"« Paul »" <zxcv@[EMAIL PROTECTED]
> wrote in message
news:472E15F4.EDBA4184@[EMAIL PROTECTED]
> DB wrote:
>>
>> "« Paul »" <zxcv@[EMAIL PROTECTED]
> wrote in message
>> news:472E0254.1AAF4A90@[EMAIL PROTECTED]
>> > DB wrote:
>> >>
>> >> "« Paul »" <zxcv@[EMAIL PROTECTED]
> wrote in message
>> >> news:472D6514.E43954B3@[EMAIL PROTECTED]
>> >> > William H. Bowen wrote:
>> >> >>
>> >> >> "« Paul »" <zxcv@[EMAIL PROTECTED]
> wrote:
>> >> >>
>> >> >> >DB wrote:
>> >> >> >>
>> >> >> >> 93 Grand Am, 6 cyl. 3.3
>> >> >> >>
>> >> >> >> Power steering was poor at low RPM. Modified pump by
enlarging
>> >> >> >> hole
>> >> >> >> in
>> >> >> >> pressure fitting (50%). Now steering is GREAT but idle is
>> >> >> >> effected.
>> >> >> >> Idle
>> >> >> >> goes high then low, high then low. I want to keep the rig!
Can
>> >> >> >> I
>> >> >> >> over ride
>> >> >> >> idle problem?? Is it drag on the motor or some sensor?
>> >> >> >
>> >> >> >The pwr steering won't affect idle.
>> >> >> >Do the usual: clean the maf, iac, throttle body, look for vac
>> >> >> >leaks,
>> >> >> >check the tps and O2 voltages.
>> >> >> >If that don't fix it, then remove the ****ft indicator and
>> >> >> >re-solder each solder connection on it.
>> >> >>
>> >> >> Paul,
>> >> >>
>> >> >> I STRONGLY disagree with your first statement - a changing
load
>> >> >> on
>> >> >> the engine will affect idle. By enlarging the pressure inlet DB
has
>> >> >> increased the load of the PS pump on the engine.
>> >> >>
>> >> >> I will agree that he needs to verify all the regular stuff like
>> >> >> vacuum hoses etc. (did something get disconnected or damaged
during
>> >> >> the work on the PS rack?) - the "up and down" idle sounds like a
>> >> >> air
>> >> >> leak (IAC motor is fighting to control air flow and the higher
the
>> >> >> engine load at idle the harder it is for the IAC to do that if
you
>> >> >> have an air bypass around the IAC).
>> >> >>
>> >> >> It is also im****tant that the PS pressure switch be
connected.
>> >> >> That switch senses PS pressure demand and triggers the ECM to
>> >> >> increase
>> >> >> the idle power and cut off the A/C compressor. The switch is
either
>> >> >> mounted into the PS rack valve body, mounted to a "T" in high
>> >> >> pressure line or mounted in the PS pump (been awhile since I've
>> >> >> worked
>> >> >> on an "N" body with a 3.3 so I'm not sure where it is mounted in
>> >> >> that
>> >> >> car).
>> >> >>
>> >> >> Regards,
>> >> >> Bill Bowen
>> >> >> Sacramento, CA
>> >> >
>> >> > I completely agree.
>> >> > However, I was assuming that he meant while sitting still and not
>> >> > moving the steering wheel.
>> >> > BTW, that car does not have a power steering pressure switch.
>> >>
>> >> I did mean while sitting still and not turning the wheel. It
started
>> >> immediately after I rigged it. That's why I'm confident it's the
rig.
>> >> Is
>> >> there a rack sensor??
>> >
>> > See above.
>> > I don't see why the pressure would change enough to affect
>> > the idle without turning the wheel. It is just sitting there.
>> > About the only way to make sure is to undo the belt.
>>
>> I believe the rig is creating extra drag on the motor (as William
said).
>> The system senses it and compensates by increasing the RPM's. Almost
>> immediately the drag decreases at the pump pressure goes high and the
>> systems reduces RPM's. After 2 seconds it happens all over again.
Can
>> I
>> adjust the sensitivity of the system or the Idle so it won't do this??
>> DB
>
> My same car does not have a pressure sensor.
> Let us know if you find one. You will have to do more
> diagnosis.
> I can't help any further. Sorry.
Can I adjust the sensitivity of the system or the Idle???
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