Ok guys,I could really use your help again. There are two aftermarket sending units available for my '86 Pontiac Parisienne wahgon. They both look identical, so which one is correct for my Wagon. The two offered by Spectra are # FG 10 A, and FG 10 G. Even the guys at the parts store and dealerships don't know. If anyone has installed one in a similar car,please let me know the one you used. Thanks !..................Wayne wayneadam@ptd.net
At rockauto.com, both show as applicable to your vehicle. But the 10G is labeled "second design," and, if you look carefully at the images of two, and if I'm not mistaken, the arrangement of the three lines coming out of the top is not exactly the same. Can you pull your old one out and compare it to these? In the end, my guess is that either would work. Interestingly, at rockauto.com, the 10A is about $4 less than the 10G. Also, won't the supplier you're working with let you return the one you buy first if it turns out to be the wrong one? You should be able to determine this without installing it on the car. I'm assuming you'll know as soon as you hold the one you bought next to the one that was on the car. FG10A: FG10G
Thanks! Thanks guys, Looking at both of them,it appears that either one will work. I will order the FG10A, the FG10G I believe is just a slightly updated version............Wayne PS...I'll try to keep you posted on the installation.
You guys must fail miserably at the "find ten differences" quizes. Look closely at the shape of the tube that goes INSIDE the tank. Also look at the float and sending unit. Additionally, while it's hard to tell for sure in these photos, the two outboard tubes that attach to the hoses appear to be different diameters.
Joe I could never find the differences in those newspaper cartoon quizes either. I see the two outer lower photo pipes are larger but that's why clamps tighten more. The angled down tube may or may not affect how it works. I'd bet either will work. I replaced the sending unit in my 55 Chevy wagon at least twice and it is still not registering right.
I think that's the problem. A station wagon sending unit is difficult to get in. I probably bent the arm uncorrectly too many times! That was why I bought another to try again. When it was also off I bent it several ways. I just try not to let it get too low on gas.
The way I've set them is to remove the tank and prop it the way it's installed in the car and, after emptying it, pour in two gallons. Hook up an ohmmeter and push up 1/4 inch on the arm. That's pretty close to having it show just below empty, while having a 2-gallon reserve. Place the unit into the tank and watch the ohmmeter. You want the reading when the float is in the gas to read where the earlier reading ended up. No change, it's too high, so bend it down and up if the reading changes past the set mark you made. That should get you into the ballpark.
If you've ever removed a 55-57 Chevy station wagon gas tank you will be happy with whatever the guage reads after reinstalling it. The rear axle has to be slid forward. Those tanks have a large indent for the differential and the gauge is at the top front. I actually believe the float arm gets bent on installation. I really don't remember now how it's off. I think it only goes to 3/4 then when showing empty there is maybe 1/4 tank. Since changing to Dakota Digital dash it seems better. Seems like many older vehicles have fuel gauge problems. I just fuel up often and don't worry. We've always wanted to drive the 55 Chevy back to Illinois 1000 miles. Then I would be more concerned. However I've driven many 55 and 57 Chevys that far on vacations and can't remember running out of gas. But walking down a highway at my age is not in my plans. I guess I could send my wife.
