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*It basically adjust the steering feel when going thru a parking lot and then tightens up when on the highway or Interstate*. almost......lol, not quite.... the sensor is there to 1. disengage the a/c .... 2. send a signal to the ecm to raise the engine rpm when the vehicle speed is so slow that the engine rpm is to low to adequately assist the needed power steering pressure. When the pressure in the system drops to a pre determined pressure that switch opens, the ecm *sees* that & raises the engine rpm to increase the pump rpm & power steering pressure. The sensor is referred to as Idle Speed Power Steering Pressure Switch

149,996mi I`m thinking about registering for a spot at the Good Guys show in Lebanon, TN next month. Its now open to all American cars `99 and earlier.

Hello, I’m new here but wanted to take the first step toward posting. As you can see in the title I have a 1991 Grand Prix. I just finished getting my DIY exhaust mocked up and ready to weld and I will try to post pictures of it soon as well as other things. I have all new KYB struts and just ordered the rest of the parts I need to build rear coil overs, with the intention of lowering the car a lot. Will start a thread on that soon. Glad to be here.

I finally got around to replacing my dead power door lock receiver. This is a real stinker of a job, there is a myriad of parts you have to remove enroute to getting at the small black box receiver which (on the coupes) is located next to the rear passengers side speaker behind the rear seatback. And you risk breaking any of them along the way. The manual advised that either the upper passengers side or the upper drivers side plastic trim that goes along the rear windows up the C pillar needs to be removed. Well, no way was I going to do that. I managed to get the rear seat to rear window trim panel off without removing those pieces. That was a bit of good luck, I guess. IMHO this was a ridiculous place to put this receiver. I decided to relocate the box to rest on top of the inner fender well in the trunk, using some gorilla tape to hold it on. All covered up by the interior trunk carpet. There is plenty of wire to make this happen, no cutting/splicing needed. Now, if that receiver croaks, this will be a 10 minute fix instead of a 3 hour headache. The only thing I broke was one push pin clip, and I am having a heck of a time finding even that. I programmed the transmitters and all is working just fine, mission accomplished.

Mine's still working, which is a good thing since I can't find one.:( Guess I'll keep my eyes open for a replacement as I'm sure I'll need one at some point. In the mean time I get to try and figure out why my top will go down but not up on it's own. lol

Check the obvious things, is the brake fluid level full? is the switch used to measure it working? Same goes for the parking brake pedal, try lifting on that to see if that causes the BRAKE light to go out High mount won't cause any of that on these cars. As for the ABS, yeah you need an appropriate scantool to read those codes. I use both a Tech1 or Tech2 to pull those codes, if you're anywhere near Pittsburgh I could pull them for you. Likely you have a couple separate issues, but on a 93' the ABS light is a non critical light, you just won't have any anti-lock is all.

If you have a set of the ST springs you'll find the drop at the front is approx 1.5 inches using the original rubber hardware, I had a set of those sitting on the shelf for more than 10 years. I couldn't find any Intrax at the time I was looking for drop springs, last year I finally did the cars suspension, the ST are a linear rate spring like the OEM springs. In my case that is better for the car where clearance is concerned seeing as the tires outer corners are directly under the wheelwell lip, spring compression can't allow contact between the tire & the fender lip, the other 3 bodylines don't display this issue as the fenders cover the wheels entirely. They do rider firmer, but to me that's not a negative seeing as (in my mind) the oem ride is far too soft. The new rear spring is as the chart shows 330lbs. per inch spring rate, this firms up the rear, along with the custom alignment the car corners more exactly, flatter, considerably less understeer. The car doesn't *float* anymore.

Does anyone know if the 91-93 Z34's uses a speed sensor mounted on the steering racks? I know the GP and Cutlass did. It's part # 10096157/10204102 if they used them. Thank you.

Pretty sure every one of these cars use this

yes indeed...

Gotcha. Thank you for the accurate description. I was just making a guess. So...the Z34's do use this sensor as well then?

You're welcome.