There is a base idle adjustment procedure:
However, I would suggest some further searching for the power steering
sensor switch.
If there is in fact "no switch" get back to me, and I'll send you the base
idle procedure.
Allowing the pump to send more volume, by enlarging the orifice, will load
the engine a bit, as if you have the wheels partially turned.
The ECM opens the idle air a bit, then if you turn the wheel completely to
one side, the A/C compressor will shut down, until the load is removed
slightly.
RK
"DB" <x@[EMAIL PROTECTED]
> wrote in message news:13is6agbd4he68a@[EMAIL PROTECTED]
>
> "« 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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