Hey guys,
I've just set my timing for the 3rd time tonight. At first, I did everything up to the point of dissconnecting the TPS, I did that, then the RPMs stayed at 1750 rpms...so I turned the car off and dissconnected the AAC valve(because I turned it all the way down but it wouldnt go past 1200 rpm), then I started it back up, it died, so I started it again, held the RPMS at 800 for a few seconds, then it held stedy. So I set the timing to 18-19 degree's(It was set at 22 degrees! Might explain why my car was running rich). Drove it home, noticed that it felt like I'd lost some power. so I came back to the shop, went through the whole proceedure again, this time the rpms went down to 1200 after I disconnected the TPS, so I put it in 1st gear and held on the brakes and put it under slight load and the rpms went to 800 and stayed there. sO I set the timing to 19, tightend the bolts, checked it one last time and it was at 15 again. So I loosened it up, set it at 19 again and it seems to work okay. I'm going to drive it home and see if it feels any better, but I prolly wont be able to tell tonight 'cause its raining outside. ANYWAY

My real question is, when I had it in timing mode after I dissconnected the TPS, the light would dance around a lot , so I just went off the highest reading it would give. Could this be the distributor thats giving me problems? My car is missing out someitmes too, but I've replaced the cap, rotor, plugs and wires. I'm going to test my fuel pressure out of the regualtor this week when I find the correct gauge. TIA for any help guys!
:confused:

Originally posted by SENTRASER
My real question is, when I had it in timing mode after I dissconnected the TPS, the light would dance around a lot , so I just went off the highest reading it would give. Could this be the distributor thats giving me problems? My car is missing out someitmes too, but I've replaced the cap, rotor, plugs and wires. I'm going to test my fuel pressure out of the regualtor this week when I find the correct gauge. TIA for any help guys!
:confused:

The timing dances around because you still are not in "set" mode.

The ECU will not go into "set" mode if the idle is over 1200 rpm. You'll have to screw around some more to get it there. In "set" mode the timing is rock steady.

Originally posted by Geo91SER


The timing dances around because you still are not in "set" mode.

The ECU will not go into "set" mode if the idle is over 1200 rpm. You'll have to screw around some more to get it there. In "set" mode the timing is rock steady.

Wel, I got the idle under 1000rpm, acctualy down to about 800, but I had to put some load on the engien, as in putting it in 1st gear and holding the brake and at the same time letting the clutch out and pushing on the gas slightly as I do when I double clutch....any ideas?

~Ryan

Anyone? Buler?:(

Try using these intructions.

http://www.b15sentra.net/modules.php?op=modload&name=NS-HowTo&file=index&func=show_ind_cat&id_cat=3#22

I couldn't get the technique in the FSM to work consistently on my car either, but this way worked first shot. Good luck.

iirc, it says specifically in the fsm that when you run the car at whatever rpm you need to run it at to set for timing mode, that the engine should be under no load. have you tried setting your base idle first?

Originally posted by jomama
iirc, it says specifically in the fsm that when you run the car at whatever rpm you need to run it at to set for timing mode, that the engine should be under no load. have you tried setting your base idle first?

Yes, idle is set to 850. I dunno what the problem is...I wonder if I'm not supposed to turn off the car when I disconnect the TPS?
~Ryan

Originally posted by Inkorekt
Try using these intructions.

http://www.b15sentra.net/modules.php?op=modload&name=NS-HowTo&file=index&func=show_ind_cat&id_cat=3#22

I couldn't get the technique in the FSM to work consistently on my car either, but this way worked first shot. Good luck.

Thanks!!! This worked great! I would suggest that the writeup on SE-R.net is changed to this proceedure, I think the part that messses me up is the reving from 2k-3k, I think you need to rev a little past 3k. And you dont need to turn off your car when disconnecting the TPS. This helped out a lot! My timing was set RIGHT at where it needed to be too. I guess me gussing the highest number it was reading while it wasn't in timing mode was a BULLS eye.. :) Thanks everyone!

~Ryan