I can't get my idle BLM's lower than 160 no matter what I do!!

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05-31-2006, 10:28 PM

AaronIROCZ

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I can't get my idle BLM's lower than 160 no matter what I do!!

I have a 87 GTA running the MAF 6E system. Every single year I get it out of storage something always seems to change on it, and I will have to readjust the fuel to get it to run right. This year it idles very lean, the blms go right to 160, I have adjusted the injector constants, maf tables, pulse width verse batt voltage and nothing changes it, I went both ways lean and rich, little changes, big changes, nothing helps. I am using the tunerpro rt with the autoprom. Any ideas???

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06-01-2006, 07:37 AM

RBob

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Car: check

Engine: check

Transmission: check

Low fuel pressure?

RBob.

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06-01-2006, 07:47 AM

RednGold86Z

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Car: 92 Form, 91 Z28, 89 GTA, 86 Z28

Engine: 5.7 TPI, LG4

Transmission: 700R4, 700R4

Axle/Gears: 3.27, 2.73

Does your O2 sensor work at all?

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06-01-2006, 08:14 AM

3.8TransAM

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Car: 91 GTA, 91 Formula, 89 TTA

Engine: all 225+ RWHP

Transmission: all OD

Axle/Gears: Always the good ones

Either of the above or either on the verge of complete failure will do it.

Vacuum leaks.

Dead cylinder?

later
Jeremy

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06-01-2006, 05:49 PM

AaronIROCZ

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Well I just replaced the o2 sensor last year ( but that doesn't mean that its not already bad ) and the fuel pressure is at 42 psi at idle. I will double check the o2 sensor and get back to you.

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