Opti.
'94 Vette Through Some Codes (HELP!!!)
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
'94 Vette Threw Some Codes (HELP!!!)
Hey guys,
My vette recently died while running. Before dying, the rpm's took a dive. I threw the following codes:
H36- Distributor Ignition System High Pulse.
H41- Ignition Control Circuit Open.
H62- Engine Oil Temperature Sensor Circuit Voltage Low.
The car starts and idles fine for about 3mins, and then I start running into problems. What do I need to buy to fix this? And what could be the culprit? My plug wires are fine.
UPDATE: I finished the opti/water pump install. The vette is running flawlessly now. Thanks Chandler Motorsports for a quality piece at an affordable price and thank you O' Rilley's for a quality water pump!
My vette recently died while running. Before dying, the rpm's took a dive. I threw the following codes:
H36- Distributor Ignition System High Pulse.
H41- Ignition Control Circuit Open.
H62- Engine Oil Temperature Sensor Circuit Voltage Low.
The car starts and idles fine for about 3mins, and then I start running into problems. What do I need to buy to fix this? And what could be the culprit? My plug wires are fine.
UPDATE: I finished the opti/water pump install. The vette is running flawlessly now. Thanks Chandler Motorsports for a quality piece at an affordable price and thank you O' Rilley's for a quality water pump!
Last edited by 94lt1vette94; Apr 17, 2011 at 12:59 AM.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Definitely has the symptoms of a possible bad opti. A H36 ( loss of high pulse) should not kill the engine. If a code 16 came up and a loss of the low pulse occurred, I could see the engine dying due to it is required pulse.
I would at least clear the codes and see if any codes return. The opti could be bad with having no codes at all. But usually (not always) cause poor running with bucking under acceleration and poor idling.
But aside from checking connectors and pins as indicated already, there is a possibility the ICM could be a bad because the engine is dying.
I would at least clear the codes and see if any codes return. The opti could be bad with having no codes at all. But usually (not always) cause poor running with bucking under acceleration and poor idling.
But aside from checking connectors and pins as indicated already, there is a possibility the ICM could be a bad because the engine is dying.
Burning Brakes
Joined: Feb 2009
Posts: 785
Likes: 3
From: Richmond Virginia
Code 36 is the opti or opti circuit to the PCM-- as stated above check the harness connection at the opti and above the right valve cover for corrosion etc.---however I suspect a opti replacement is in your future.
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Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
And if in fact it's the harness that's bad, where can I buy a replacement from?
Race Director
Joined: Jan 2002
Posts: 12,263
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From: O'Fallon Missouri
Instructor
Joined: Feb 2011
Posts: 244
Likes: 6
From: harrison twp mi
i myself thru my camaro and vette have had problems with ones from advance/autozone and a couple of msd's,before i bought an ac delco unit,no problems since. have also heard good things from chandlermotorsports ,vendor on here,and there very cheap.
mike
mike
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
Just ordered an opti from chandler motorsports. Hopefully it's as great as the reviews make it out to be. I can't see how I could wrong with it regardless, seeing that it was $114 shipped lol
Former Vendor
Joined: Oct 2006
Posts: 134
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From: Waukesha Wisconsin
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
