Infiniti

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Brian Houghtby - 09 Oct 2006 22:10 GMT

I have an Infiniti J30. I know it has the same engine as the 300Z so I'm
going to post a question here since this seems to be an active group and I
am pretty sure the issue is engine related.

Quite frequently from a dead stop the car is a real dog, doesn't miss or
hesitate just serious lack of power. Feels like someone hooked a semi truck
to the back of it or someone is holding the brakes when I try to accelerate.
Once it hits about 3K rpm's it takes of better but still no like usual. It
doesn't seem to do it nearly as often when it is cold (first started in the
morning) or the ambient temperature is under 60 degrees. I have just
noticed this lately since it has cooled down some here in Ohio. I have
replaced the plugs, air filter and fuel filter. Any suggestions would be
great! Was thinking the mass air flow sensor but they are kinda pricey to
try out and not be the issue.

Brian

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amstaffs@home.com - 09 Oct 2006 23:03 GMT

>I have an Infiniti J30. I know it has the same engine as the 300Z so I'm
>going to post a question here since this seems to be an active group and I
[quoted text clipped - 12 lines]
>
>Brian

check your idle air control valve. Also check your throttle body to
see if it's dirty.

You didn't say how many miles you have on the car but it's possible
that your battery is also in need of replacing.

Keep in mind that a bad battery and/or alternator can send the wrong
voltage signals to the computer. If the computer gets the wrong
voltage signals, it can significantly affect engine performance
because it will either shut down engine speed (thinks it's going
faster than it really is), or starve the engine.

This is not usual since the advent of onboard computers starting from
the early 80's forward.

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Shredder - 10 Oct 2006 13:07 GMT

Sorry, it is a 97 with 145K miles.

>>I have an Infiniti J30. I know it has the same engine as the 300Z so I'm
>>going to post a question here since this seems to be an active group and I
[quoted text clipped - 31 lines]
> This is not usual since the advent of onboard computers starting from
> the early 80's forward.

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amstaffs@home.com - 11 Oct 2006 02:54 GMT

>Sorry, it is a 97 with 145K miles.

then most definitely I would recommending checking the items I
mentioned in my previous post.

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