Hello, Im new....my Disco needs your help

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#11

09-05-2009, 07:42 PM

Spike555

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www.mechanicdoctor.com

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#12

09-05-2009, 08:04 PM

instg8r

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i just checked the codes, they dont really say much other then there was a misfire

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#13

09-05-2009, 10:10 PM

SDinDS

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Quote:

Originally Posted by instg8r

ok i scaned it, the codes are

p1316
p1313
p0307
p0000

I left the scaner pluged and i went for a drive. what i did notice is that the speed that the scanner was reading was way off. at times reading 180 kph when im doing 50kph.

i did some poking around on the net and i noticed that some guys with my similar issue had bad VSS.

what do you guys think?

P0307 Misfire on cylinder 7
P1313 Misfire Catalyst Damage Fault Bank A
P1316 Misfire Excessive Emissions Fault

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#14

09-05-2009, 11:08 PM

instg8r

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Is there a way to diagnose the VSS? multi meter?

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#15

09-06-2009, 10:08 AM

SDinDS

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Yes, you can check the VSS thru your cruise control ECU. Find a good ground then back-probe on the ECU wiring harness on terminal 11 (should be a yellow wire) Spin the rear tire tire (or drive it) at 3mph. The voltage should be 2.5volts, but may vary between 0 and 5 volts.

Eric

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#16

09-06-2009, 11:54 AM

instg8r

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great, thanks i will try that tomarow

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#17

09-09-2009, 09:05 AM

instg8r

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where is the VSS located?

discoweb.org is down

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#18

09-09-2009, 04:14 PM

Spike555

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It is on the bottom of the trans, near the output shaft if I remember correctly.
You will need a allen head socket and 12" on extensions to reach it.
No sure what size allen.

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