View Poll Results: Do You Think His Opti is gone??
Voters: 21. You may not vote on this poll
OMG all of my LT1 drivers that has had to replace a opti please come in here!!
Thread Starter
Registered User
Joined: Aug 2003
Posts: 446
From: Atlanta
OMG all of my LT1 drivers that has had to replace a opti please come in here!!
my friend has a 93 z28 he has brand new spark plugs , and wires.. the car is getting gas but when he tries to crank it .. it will not turn over and it back fires ! i have showed him a bunch of threads about what happens when the opti goes bad. .
he still don't believe me that..the Opti is his problem! What do you think?? do you think it's his Opti?!?! the car had over 120,000 miles on it!..
he still don't believe me that..the Opti is his problem! What do you think?? do you think it's his Opti?!?! the car had over 120,000 miles on it!..
Administrator
Joined: Nov 1998
Posts: 71,110
From: Hell was full so they sent me to NJ
93 its easy to flash the codes on the SES light.... why not start there rather than to take a poll on the Internet?
Have you ruled out things like:
-coil
-IC Module
-corrosion in Opti plug and coil wire terminals
-corroded Opti harness connectors
Does "getting gas" mean that he has verified the fuel pump will prime the system when the key is turned on, then shut down, waiting for the engine to start? Does that mean he has verified that the injectors are firing when it tries to start? Has he verified that the injectors are not leaking and flooding the engine, preventing it from starting? Has he tried putting the accel pedal on the floor to put it in "clear flood" mode.
Have you ruled out things like:
-coil
-IC Module
-corrosion in Opti plug and coil wire terminals
-corroded Opti harness connectors
Does "getting gas" mean that he has verified the fuel pump will prime the system when the key is turned on, then shut down, waiting for the engine to start? Does that mean he has verified that the injectors are firing when it tries to start? Has he verified that the injectors are not leaking and flooding the engine, preventing it from starting? Has he tried putting the accel pedal on the floor to put it in "clear flood" mode.
Thread Starter
Registered User
Joined: Aug 2003
Posts: 446
From: Atlanta
93 its easy to flash the codes on the SES light.... why not start there rather than to take a poll on the Internet?
Have you ruled out things like:
-coil
-IC Module
-corrosion in Opti plug and coil wire terminals
-corroded Opti harness connectors
Does "getting gas" mean that he has verified the fuel pump will prime the system when the key is turned on, then shut down, waiting for the engine to start? Does that mean he has verified that the injectors are firing when it tries to start? Has he verified that the injectors are not leaking and flooding the engine, preventing it from starting? Has he tried putting the accel pedal on the floor to put it in "clear flood" mode.
Have you ruled out things like:
-coil
-IC Module
-corrosion in Opti plug and coil wire terminals
-corroded Opti harness connectors
Does "getting gas" mean that he has verified the fuel pump will prime the system when the key is turned on, then shut down, waiting for the engine to start? Does that mean he has verified that the injectors are firing when it tries to start? Has he verified that the injectors are not leaking and flooding the engine, preventing it from starting? Has he tried putting the accel pedal on the floor to put it in "clear flood" mode.
Registered User
Joined: Jan 2006
Posts: 521
From: Bryant, Arkansas
its sounds like a opti... but if you know anything about LT1's, DO NOT CHASE THE PROBLEM, or trial and error the problem(I found out the hard way). I am a service advisor now and trust me, it will cost you less to just get it diag. from someone else and do the work afterward, or even have them do it.... take your pick.... $50-$100 for a diag... or just throw a part up to $300-$400(or maybe cheaper), do the labor, and hope it fixes it.... take your time...
Registered User
Joined: Aug 2002
Posts: 2,325
From: BC
Eh im all for diagnosing the problem but a lot of shops absolutly suck at diagnosing these lt1's 
This does sound like the typical opti. IF the problem was there before and after the new plugs its almost for sure the opti. 250$ for the opti from jason/dal and i think the ICM is around 50$.
This does sound like the typical opti. IF the problem was there before and after the new plugs its almost for sure the opti. 250$ for the opti from jason/dal and i think the ICM is around 50$.
Registered User
Joined: Jul 2003
Posts: 1,035
From: Houston, TX
If the problem started after isntalling the new plugs and wires, the problem is that one of the plug wires is installed on the wrong number on the opti. Check all the wires to make sure that the #2 wire goes to the #2 on the opti... I crossed a whole side backwards once and it did that. HTH
Registered User
Joined: Aug 2003
Posts: 2,925
From: Detroit
If the problem started after isntalling the new plugs and wires, the problem is that one of the plug wires is installed on the wrong number on the opti. Check all the wires to make sure that the #2 wire goes to the #2 on the opti... I crossed a whole side backwards once and it did that. HTH
