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post #1 of 22 (permalink) Old 12-09-2018, 13:51 Thread Starter
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Fiat Comformatic Problem

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My Fiat comformatic gearbox has come up with `no gears available`.Has anyone got any pointers to what could cause it.Im thinking its an electrical problem and had an auto electrician plug in a diagnostic tool which brought up some codes but not precise enough to point to exactly where the problem is.Any ideas would be much appreciated.
John
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post #2 of 22 (permalink) Old 12-09-2018, 14:25
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Isn't it cable operated in the first instance, similar to the proper gearbox? could be a mounting a bit slack as can happen on the manual shifter.
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post #3 of 22 (permalink) Old 12-09-2018, 15:27
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No experience with the Comfortmatic, but when I've had a problem with my Sprintshift I found that the Mercedes commercial dealership was able to diagnose and sort out the problem very quickly and surprisingly economically.

To me, this is a time when it really does pay to go directly to the main dealer.

They have proprietary diagnostic equipment which gives them more information

Andrew
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post #4 of 22 (permalink) Old 12-09-2018, 16:11
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Isn't it cable operated in the first instance, similar to the proper gearbox? could be a mounting a bit slack as can happen on the manual shifter.
The proper gear box is hydraulic
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post #5 of 22 (permalink) Old 12-09-2018, 18:58
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The proper gear box is hydraulic
Hydraulic ???
The clutch release is hydraulic the standard (not comformatic) gear change is via cables.

.
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post #6 of 22 (permalink) Old 12-09-2018, 21:37 Thread Starter
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Quote:
Originally Posted by Pudsey_Bear View Post
Isn't it cable operated in the first instance, similar to the proper gearbox? could be a mounting a bit slack as can happen on the manual shifter.
Thank you Kev,another thing to check.
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post #7 of 22 (permalink) Old 12-09-2018, 21:39 Thread Starter
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Originally Posted by androidGB View Post
No experience with the Comfortmatic, but when I've had a problem with my Sprintshift I found that the Mercedes commercial dealership was able to diagnose and sort out the problem very quickly and surprisingly economically.

To me, this is a time when it really does pay to go directly to the main dealer.

They have proprietary diagnostic equipment which gives them more information

Andrew


Thank you Andrew,that is an option I am going to have to use it seems.
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post #8 of 22 (permalink) Old 12-09-2018, 21:41 Thread Starter
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I think it is hydraulic.I have found a leaking clutch master cylinder which I am looking at.
Hideous price for a new one though.
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post #9 of 22 (permalink) Old 13-09-2018, 07:42
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As rayc said earlier the actual mechanics of the gear selection is via electro hydraulics, so if you've found something leaking that could well be your problem.

Although how a leaking master cylinder would affect the gearbox operation?

.

John
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post #10 of 22 (permalink) Old 13-09-2018, 07:54
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As rayc said earlier the actual mechanics of the gear selection is via electro hydraulics, so if you've found something leaking that could well be your problem.

Although how a leaking master cylinder would affect the gearbox operation?

.
I was referring to the clutch operation being hydraulic with the manual gearbox. The gear selection is of course mechanical. I believe that on the Comformatic there is a lot more hydraulics to operate the clutch and to select the gears.
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