99 Z28 Rebuild
99 Z28 Rebuild Friday I was driving my Z28 and it just shut off and the Tach went to zero. I pulled it over and it would crank but not start. I took it home and I had a code P0343 Cam Position Sensor High Voltage.
I replaced the Cam Position Sensor and it still will not fire. The Fuel Pump is working. I guess the next thing to do is check the wiring. Any other ideas?
Thanks,
Brian
I replaced the Cam Position Sensor and it still will not fire. The Fuel Pump is working. I guess the next thing to do is check the wiring. Any other ideas?
Thanks,
Brian
Last edited by 9911UZ28; Mar 30, 2011 at 04:53 PM.
I had this problem a while back but it ended being the cam sprockets bolts that got lose put loctite on the bolts and problem went away but check your wiring first then take it from there good luck
I will check the wiring, but I already fixed the loose cam bolts a few months ago.
I replaced the Water Pump at the same time since I had it off.
I wonder if the timing chain could have went.
I replaced the Water Pump at the same time since I had it off.
I wonder if the timing chain could have went.
Did you check your basics? fuel? Spark? Compression?
To check for timing chain problems you can.....
Get a scope and look for a wave form to assure the timing chain is not broken.
Compression check to see if the chain is broken.
Pull the cover.
To check for timing chain problems you can.....
Get a scope and look for a wave form to assure the timing chain is not broken.
Compression check to see if the chain is broken.
Pull the cover.
My brother had a similar problem with his '01 Z28. He got home and it cut off on him, and the next day when he tried starting it, all it did was crank over and not come on. It ended up being a ground cable behind the center(stereo) console. Check and make sure all of your ground are properly connected.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote correct me if im wrong here but if the timing chain broke would he not have a whole lot more problems that were much more obvious. I.E. noises from the motor, bent valves, other horrific noises from the engine bay?
^^^^^^^^Not really because the valves are not going anywhere if the TC is broken. When the TC broke on my old 79 T/A the motor spun over fast when you tried to start it because the starter has only pistons to move not the valvetrain.... I guess I was lucky as I suffered no collateral damage when mine broke.
Last edited by SOMbitch; Sep 29, 2010 at 02:26 PM.
and have you worked on the starter/flywheel lately? its easy to pinch the crank sensor wires in the starter/heat sheild. and it would behave as you describe. Tach moving? (as stated above)
a budy of mine just had a problem with a no run problem and it was one of the relays under the hood in the fuse box it took a while to find out what was going on the condition was crank/no start ..Im new with these ls cars and I dont know if this is a common problem
I switched the relays around and it did not change a thing. I am in the process of tearing the motor down to get to the timing chain. I think that might be the problem. While it is apart I am going to replace the timing chain with the new LS2 one I already have, replace the camshaft, pull the heads and have them worked over, and add a LS6 Intake.
btw the tach needle moves just not much.
btw the tach needle moves just not much.