Fuel Mixture Concern

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Fuel Mixture Concern

Postby Rocketman_47 » Sun Apr 16, 2017 8:36 pm

Hey guys. I just purchased this Sonoma that has a 383 LT1 install. The donor car for this engine was a 1995 Camaro. It runs awesome and the power feels unlimited. However, It is running very rich. Can anyone explain how to resolve that?

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1995 Sonoma, LT1 383, T56, Eaton Posi

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Re: Fuel Mixture Concern

Postby AWD V8 » Sun Apr 16, 2017 9:51 pm

HOW do you know it's running rich?

You need to see the O2 readings first to confirm it, and also to know when you have fixed it.

You will need to see the sensor readings that the PCM sees. You need a scanner to eliminate guessing.
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Re: Fuel Mixture Concern

Postby Rocketman_47 » Sun Apr 16, 2017 10:50 pm

AWD V8 wrote:HOW do you know it's running rich?


Because the rich exhaust fumes are borderline choking me.
1995 Sonoma, LT1 383, T56, Eaton Posi

My Website: http://23t.weebly.com/
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Im working on unhooking my battery cables.
 
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Re: Fuel Mixture Concern

Postby AWD V8 » Sun Apr 16, 2017 11:21 pm

You are going to need to see what the PCM is seeing. You can't fix what you can't see. It could be a number of things. You need to actually have something to confirm that it is running rich or you can't fix it.

You need a scanner.
I'm not old, I'm ripe

99 AWD Jimmy - RIP
'95 AWD Jimmy - RIP
'89 AWD Jimmy - RIP
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I eat gummy bears when I post.
 
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Re: Fuel Mixture Concern

Postby Rocketman_47 » Sun Apr 16, 2017 11:37 pm

AWD V8 wrote:You are going to need to see what the PCM is seeing. You can't fix what you can't see. It could be a number of things. You need to actually have something to confirm that it is running rich or you can't fix it.

You need a scanner.


Got it, I'll try that and see what shows up. Thanks
1995 Sonoma, LT1 383, T56, Eaton Posi

My Website: http://23t.weebly.com/
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Rocketman_47
Im working on unhooking my battery cables.
 
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Location: Longview, Texas

Re: Fuel Mixture Concern

Postby AWD V8 » Sun Apr 16, 2017 11:47 pm

You'll need to know fuel trims, oxygen sensor readings for both banks. I'd also do a fuel pressure test and also know if the system holds pressure when shut off.
I'm not old, I'm ripe

99 AWD Jimmy - RIP
'95 AWD Jimmy - RIP
'89 AWD Jimmy - RIP
User avatar
AWD V8
I eat gummy bears when I post.
 
Posts: 1821
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Re: Fuel Mixture Concern

Postby Rocketman_47 » Sun Apr 16, 2017 11:53 pm

AWD V8 wrote:You'll need to know fuel trims, oxygen sensor readings for both banks. I'd also do a fuel pressure test and also know if the system holds pressure when shut off.


Noted; Thanks for the info. When I get all this I will report it back on here.
1995 Sonoma, LT1 383, T56, Eaton Posi

My Website: http://23t.weebly.com/
User avatar
Rocketman_47
Im working on unhooking my battery cables.
 
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Joined: Fri Apr 14, 2017 7:03 am
Location: Longview, Texas


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