Automatic transmitions service manual

List of automatic gearboxes used in Citroen BX:

Vehicle	1st Model series	New differential and transfer gear ratio	New kick down cable	Torque Converter
BX 16	2GZ 03		2GZ 10	T3
BX 19 DIESEL up to 07/87	2GZ 04		2GZ 11	M3
BX 19 DIESEL from 07/87	2GZ 14			M3
BX 19 TRS	2GZ 06			E5
BX 19 TRS with catalyst converter	2GZ 19			E5
BX 19 GT,TRS,TRI,GTi	2GZ 05	2GZ 17		E5

Torque converter type is located on front side of converter itself. Manufacturer is FITCHEL and SACHS. Locking speed is about 2200rpm, dia. 330mm and torque multiplication is 2.13.

Oil should be Dexron II class, original oil is sugested TOTAL DEXRON D 20-356. Total oil capacity is about 6.5L but in common oil replacement you can change only 2.5 max 3L. This is why exchanging oil in in automatic gearbox is so important.
It is IMPORTANT that oil level is checked when gearbox oil is hot - about 80'C and engine running. It is good to make 20minutes ride to be sure that oil is hot and there is enought oil in torque converter.
Note: my experience is that you can check the oil level with selector lever in position P and then in position A ( hand brake aplied, or someone else is standing on the brake ). In both lever position should be oil level higher then minimum oil level on disptick.

Towing: you can tow bx with automatic gearbox, but: lever in position N, do not drive over 50km and over 50km/hour speed and add another liter of oil into gear box. This oil must be removed after vehicle is fixed.

Gearbox specifications:

Gearbox type	Counter shafr ratio	Final drive ratio	A* B*	GEAR 1	GEAR 2	GEAR 3	GEAR 4	Reverse
2GZ03 2GZ04	51/59	16/59	A B	10.48 0.096	18.48 0.171	25.31 0.234	34.25 0.317	8.93 0.082
2GZ05 2GZ06 2GZ17	46/53	20/63	A B	12.31 0.114	21.72 0.201	29.75 0.275	40.26 0.372	10.50 0.097
2GZ10 2GZ11 2GZ19	46/53	18/66	A B	10.58 0.097	18.66 0.172	25.56 0.237	34.58 0.320	9.02 0.083
2GZ14	49/51	17/65	A B	11.10 0.102	19.57 0.181	26.81 0.248	36.27 0.335	9.46 0.087

Gearbox type	Acceleration pedal released						Kick down - max acceleration
Gearbox type	1->2	2->3	3->4	4->3	3->2	2->1	1->2	2->3	3->4	4->3	3->2	2->1
2GZ03	20	44	60	53	35	12	56	97	131	105	50	26
2GZ04 2GZ11	14	38	55	51	35	12	43	80	109	98	77	40
2GZ05 2GZ06 2GZ17	17.5	42.5	69.5	61	37	14.5	63	109	154	139	105	59
2GZ10	16	45.5	61.5	54.5	41	13.5	54	101.5	138	125	96	51
2GZ14	15	40	59	55	37	12	46	86	117	105	83	43
2GZ19	15	36.5	60	52.5	32	12.5	54	94	132.5	119.5	90.5	51

Automatic transmition Citroen Service Manual - pdf, english, low quality.

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