Plastic LS1 tank question
05-25-2011, 10:38 AM
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Plastic LS1 tank question
I have a plastic LS1 tank that I am putting in my 1989 Camaro along with a LS1 and T56. The stock fuel level sending unit reads 33-240 ohm (empty-full)...
Here is my question to you....
My new fuel gauge dose not read 33-240, it's 240-33 ohm. I was going to bend the float arm so that it faces the other way... Thus correcting the problem.
The fuel gauge would be accurate, but I thought the fuel level data was sent to the PCM for EVAP calculations... wont this throw off the EVAP system? This needs to be a smog legal swap.
Here is my question to you....
My new fuel gauge dose not read 33-240, it's 240-33 ohm. I was going to bend the float arm so that it faces the other way... Thus correcting the problem.
The fuel gauge would be accurate, but I thought the fuel level data was sent to the PCM for EVAP calculations... wont this throw off the EVAP system? This needs to be a smog legal swap.
05-25-2011, 11:02 AM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Yes, it will throw off the PCM for its emissions functions.
The options are swapping in a 4th gen gauge cluster, or putting in a programmable fuel gauge (I did the latter in my LS1/T56 swap in which I used a 4th gen LS1 plastic tank). Since you said "new fuel gauge", sounds like you should have gotten a programmable.
The options are swapping in a 4th gen gauge cluster, or putting in a programmable fuel gauge (I did the latter in my LS1/T56 swap in which I used a 4th gen LS1 plastic tank). Since you said "new fuel gauge", sounds like you should have gotten a programmable.
05-25-2011, 09:43 PM
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Plastic LS1 tank question
Mount the gauge upside down. LOL!
05-26-2011, 07:36 PM
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Re: Plastic LS1 tank question
Guess I will have to pay another $100 to convert to 0-90 ohms.
1 last question. I have a 1998 style LS1, but I was tld I will still need the platic tank. In 1998 a metal tank was still used. Is there any diff in the EVAP between 98 and 99-02??
1 last question. I have a 1998 style LS1, but I was tld I will still need the platic tank. In 1998 a metal tank was still used. Is there any diff in the EVAP between 98 and 99-02??
05-26-2011, 11:53 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If you've got a '98 LS1 engine and emissions system, and a '98 LS1 tank, whoever told you that you need a plastic tank is simply dead wrong.
Leave the sender alone and use a programmable fuel level gauge, like you said you are going to do in the thread about plastic tanks.
Leave the sender alone and use a programmable fuel level gauge, like you said you are going to do in the thread about plastic tanks.
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