Re: OT, Chevy Lumina up and died!

Posted by 1991 Lumina 3.1 on April 28, 2006 at 08:29:18 from (66.228.96.243):

In Reply to: Re: OT, Chevy Lumina up and died! posted by KEB on April 28, 2006 at 07:41:56:

I tested all the computer, sensors, etc etc from a known donor car that ran before the tranny went out. I put a noid light on the injector harness as well as put a test light in the wires to see if they pulsate, yes, they work fine. I removed the fuel rail with the injectors intact with the fuel lines still hooked up, grounded the rail, and turned the engine over, the injectors work, you can hear them click on and off. Im not getting pressure built up to get to the injectors. Question,,, on the pressure regulator,, if I cant activate the diaphram by vacuum, I mean,, I put the vacuum line on a running engine with a vacuum hose, the diaphram is not moving one bit, you can look into the regulator and see if it is moving,,,, Does the vacuum line actually open the regulator? If it does, and even high vacuum dont move the diaphram,,, would the regulator be shut off and not allow the fuel to just reach the schrader valve and not pressurize and circulate?? That new fuel pump shoots a stream out the line 2 feet long! I betcha I can fill a bucket pretty quickly. Yesterday, I did manage to get the car to start on its own,,, ran very good!!! I took it down to the corner and back, ran fine, then I floored it,,, it started surging and died again and will not even to offer to start. I got fire to the plugs,, trust me, I got zapped!! and I took every plug wire off and tested them. Like I said, I can pour gas into the throttle body,, and it purrs like a kitten till the gas runs dry,, Dont misfire, nor throw a trouble code out to the check engine light. About a week before it broke down, the check engine light came on and back off, I ran the code, was a lean O2 sensor,,, I cleared the codes, and it was fine,,, Thats why I belive nothing electrical is wrong,, just aint getting no fuel past the regulator to build up the 65 psi of gas pressure this system requires. The regulator,, I cannot get the spring loaded, vacuum operated diaphram in the regulator,,,to move by hooking up a hose to it with vacuum pressure, unless,,,,, the fuel pump pressure help aid to open the regulator,,, Book dont really say on how it works,, just how to change it,,,

Replies:

• Re: OT, Chevy Lumina up and died! KEB 11:10:27 04/28/06 (0)
• Re: OT, Chevy Lumina up and died! Bob 08:43:14 04/28/06 (0)

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