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Missfire intermident rev

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11 May 2018 22:33 - 12 May 2018 11:51 #192609 by Filfrasen
I have a -2005 VVT Jimny.
I works great on idle but missfiers Little at 2200 rpm and over (engin run pretty ruff on highway speed)

Wher to start ?

Sprak plugs ? (pretty new Bosch)
Chrank shaft sensor ?
Cam sensor ?
Oxygen sensor bank 2 ? (seams funny volts when Reading with ODB2 reader and Torque mobil app compers with bank 1 sensor volt, bank 1 volts movs around fast all the time, bank 2 volts move litte slower up and down )
Coils ?
Cat ?

No Engine lights flasching.
No fault codes.

Regards
Nick / Sweden
Last edit: 12 May 2018 11:51 by Filfrasen.

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12 May 2018 09:40 #192614 by mickt
Replied by mickt on topic Missfire intermident rev
Some people seem to think that these engines don't like the Bosch plugs. NGK are the ones to use .apparently. Coils can start to break down too. Unless it is a hard fault you wont get a fault light. Intermittent faults are by nature difficult to pin down.
The following user(s) said Thank You: Filfrasen

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12 May 2018 11:47 - 12 May 2018 11:54 #192619 by Filfrasen
Replied by Filfrasen on topic Missfire intermident rev
To day i get error codes in the ODB2 Reading:

P0300 Powertrain random/multiple cylinder misfire detected

P0301 Powertrain cylinder 1 misfire detected
P0302 -#- Cylinder 2
P0302 -#- Cylinder 3
P0304 -#- Cylinder 4

No Engine light flasching on the dachboard.

On the test run today it missfirers first, then it work great for 5 minutes, then missfire cam back.
Last edit: 12 May 2018 11:54 by Filfrasen.

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12 May 2018 15:43 #192623 by Lambert
Replied by Lambert on topic Missfire intermident rev
As has been said plugs and coils/leads. Plugs first as they are cheaper.

It's not a Jimny. It's my Jimny

Mooo said Ermintrude (black)
Boing said Zebedee (blue automatic)
Hello said Florence (silver gv 2.4)

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03 Jun 2018 08:34 - 03 Jun 2018 08:36 #193166 by Filfrasen
Replied by Filfrasen on topic Missfire intermident rev
It was not Sprakplugs, Coil or coilswires….no diffrent.
The Cranksensor and Camsensor the supplier Autodoc say fit my car dossent fit at all, i guess i have to by them from Suzuki...….$$$$$. :woohoo: :blink: :angry:
Last edit: 03 Jun 2018 08:36 by Filfrasen.

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03 Jun 2018 16:50 #193172 by Filfrasen
Replied by Filfrasen on topic Missfire intermident rev
I connect the OBD reader and took a driv today.


The timing advance on idle was 10-12.5 degrease (manual says 5 (+-3))

When driving at 2500-3000rpm it was 40-50 degrease….Little to high ?


It seems like the chrank sensor is the problem ?

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17 Jun 2018 18:48 #193557 by Filfrasen
Replied by Filfrasen on topic Missfire intermident rev
I think i have fix the problem.

I change the camsensor last and the missfire dissapear.

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