Tach not working properly. Reluctor ring?
03-04-2007, 12:28 PM
#41
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Do you have a spare tach that you could hook up to see if that will fix the tach problem?
Just curious what did you degree the cam at? What was it ground at?
Just curious what did you degree the cam at? What was it ground at?
03-05-2007, 08:04 AM
#42
The correct voltage is there. The weird part is after messing with it friday, and swapping the retainer plate and timing set the tach will now go to 3000rpm before it cuts off. That little bit of messing with it gained 500rpm. Im going to order the LS2 timing chain and stock gears today from GM and slap those on there friday and hopefully thats the cure. It did seem to help just by messing with it. So maybe by swapping the double roller out it will fix it.
I dont have another tach to try right now, and the cam is degree'd. Just the dot to dot method was used. The cam is a 228/228 .580/.580 113 I believe it was.
I dont have another tach to try right now, and the cam is degree'd. Just the dot to dot method was used. The cam is a 228/228 .580/.580 113 I believe it was.
03-05-2007, 12:37 PM
#43
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Originally Posted by Z'mnypit
The correct voltage is there. The weird part is after messing with it friday, and swapping the retainer plate and timing set the tach will now go to 3000rpm before it cuts off. That little bit of messing with it gained 500rpm. Im going to order the LS2 timing chain and stock gears today from GM and slap those on there friday and hopefully thats the cure. It did seem to help just by messing with it. So maybe by swapping the double roller out it will fix it.
I dont have another tach to try right now, and the cam is degree'd. Just the dot to dot method was used. The cam is a 228/228 .580/.580 113 I believe it was.
I dont have another tach to try right now, and the cam is degree'd. Just the dot to dot method was used. The cam is a 228/228 .580/.580 113 I believe it was.
which double roller do you have?
03-05-2007, 03:00 PM
#45
Originally Posted by Z'mnypit
Roller Master..
i dont think your problem is with the roller chain or the cam or crank sensor, its probably the wiring from the PCM to the instrument cluster for the tach output, or the tach itself, as for the engine being sluggish, did you verify the engine timing, sometimes with the double roller chains the crank gear is two pieces and there are 3 different timing marks on it, you have to choose the round one and line it up with the camshaft gear. the other two are rectangle and triangle.
hope this helps
03-05-2007, 10:15 PM
#46
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Originally Posted by Z'mnypit
Roller Master..
oh well i had an SLP, so i thought if you had the same one then it definately is your chain... still mine rubbed on the inside because it wasnt properly shimmed. i'm willing to bet if you switched out the chain to an LS2, the tach would work. like i said i tried lots of different things, including replacing sensors and checking the wiring, but the chain ended up the problem. good luck buddy!!
03-06-2007, 07:27 AM
#47
Originally Posted by RooRnZ28
oh well i had an SLP, so i thought if you had the same one then it definately is your chain... still mine rubbed on the inside because it wasnt properly shimmed. i'm willing to bet if you switched out the chain to an LS2, the tach would work. like i said i tried lots of different things, including replacing sensors and checking the wiring, but the chain ended up the problem. good luck buddy!!
03-06-2007, 01:33 PM
#49
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This is probably an unwelcome suggestion but guesses are unlikely to solve this problem. You need to determine whether the problem is mechanical or electrical – whether the problem is inside or outside the engine. The most straightforward way to isolate this problem, unfortunately, would be to install the motor in another car. The alternative is for an experienced technician to look at various signals with an oscilloscope. Simply measuring voltages does not tell the full story.
Last edited by Gary Z; 03-06-2007 at 01:44 PM.
03-06-2007, 02:01 PM
#50
Originally Posted by Gary Z
This is probably an unwelcome suggestion but guesses are unlikely to solve this problem. You need to determine whether the problem is mechanical or electrical – whether the problem is inside or outside the engine. The most straightforward way to isolate this problem, unfortunately, would be to install the motor in another car. The alternative is for an experienced technician to look at various signals with an oscilloscope. Simply measuring voltages does not tell the full story.
03-06-2007, 02:43 PM
#51
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Originally Posted by Z'mnypit
No one is guessing, Im trying everything I can think of and so far nothing has worked.
03-06-2007, 02:54 PM
#52
Originally Posted by Gary Z
Trying everything you can think of IS guessing. It may be informed guessing, but it is not the same as looking for evidence and following the trail. You started this thread saying everything was perfect except the tach. Only later did you inform us that the engine runs poorly. I’m sorry you have a difficult problem. Good luck.
03-10-2007, 01:51 PM
#53
Problem Solved!!!!!!! Replaced both sprockets back to stock, and put an LS2 timing chain on, removed the oil pump shims, reinstalled everything and bingo, tach works flawless, Fumes are gone, starts right up, and pulls 15x as hard as it did. I never would have thought 2months of headach wouldve been a timing chain and sprockets. Still not sure why the double roller was screwing it up but oh well. Thanks for all the help!
03-10-2007, 05:16 PM
#54
Originally Posted by RooRnZ28
if you have a double roller timing chain, then that is your problem..
i had an SLP double roller and it was installed wrong. my tach didnt work at all and it was a bitch to fire up, wouldnt want to crank over... then i swapped out to an LS2 chain, and all the problems disappeard!
i had an SLP double roller and it was installed wrong. my tach didnt work at all and it was a bitch to fire up, wouldnt want to crank over... then i swapped out to an LS2 chain, and all the problems disappeard!
Al
03-10-2007, 05:41 PM
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Awesome!!!! yea, sometimes those double rollers are a hassle!! glad you got it figured out dude....
the ls2 chain is much stronger than the ls1. if you hold them side by side, you can tell the difference.
the ls2 chain is much stronger than the ls1. if you hold them side by side, you can tell the difference.
03-10-2007, 06:38 PM
#56
Originally Posted by Z'mnypit
Problem Solved!!!!!!! Replaced both sprockets back to stock, and put an LS2 timing chain on, removed the oil pump shims, reinstalled everything and bingo, tach works flawless, Fumes are gone, starts right up, and pulls 15x as hard as it did. I never would have thought 2months of headach wouldve been a timing chain and sprockets. Still not sure why the double roller was screwing it up but oh well. Thanks for all the help!
Congrats
Now I know what I have to do to fix mine.
Thanks for keeping us up to date.
Al
