112-021-22-008380. Engine no is 116 980 22 012 841. Chassis no for gear box, rear axel and suspension is 108 857 22 011 399 (it was changed from air to spring suspension).
I dont have any history, but can tell you that it was restored in 1990's.
The engine is a 3.5 V8.
It is obvious that the car must have originally been a column shift, but this is now a floor shift auto. The gears are not shifting correctly - it seems to struggle getting into 4th gear. - any advice?

Thanks again,
We obviously need to know the type of transmission.
The problems with modified cars is, was the work done correctly ?
By this I mean , IIRC the 300 transmission shifting is regulated by vacuum and rpm, while the 3.5 transmission had electrical signals from the throttle position sensor among others ??
A lack of proper wiring may be your problem here.
I would try to track down (if it's not too difficult) the previous owner and through him the mechanic who did the work.
Maybe you got a folder with invoices and work orders ?

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post #13 of 13 (permalink) Old 10-07-2013, 11:31 AM Thread Starter
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Date registered: Oct 2013
Vehicle: 1965 300se Coupe
Location: UK
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(Thread Starter)

It seems that the transmission fluid was leaking - hence the issues with changing gears - it was fine as soon as I put some in - but the car has gone away to get the problem addressed. They will also look into the heat issue and the stalling at traffic signals.
Thanks to everyone who has replied to my 'calls for help'!

Although the car is not entirely original, looking at it just brings a smile to my face - I truly hope that the ride issues can be fixed to match that....

All the best to you.
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