OK what year is my engine?
#1
OK what year is my engine?
I have a 94z28 with a no start condition, so I have been going through the troubleshooting charts. I removed the harness from the opti and the connector was cracked, so I checked ebay to buy a new one. My opti uses the harness with the long flat connector which is shown to be 1995-1997, the earlier ones look different than what I have. So either someone converted to the later opti or the engine has been changed. Any way I can check to see what exactly has been changed? FWIW it looks like my optical sensor is dead so I will need another opti, good thing I didnt buy one ahead of time for the 94.
#3
I got this picture from ebay, the long flat connector is what my opti uses which is described as a 95-97 style. When I looked up the 93-94 style they showed a more common looking connector similar to the ones seen on the engine on different snesors.
#5
http://shbox.com/1/block_vin.jpg check to see if your cars vin matches blocks vin
#6
Thats what I figured. I am going to get the opti off to confirm, but is there a casting date somewhere easy to see so I can check the block date? Any differences between 94-95 engines other than the opti and related parts up front?
Thanks for the pic, I will check the vin.
Thanks for the pic, I will check the vin.
#7
Thats what I figured. I am going to get the opti off to confirm, but is there a casting date somewhere easy to see so I can check the block date? Any differences between 94-95 engines other than the opti and related parts up front?
Thanks for the pic, I will check the vin.
Thanks for the pic, I will check the vin.
#9
Just pulled the opti, definately a later 95 up vented unit with the corresponding timing cover and cam. The opti is supposed to be only 6 months old, but following the diagnostics I have found here show a bad optical sensor. The water pump shows rust stains all around the bearing, looks like it may have leaked and killed the opti. I removed the cap and did find some moisture, other than that it looked new. What size torx bolts hold on the rotor? I didnt have one small enough to remove it, I want to pull the cover and look at the optical sensor. Any way to test it, maybe with a diode test setting on a DVM?
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