92Q won't start..

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estil0
Posts: 18
Joined: Tue Jun 26, 2007 10:22 am
Car: 92 Q45

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The day before the Q wouldn't start there was fluctuation in rpm and not enough fuel pressure while accelerating. It's not flooded. Bypassed fuel pump module, still wouldn't start. Any suggestions ?

Also, swapped motor w/ jdm approx: 60k miles. Everything replaced in bay that needed to be.

I'm curious to hear ALL thoughts.

Thanks.


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Infinitiguy19
Posts: 7787
Joined: Sat Dec 22, 2007 4:58 pm
Car: 1993 Infiniti Q45 188580 Miles
1994 Infiniti Q45a 240000 Miles

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If I had a penny for every time I heard that title on a topic....

I think your car is flooded or the fuel pump is finally dead. Do you hear a buzzing noise when you first turn the key to o"On"?

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estil0
Posts: 18
Joined: Tue Jun 26, 2007 10:22 am
Car: 92 Q45

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lol Nope no buzz. My guess was that also, but the pump was relpaced with oem about 10yrs ago. How long is the life-span ? I pulled the fuel pump fuse, open throttle, turned the key a few times.. Still nada. Bypassed the fuel pump module and still no fire.

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Infinitiguy19
Posts: 7787
Joined: Sat Dec 22, 2007 4:58 pm
Car: 1993 Infiniti Q45 188580 Miles
1994 Infiniti Q45a 240000 Miles

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I assume you grounded the fuel pump when you say bypass?

Fuel pumps last about 10 years I think but its the millage (amount of time its working) that matters more.

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goody90q45
Posts: 3679
Joined: Wed Aug 17, 2005 2:07 pm
Car: 1992 Infiniti Q45 (sold)
Location: Orangevale, CA

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Is the check engine light on today or before the no-start condition? Any stored codes in the ECU? If no codes it probably is a fuel delivery problem. If a MAF code is present.......

Since your idle was fluxuating take a look at your MAF connector and MAF pins so make sure there's no corrosion and the connector pins are tight. There should be almost no up or down movement to the connector when you wiggle it and it should almost snap into place when the connector is put on.

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estil0
Posts: 18
Joined: Tue Jun 26, 2007 10:22 am
Car: 92 Q45

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Lol Did ground it btw.

MAF is ok. Pulled hoses and cleaned.Haven't run codes will tomorrow though.


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