Mess of Sensors

Trying to figure out what all the sensors on my quad 4 SOHC are but I can't figure which one is which and I can't account for all of them. Mainly on the back of the engine (exhaust side) there is a sensor bolted into the cam housing (oil pressure?), one bolted in the cylinder head (water temp?), and one bolted into the block (knock sensor?), and one bolted in the thermostat housing (water temp?). As you see I've listed what I think they are but that would leave me having two water temp sensors which I'm not sure my 93 grand am has. Also the cylinder head sensor is only one wire so I thought it may be the knock sensor but it sticks in the water jacket so I figure it must be water temp. I'm at a lost, anyone here know their sensors on the quad 4?

Also am I correct to say the crank sensor is in the block by the oil filter.

You can go to the autozone site, register your vehicle, click on repair guides. In the left column, there should be a link that says, "component locations", you can try that.

On the wiring diagrams, you can look at the color of the wires going to the sensor, the sensors are labeled on the wiring diagram, match the color to the wires going to whatever sensor, under your hood.

Autosones repair guides are being redone and Grand ams are not listed at all through any year right now.

You should have maked them all before you took the engines apart to do the swap!

Without picture identification your dead in the water.
Usually only one thing will plug into a sensor, meaning no two plug are alike.

Good Hunting

I'm doing this from memory, but here goes. The knock sensor on the quads is on the back of the block. Oil sensor is on the head, by the cam(s). Temp sensor is on the back of the head, and the one by the t-stat housing goes to the ecm. T-stat sensor is a 2 wire, oil pressure switch or sensor is a 3 wire, temp sensor and knock sensor are both 1 wire I believe. I'd go look at mine but I sold it last week, plus I had the dohc motor.

I'm doing this from memory, but here goes. The knock sensor on the quads is on the back of the block. Oil sensor is on the head, by the cam(s). Temp sensor is on the back of the head, and the one by the t-stat housing goes to the ecm. T-stat sensor is a 2 wire, oil pressure switch or sensor is a 3 wire, temp sensor and knock sensor are both 1 wire I believe. I'd go look at mine but I sold it last week, plus I had the dohc motor.

Excellent memory, that's the info I was looking for right down to the T. Many thanks. Sold yours last week? Any reason why? I'm in the process of replacing the head on mine and almost done, debating whether I should sell it or not after I finish considering the fact that this car has been like a bottomless money pit lately.

Autosones repair guides are being redone and Grand ams are not listed at all through any year right now.

You should have maked them all before you took the engines apart to do the swap!

Without picture identification your dead in the water.
Usually only one thing will plug into a sensor, meaning no two plug are alike.

Good Hunting

Yea autodrones guides are on the shitter but fortunately I have a chilton manual that oddly enough doesn't give a decent description or picture of where the sensors are located. As far as plugs, I know where they go I just wasn't sure what sensor was what, I'm not accustom to oil pressure senders being located on a camshaft housing looking to the lay mechanic like cam sensors (which fortunately I knew the quad 4's didn't have). But many thanks to you and everyone else that posted a comment.

Autosones repair guides are being redone and Grand ams are not listed at all through any year right now.

You should have maked them all before you took the engines apart to do the swap!

Without picture identification your dead in the water.
Usually only one thing will plug into a sensor, meaning no two plug are alike.

Good Hunting

I went to the AZ site last week before I posted, registered the vehicle in qiestion, found the link for component location.

I just now went to the AZ site, found the component location link, again, on the vehicle in question.

I tried that an hour ago, and the grand am wasn't listed, they are working on the site.

Sold yours last week? Any reason why? I'm in the process of replacing the head on mine and almost done, debating whether I should sell it or not after I finish considering the fact that this car has been like a bottomless money pit lately..

My wife and I are both certified for scuba, plus I have a 6 foot tall daughter. 400lbs of dive gear plus 3 full size adults, car was not happy. 270k miles on it, mechanically it was solid, few cosmetic issues with it, but everything still worked. That car owed me nothing, I just needed something bigger so I bought an 06 xterra.