>I put pacesetters on and I am not very impressed, it made my
>RPMs go down and I dont know how to adjust it back up
The headers are not causing your idle problems, unless you have an exhaust
leak (maybe--not sure about this). I have the PaceSetters on my 94 XE (also
a 1.6) and they made a world of difference.
>TIMING CHAIN: My sentra has 128k and when I put on the crapy headers I was
>able to feel one of my timing chains and it had about 1/4 in. of play. It
>is
>the original chain and I want to know if I can tighten this play up by
>adjusting the tensioner? If so, How do I adjust it and how much trouble
>would
>it be?
Whoa, whoa, whoa. First, there is only one timing chain, second of all,
there is no reason at all you would expose it during a header installation.
You would have to remove an awful lot of stuff to get to it. Are you sure
you don't have your terminology mixed up? Do you mean the accessory belts?
>TPS SENSOR: I replaced my sensor in hopes to gain back some horsepower and
>eliminate the RPM fluctation that I am getting but it didn't work. Is there
>anything that I can do to get a better throttle response? If so, please
>tell
>me how. Maybe I need to replace my MAP Sensor.
First, TPS's rarely go bad. They need to be calibrated so that they are
reading a certain voltage at idle and a certain voltage at full throttle.
Your's is probably out of whack. Look around on Sentra.net for full details.
Second, your car doesn't have a MAP sensor. MAP = Manifold Absolute
Pressure. Hondas use this inferior method for metering airflow, but Nissans
use MAF sensors, which are much better. MAF = Mass Air Flow sensor. These
also rarely go bad, but it possible. You should check voltage output on this
also.
As to your idle fluctuation, there are a number of things that can cause
this. 1)check for vacuum leaks in your intake piping and all of the various
hoses attached to it. 2)check your PCV system for proper operation, as well
as the EGR system. 3)Get a can of carb cleaner and clean your throttle body
and intake manifold--this is a very common offender as well. 4)Check your
timing, using the proper method and a timing light. Set it to 15 degrees and
make sure to use high octane gas. 5)adjust your idle via the idle adjustment
screw on the sensor on the intake manifold (NOT on the throttle body!)
It is *EXTREMELY* important to follow proper procedures when messing with
the idle or timing. Nissan computers are very smart, but you have to do
things the right way or you will mess shit up. Get the info online, from a
Haynes manual, or the Factory Service Manual before you touch a thing. Don't
just go adjusting the distributor or idle speed. You must know what you are
doing or you will make things worse.
JWolfe
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