RE: P1621 fault code - but my car has been off the road for 2 months! Please help.

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Jaguar >> Jaguar Models >> XJ6 & XJ12 >> RE: P1621 fault code - but my car has been off the road for 2 months! Please help.

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RE: P1621 fault code - but my car has been off the road... - 3/12/2008 6:36:59 PM    jag_genius Posts: 1735 Joined: 6/30/2007 Status: offline had several problems .. found fuel pump faulty.. ecm relay.. crank sensor..ecu _____________________________ www.stores.ebay.com/JAG-GENIUS Jaguar Master Tech ASE Master Tech (in reply to jag_genius) Post #: 21

RE: P1621 fault code - but my car has been off the road... - 3/13/2008 11:06:23 AM    Keith   Posts: 136 Joined: 1/3/2008 Status: offline Hey, didn't realize this was going to be a trick question!  Geeez, how unfair is that, 3 problems, I have enough problem dealing with one! _____________________________ Keith Hodges Little Rock, Arkansas 85 XJ-6, 95 XJS 2+2 Conv 6.0 V-12 (in reply to jag_genius) Post #: 22

RE: P1621 fault code - but my car has been off the road... - 3/13/2008 1:11:19 PM    jag_genius Posts: 1735 Joined: 6/30/2007 Status: offline i meant on several different cars..not all at once lol _____________________________ www.stores.ebay.com/JAG-GENIUS Jaguar Master Tech ASE Master Tech (in reply to Keith) Post #: 23

RE: P1621 fault code - but my car has been off the road... - 3/13/2008 6:31:39 PM    Keith   Posts: 136 Joined: 1/3/2008 Status: offline OK, I'd hate to think anyone would be that unlucky! _____________________________ Keith Hodges Little Rock, Arkansas 85 XJ-6, 95 XJS 2+2 Conv 6.0 V-12 (in reply to jag_genius) Post #: 24

RE: P1621 fault code - but my car has been off the road... - 3/13/2008 7:10:11 PM    ibjags Posts: 298 Joined: 1/31/2008 Status: offline Hey Pam Have you or your tech checked front crank signal when fault occurs? Getting to be a pretty know problem with these cars as they are getting older as car warms up sensors can and do fail  OC or below spec output to ECM Ive had a few including my own 95 xj6 last year took me awhile to figure it out and i am a Jag Tech   lol Also P1621 ECM fault/failure is quit often caused by the ignition coils as they age and crack they begin  to arc to the cam cover spark plug holes and in turn the ECM can be damaged from the spiking or grounding out of the coils The price of new ECM if you can get at our dealer is close to 3 grand Its kind of hit or miss on getting a good known ECM Good luck and continue to keep us posted (in reply to jag_genius) Post #: 25

RE: P1621 fault code - but my car has been off the road... - 3/17/2008 10:58:55 AM    Pammyjz   Posts: 5 Joined: 2/26/2008 Status: offline Solved it!  I traced a previous owner who put me in touch with an old mechanic who used to service the car etc etc.  Net - we have replaced the Crank Shaft Sensor (cost £70) and the car has been running perfectly since.  Apparantly this is so common the guy I spoke to carries them as part of his 'kit'.  I'm not sure about that story but who cares.  I have my lovely car back on the road. Thankyou all for your interest and your time.  I'll come back here first if I have any future problems. Best regards Pam (in reply to ibjags) Post #: 26

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