Cruise Control, rough idle

Tuckerman · Post by **Tuckerman** » Fri Jul 07, 2006 8:14 pm

I have a 1990 GX AWD Auto Wagon. If I turn cruise control on while the car is in park or neutral the car idle goes up and down in an unusual manner. Is this normal ? If not what would be causing this ? I also have a Turbo RS Sedan which idles fine when in neutral with cruise control on (although this car is manual so I thought it may be something to do with the Wagon being auto.)

MUDRAT · Post by **MUDRAT** » Fri Jul 07, 2006 9:39 pm

When you say the cruise control is "on" in Neutral or Park, can you be more specific? Do you mean setting the speed to 0 km/h?

Chris_Rogers · Post by **Chris_Rogers** » Fri Jul 07, 2006 10:11 pm

is the cruise OEM or aftermarket?

vincentvega · Post by **vincentvega** » Sat Jul 08, 2006 2:13 pm

GX wagons all have factory cruise.

there is a button you press to enable it (like most cars)

I assume this is what he means by "on"

you cant set the cruise under about 55kph anyways

Chris_Rogers · Post by **Chris_Rogers** » Sat Jul 08, 2006 8:11 pm

which is why I asked?

Tuckerman · Post by **Tuckerman** » Tue Jul 11, 2006 11:46 am

Thanks for the replys. Maybe I should clarify my description a bit more! yes it is the factory cruise control, by on I mean the button on the right hand side of the dash that you must press before you can use the stalk on the steering wheel to set a speed.

When the car is at a stand still and in either park or neutral as soon as you turn that button on the dash on the car idle surges up and down (by a few hundred revs) and sounds very unhealthy. The cruise control works fine in every other respect.

On my manual I can leave that button engaged when the car is at a standstill and in neutral with out it idling unusually.