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#194742 - 05/12/02 10:48 AM 2001 Ignition timing
20-100 Offline
Member

Registered: 01/08/01
Posts: 319
Loc: Quebec, QC, Canada
After searching this forum, I did not find the answer...

I wanted to check the Ignition timing on my 2001, 3.3l engine. In my Haynes manual they say that
Quote:
PCM control of the timing must be disabled before the timing can be checked or adjusted
On the 2000 it involves putting the PCM (aka the computer) in self-diagnosis mode and starting it. The problem for the 2001 is that there is no documented way to put it into self-diag. mode without using a scanner tool.

Any workaround ?

On some GM product, you can enter the diag. mode by grounding a pin in the plug under the dash. On some other vehicle you had to disconnect a harness going to the distributor before adjusting the timing. Any trick like that on the Nissan 2001 3.3L V6 ?

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#194743 - 05/12/02 10:52 AM Re: 2001 Ignition timing
Xrugger Offline
Member

Registered: 26/12/00
Posts: 1207
Loc: Chicago, IL
There is a connector you have to disconnect on the 01 v6's. On top of the intake manifold there are two harness conectors side by side. I believe it is the one closed to the front of the engine.

I'm sure someone on here will chime in soon, If not I double check it when I get home.
_________________________
Joe
We don't need no stinking manuals, thats what we have Emergency Rooms for!

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#194744 - 05/12/02 02:40 PM Re: 2001 Ignition timing
OffroadX Offline
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Registered: 17/08/00
Posts: 13682
Loc: Baltimore, MD
The specs may be a little different as I recall, but the procedure should be the same:
http://www.automotiveforums.com/vbulletin/t2610.html

Brent
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#194745 - 05/12/02 02:59 PM Re: 2001 Ignition timing
ChuckH Offline
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Registered: 27/02/01
Posts: 5206
Loc: Seattle, WA
Note that my post on AF was about timing on my 2000 Xterra. The 2001 has the exact same procedure but the timing spec is different. I think '01's are to be set at 10 degrees BTDC +-2 whereas '00's are 15 degrees. Double check that before you do it!
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"Every morning when I wake up I know it's not going to get any better 'til I go back to sleep again!" Al Bundy

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#194746 - 05/12/02 03:47 PM Re: 2001 Ignition timing
20-100 Offline
Member

Registered: 01/08/01
Posts: 319
Loc: Quebec, QC, Canada
ChuckH, OffroadX,

I'm back from automotive forums (I'm now registered as 20-100 same a here) Chuck's How-to guide about Ignition timing check/adjust is excellent but it completely disagree with what's written in the Haynes manual
Quote:
for the 2000 3.3L engine they dont say nothing about disconnecting the TPS (Throttle Pos. Sensor) but to put the engine in self-diag mode (screw on the side of the computer.
For the 2001, they also request an operation to disable the PCM control of the timing but I need a monitor tool to perform it.

Someone tried ChuckH solution on a 2001 and validated with Nissan approved procedure?

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