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ZF gearbox faults, root causes & Troubleshooting

XF and XFR ( X250 ) 2007 - 2015

ZF gearbox faults, root causes & Troubleshooting

 
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Old 11-01-2017, 04:23 PM
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Default ZF gearbox faults, root causes & Troubleshooting

With ref to Jim's request for stickies I think

that this should be included:

Everything about your ZF 6HP26, 6HP19, 6HP28 transmission issues | BMW LOGIC7
 
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Old 11-02-2017, 11:51 AM
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Originally Posted by meirion1 View Post
With ref to Jim's request for stickies I think

that this should be included:

Everything about your ZF 6HP26, 6HP19, 6HP28 transmission issues | BMW LOGIC7
Agreed and should be a sticky in the X150 forum as well. Thanks for posting.

Interestingly, there is a link for testing out the MOST BUS network too which would also benefit X150 owners.

This should also be added if it isn't already.
 
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Old 11-07-2017, 07:30 PM
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Thought I could add a comment here on what I suffered

04 xj8 n/a

(She) cat threw the abs light

10 miles later , cat went into transmission gear faults and basically wouldn't shift out of second gear . Felt incredibly a bit like the trans was toast clanks and squeals and all kinda ****. So I replaced the driver rear abs sensor with a rock auto part and boom , all was perfect again


transmission didn't like what the abs sensor wasn't saying and acted up for it
 
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Old 11-07-2017, 11:19 PM
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Originally Posted by meirion1 View Post
With ref to Jim's request for stickies I think

that this should be included:

Everything about your ZF 6HP26, 6HP19, 6HP28 transmission issues | BMW LOGIC7
spread the wealth guy's .
this should definitely be in the s type stickies as well !!!

thanks
 
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Old 11-09-2017, 09:26 AM
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Originally Posted by slownlo View Post
Thought I could add a comment here on what I suffered

04 xj8 n/a

(She) cat threw the abs light

10 miles later , cat went into transmission gear faults and basically wouldn't shift out of second gear . Felt incredibly a bit like the trans was toast clanks and squeals and all kinda ****. So I replaced the driver rear abs sensor with a rock auto part and boom , all was perfect again


transmission didn't like what the abs sensor wasn't saying and acted up for it
Last week a similar series of events happened to my 2008 XJR. Trip #1 ABS fault & 20 miles home. Trip #2 ck engine light on start, after 2nd shopping stop 2nd, neutral, repeat, repeat, gearbox fault and 10 miles home in 2nd. Car has been at dealer for 3 1/2 days. Haven't heard anything.
 
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Old 11-29-2017, 03:21 PM
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Can we get a run down on behaviors to look out for and/or symptoms?

I have 80k miles on my supercharged 2010 5 liter, and this makes me nervous.
 
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Old 12-01-2017, 12:29 PM
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On the S-Type, almost any engine fault (emissions etc) has been known to upset the ZF - because the PCM & TCM co-operate and can't do that properly with faults occurring.

Fix any engine faults before worrying about the trans!
 
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Old 12-01-2017, 04:10 PM
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Hi, I have just rebuild transmission of jaguar XF 4.2 Supercharged V8
1) new gearbox without valvebody (older one had defect -on drag start something spinned and metal sounds inside, no torgue at those moments also very slight rmp jumping when driving in 6 gear 1400rpm uphill)
2) valvebody rebuild- a)new solenoids (except green mv3 and black mv2 on the other side) b) new acumulators pistons (old ones were worn all except one) separator palte left the same as it looks realy good.

before rebuilt car shifted pretty good, no errors.after rebuild (gearbox adaptation reset done and adaptation cycle as well) there is some diference in better way. they are slightly better.

but the same problem stayed with shifting- when i drive very slowly gears should be changed in 1400-1600rpm 1-2 fine, 2-3 fine then 3-4 does not changes until 1900-2000rpm and before change is pause, like computer waits(sometimes 4-5seconds. sometimes if i do not push gas or especialy try to release gass it changes at lower. the same (maybe even worse symptom is 4-5. and 5-6 again is prety fine. it makes even worse when i switch to manual mode- i cant change 3-4 and i think 2-3 as well if i will not put rpm more than 1800RPM jaguar says my engine shoudl change at 1400-1600rpm.

if i drive agresively all gears before and after rebuild swithes fast and smooth. i look at sonax kit- what else needed to be changed, where problem lies? or it could be electronic problem?

thanks in advance.
 
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Old 09-02-2018, 01:59 PM
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could be oil seals on the gear solenoid, or the solenoid filter seive, at low SPEED the oil presure is lower so will take time to shift, on higher rmp presure is higher so will shift fast,

ALSO could be gneral low pressure, but if other gears OK, will be around the solenoid for that gear issue,

alex
 
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