engine light on
05-20-2009, 08:36 PM
#1
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Car: 85 camaro z28
Engine: 305 TPI
Transmission: T56 6 speed
Axle/Gears: 3.27 borg warner 9 bolt
engine light on
does anyone know how to deal with a engine light that is on. i have an 85 z28 shops say its to old to run machines on it. is there anyway to find out why my engine light is on what is wrong?
05-20-2009, 10:03 PM
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Car: 90 formula
Engine: 305 carb
Transmission: 700r4
Axle/Gears: auburn 3.73 posi
Re: engine light on
all you should need to do is short 2 of the pins on the obd connector and count the flashes on the service engine light. This will give you the codes.The procedure is in my hanes manual with a listing of the codes.
05-20-2009, 10:09 PM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: engine light on
You just need a paperclip to read the codes.
This page will tell you how to read the fault codes and what they mean:
http://www.austinthirdgen.org/index.php?pid=27
Hope this helps.
Lou
This page will tell you how to read the fault codes and what they mean:
http://www.austinthirdgen.org/index.php?pid=27
Hope this helps.
Lou
05-21-2009, 02:58 PM
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Car: 85 camaro z28
Engine: 305 TPI
Transmission: T56 6 speed
Axle/Gears: 3.27 borg warner 9 bolt
Re: engine light on
ok thanks for the info i can always count on the members of this website thanks a lot
05-28-2009, 05:35 PM
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Car: 85 camaro z28
Engine: 305 TPI
Transmission: T56 6 speed
Axle/Gears: 3.27 borg warner 9 bolt
Re: engine light on
the codes that came up for my car were 24 and 42. i read the meanings of them in the post above but how can i fix them so the light will shut off. i swapped out my automatic tranny to a 6 speed manual and i don't know if maybe this has something to do with one of the codes, since the ECM might think there should be a auto trans and now some wires aren't connected?
05-28-2009, 10:26 PM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: engine light on
On TPI engines, code 24 indicates a low TPS reading and code 42 is for the ESC circuit.
You can check the TPS with a voltmeter. The reading with the key on should be as follows:
- throttle closed - 0.5V
- throttle fully open - >4.0V
When opening/closing the throttle, the voltage reading should be smooth, not jumpy.
Lou
You can check the TPS with a voltmeter. The reading with the key on should be as follows:
- throttle closed - 0.5V
- throttle fully open - >4.0V
When opening/closing the throttle, the voltage reading should be smooth, not jumpy.
Lou
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05-29-2009, 10:26 AM
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Car: 85 camaro z28
Engine: 305 TPI
Transmission: T56 6 speed
Axle/Gears: 3.27 borg warner 9 bolt
Re: engine light on
how do you keep the tps from being jumpy?
05-29-2009, 10:39 AM
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Car: 85 camaro z28
Engine: 305 TPI
Transmission: T56 6 speed
Axle/Gears: 3.27 borg warner 9 bolt
Re: engine light on
also for the EST do you have to replace a piece in the distributor?
none of these codes should be from the transmission swap correct?
none of these codes should be from the transmission swap correct?
05-29-2009, 11:21 AM
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Car: '91 Z28 convertible
Engine: TPI
Transmission: T5
Axle/Gears: 3.27 posi disc
Re: engine light on
If the TPS is "jumpy" and not smooth in operation, it would need to be replaced. Because if it sends incorrect readings to the ECM, that would cause trouble.
It's hard to tell whether the 42 code is for ESC or EST. I was under the impression that it's for ESC but I might be wrong. Let's wait for one of the mods to chime in, they should have a better idea.
No codes should be caused by a simple transmission swap. Unless you disturbed the harness when it was already barely making connection in some places. I'd check all the connectors and make sure that they are good and tight and that no wires are frayed.
Lou
It's hard to tell whether the 42 code is for ESC or EST. I was under the impression that it's for ESC but I might be wrong. Let's wait for one of the mods to chime in, they should have a better idea.
No codes should be caused by a simple transmission swap. Unless you disturbed the harness when it was already barely making connection in some places. I'd check all the connectors and make sure that they are good and tight and that no wires are frayed.
Lou
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