Engine Running Issue
#53
Member
iTrader: (1)
Join Date: Oct 2020
Location: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Posts: 435
Received 189 Likes
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144 Posts
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Engine Running Issue
Heated O2 Sensor Retrofit Kit Early 1 Wire GM
"This kit allows a new style heated oxygen sensor to be installed on a vehicle that originally came with a non-heated, 1 wire sensor. The heated oxygen sensors are more active and more responsive than the non-heated sensors and are also more resistant to contaminates such as lead.
Typical applications are late 1980's through early 1990's GM vehicles when aftermarket headers are used or a great choice when replacing the factory non-heated O2 sensors. Simple two-wire installation. Kit comes complete with 4-wire heated oxygen sensor and adapter harness."
Summit Racing - Casper's Electronics Heated Oxygen Sensor Retrofit Kits 103025
Installation Instructions - Casper's Electronics Heated Oxygen Sensor Retrofit Kits 103025
Summit Racing - Lisle Oxygen Sensor Thread Chasers 12230
O2 Sensor Extension Harness SQR
"When installing aftermarket headers and cat-back systems in your vehicle, the oxygen sensor is frequently relocated, usually far enough away from the original wiring location that the connector cant be re-installed. You cannot cut and splice oxygen sensor wiring since this can permanently damage the sensor and considerably reduce accuracy of the signal. These extensions are "Plug-And-Play" and utilize OEM connectors, terminals and seals with OEM wiring to maintain precisely accurate signals and safely extend the wiring connections. Note: Please check your connector shape and color to see if it matches your application."
Summit Racing - 12" Casper's Electronics Oxygen Sensor Extension Harnesses 109006
Summit Racing - 24" Casper's Electronics Oxygen Sensor Extension Harnesses 109007
Summit Racing - 36" Casper's Electronics Oxygen Sensor Extension Harnesses 109008
Summit Racing - 48" Casper's Electronics Oxygen Sensor Extension Harnesses 109009
"This kit allows a new style heated oxygen sensor to be installed on a vehicle that originally came with a non-heated, 1 wire sensor. The heated oxygen sensors are more active and more responsive than the non-heated sensors and are also more resistant to contaminates such as lead.
Typical applications are late 1980's through early 1990's GM vehicles when aftermarket headers are used or a great choice when replacing the factory non-heated O2 sensors. Simple two-wire installation. Kit comes complete with 4-wire heated oxygen sensor and adapter harness."
Summit Racing - Casper's Electronics Heated Oxygen Sensor Retrofit Kits 103025
Installation Instructions - Casper's Electronics Heated Oxygen Sensor Retrofit Kits 103025
Summit Racing - Lisle Oxygen Sensor Thread Chasers 12230
O2 Sensor Extension Harness SQR
"When installing aftermarket headers and cat-back systems in your vehicle, the oxygen sensor is frequently relocated, usually far enough away from the original wiring location that the connector cant be re-installed. You cannot cut and splice oxygen sensor wiring since this can permanently damage the sensor and considerably reduce accuracy of the signal. These extensions are "Plug-And-Play" and utilize OEM connectors, terminals and seals with OEM wiring to maintain precisely accurate signals and safely extend the wiring connections. Note: Please check your connector shape and color to see if it matches your application."
Summit Racing - 12" Casper's Electronics Oxygen Sensor Extension Harnesses 109006
Summit Racing - 24" Casper's Electronics Oxygen Sensor Extension Harnesses 109007
Summit Racing - 36" Casper's Electronics Oxygen Sensor Extension Harnesses 109008
Summit Racing - 48" Casper's Electronics Oxygen Sensor Extension Harnesses 109009
Last edited by Airwolfe; 07-20-2024 at 05:23 PM.
#55
Re: Engine Running Issue
Ok, yeah, #1 is behaving like 3 and 5. So my theory is still holding about the #7 injector.
But again, this is an educated guess. Not sure if anyone else has any other thoughts.
So I guess it's up to you at this point if you want to go after the #7 injector. Clearly you'd be taking a chance.
And if the injectors are really old, I don't know that I'd tear down the TPI manifold to just replace one injector. I'd probably get a complete and matched set from say, Southbay injectors.
But again, this is an educated guess. Not sure if anyone else has any other thoughts.
So I guess it's up to you at this point if you want to go after the #7 injector. Clearly you'd be taking a chance.
And if the injectors are really old, I don't know that I'd tear down the TPI manifold to just replace one injector. I'd probably get a complete and matched set from say, Southbay injectors.
#57
Re: Engine Running Issue
The injectors are from Southbay about 5 years ago with maybe a thousand miles.
Which would you recommend
https://www.southbayfuelinjectors.co...d-5-7-tpi.html
https://www.southbayfuelinjectors.co...7-350-tpi.html
Which would you recommend
https://www.southbayfuelinjectors.co...d-5-7-tpi.html
https://www.southbayfuelinjectors.co...7-350-tpi.html
#60
Re: Engine Running Issue
I'd probably give them a call and let them know about this troubleshooting effort to get their opinion. Also they're opinion on what injectors you should get.
Maybe just replace the one if they're only 5 years old? Again probably ask then
Hopefully this solves your issues.
Maybe just replace the one if they're only 5 years old? Again probably ask then
Hopefully this solves your issues.
#61
Member
iTrader: (1)
Join Date: Oct 2020
Location: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Posts: 435
Received 189 Likes
on
144 Posts
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Engine Running Issue
Well I would assume something that is powered up 12V+ only in Key On Engine On. Probably a fuel pump relay.
I've only used Casper's plug and play 4 wire heated O2 retrofit kit on a Grand National/TTA and it tees into the EGR control solenoid circuit.
I've only used Casper's plug and play 4 wire heated O2 retrofit kit on a Grand National/TTA and it tees into the EGR control solenoid circuit.
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