96 Suburban reluctor/timing problem - Hot Rod Forum : Hotrodders Bulletin Board
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Old 08-25-2013, 07:07 AM
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96 Suburban reluctor/timing problem

I replaced the crank in my 96 suburban and think I put the relutor on backwards,I can not get the timing right(runs at 27 degrees or 1 tooth off) I try to move it 1 tooth either way and it will not run, Idles fine but when going down the road in 4th it fells like it is stumbling.

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Old 08-25-2013, 07:42 AM
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You would prolly get a better reponse with a different title that mentions your actual problem a little bit.
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Old 08-25-2013, 07:54 AM
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You would prolly get a better reponse with a different title that mentions your actual problem a little bit.
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Old 08-25-2013, 08:28 AM
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You may have put the dizzy gear on backwards. Pretty easy to do if you didnt notice the dot on the gear .
The dot goes on the same side as the rotor pointer when the rotor is on.Just pull it and look. Also if you did not align the rotor pointer correctly with the 8" mark on the plastic dizzy housing when installed and locked down, you'll never be close enough to perform the cam/crank correlation learn so it wont run correctly.
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Old 08-25-2013, 11:24 AM
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96suburban relutor/timing

I have no idea what you are talking about!! What rotor? what dizzy thing? The relutor is behind the harmonic balancer!
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Old 08-25-2013, 01:08 PM
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I see what you are sayin ...my bad.
I was thinking you were talking about the cam sensor in the distributor, but now I see you are talking about the crank sensor.
Very well could be on backwards . That would explain a lot.
Thanks for your Jovial attitude
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Old 08-25-2013, 06:41 PM
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96 suburban relutor/timing

I think I will try turning it over, nothing to lose but a little time,thanks!
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Old 08-25-2013, 07:03 PM
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I Hope that does the trick. Good luck.
Keep us posted.
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Old 09-08-2013, 10:18 AM
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Well did it work?

peace
Hog
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Old 09-08-2013, 05:57 PM
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96 suburban timing

No it did not work, you can not put it on backwards, timing was right on and chain and gears are good, it will run at 27 degrees advanced(one tooth)if I move it either way one tooth it will not run,also I have check engine light for cam shaft corolation to distributor. do not have a clue whats up.
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Old 09-08-2013, 07:32 PM
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I see what you are sayin ...my bad.
I was thinking you were talking about the cam sensor in the distributor, but now I see you are talking about the crank sensor.
Very well could be on backwards . That would explain a lot.
Thanks for your Jovial attitude
p1345 cam/crank sensor correlation error.
Check the dizzy gear. It can be on backwards. Also check the markings on the distributor for alignment TDC #1 cylinder. Rotor should point straight at the little number 8 on the housing of the dizzy.
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Old 09-09-2013, 11:12 AM
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Originally Posted by LATECH View Post
p1345 cam/crank sensor correlation error.
Check the dizzy gear. It can be on backwards. Also check the markings on the distributor for alignment TDC #1 cylinder. Rotor should point straight at the little number 8 on the housing of the dizzy.
Yes, the distributer gear can be put on backwards. Some aftermarket distributers have had the distributer gear on backwards, driving out the pin and turning the gear 180º fixes the issue.
Often if the distributer gear is on backwards, you cannot the clock the distrubuter base enough to get the CMP retard even close to zero and the distributer body wll hit the intake manifold.

Once you get the CMP retard close, you can then use a scac tool that reads out CMP retard and while either holding the engine revs over 1000rpm, or revving the engine over 1000rpm after each adjustment set teh CMP retard to spec. Not revving teh engine or hold revs at 1000rpms will not allow the scan tool readout to refresh, thus you will chase your tail.

CMP retard spec for the V8's is + or - 2º.
on teh V6;s its +7 and -15 or something weird like that. Its harder to cause crossfireing on teh V6 as obvioulsy there is more distance between the contact points on teh distributer.

Timing adbace cannot be adjusted on the Vortec CSFI engines by turning the distributer. It can only be changed by changeing the timing advance in the CPM calibration.
Camshaft Position Sensor Retard is what is changed by clocking the distributer body in relation to the distributer gear on the camshaft.

peace
Hog
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