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Pampered-Z · 09-24-2007, 11:53 AM

Where did you get the info from? The quad drive is a OBDI code common on the 93's/94's. For a 95 you should be able to pull the code for the exact curcuit that's falling.The Quad drive curciut is emmisions related and is an electrical curcuit test, or maybe you have the wrong reference chart?

I would reset the ECM and retest, and possible verify you have the write refernce chart, 93,94 and 95+ do have some differences.

But I'd guess you're probably looking as one of the following; Charcole canister, Airpump, vent purge and I think EGR. The ECM is looking for a signal and one of the relays is not getting the proper voltage, sometmes it can throw a code it the EGR valve is stuck or vacuum line is off/leaking and the relay/sensor is stuck in an open/closed state giving the ECM the wrong reading.

The most common reason for the Quad drive failue is a faulty air pump or blown fuse. Start the car and make sure you hear the pump running. There is a valve for the charcoal canister up above the fuel tank. it's a Pain the butt to get to, but it's very rare for it to fail.

09-24-2007, 11:53 AM	#3
Pampered-Z Sliderule / Moderator Join Date: Oct 2004 Location: Catawissa PA Posts: 2,294 iTrader: (1)	Where did you get the info from? The quad drive is a OBDI code common on the 93's/94's. For a 95 you should be able to pull the code for the exact curcuit that's falling.The Quad drive curciut is emmisions related and is an electrical curcuit test, or maybe you have the wrong reference chart? I would reset the ECM and retest, and possible verify you have the write refernce chart, 93,94 and 95+ do have some differences. But I'd guess you're probably looking as one of the following; Charcole canister, Airpump, vent purge and I think EGR. The ECM is looking for a signal and one of the relays is not getting the proper voltage, sometmes it can throw a code it the EGR valve is stuck or vacuum line is off/leaking and the relay/sensor is stuck in an open/closed state giving the ECM the wrong reading. The most common reason for the Quad drive failue is a faulty air pump or blown fuse. Start the car and make sure you hear the pump running. There is a valve for the charcoal canister up above the fuel tank. it's a Pain the butt to get to, but it's very rare for it to fail. __________________ 93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada 1) Build it 2) Race it 3) Break it 4) Repeat!!!