I need to replace one of the radiators on my audi 90 (non quattro). It appears to have a radiator with cooling fan near the drivers side wheel well. Then there appears to be another radiator in the front behind the grill. This radiator is leaking badly. Does anyone know a part number, proper name, or where to get the part? Is it actually another radiator or is it something for the AC or tranny or something?
I bought the car not running for $300. I changed the starter and battery and it now runs ok but leaks the coolant out in a matter of 8 minutes.

Can you see the color of the fluid that is leaking?

Dog,

An oversight, I'm sure, but he did say it leaks the coolant out in 8 minutes.

The tranny cooler, on an auto, is bolted to the tranny, clear at the back, where you can now reach it.

If memory hasn't failed me completely, I think my old diesel had an engine oil cooler directly behind the grill, about centerline of the car. Check it out, you should see 4 lines coming from it, coolant in and out, engine oil in and out. That should not be a really expensive part, although, you know, being Audi...

My daughter burst the hose on the oil cooler coming down from Erie, filled the rad, drove again and again till the engine locked up.

Temporarily, I would say, you could plug the coolant hoses to try the car out, watch the engine oil temp, if you have a guage, till you can find a new or good used.

My book is only for the 5000, and non diesel, doesn't show that cooler.

Is this thing about 6 or 8 by 12 inches or so? An inch or so thick?

Cheers,

George

I was curious about the color of the fluid since that should determine which of his three radiators is leaking. A/C should have no color, A/T fluid is usually red, and engine coolant usually green. Is there more than 1 radiator on the car that hold engine coolant? If not, and the fluid is green, he should have no trouble getting the correct part. Im not familiar at all with the 90, that was just my method of thinking with cars in general. If engine coolant is leaking out that fast, he might be in need of a head gasket by now ;)

Thanks for the help guys. It is engine coolant and it is green. I ran the car for a while and saw some fluid on the ground. I shut the car off and checked it out. I found where it was leaking and it was a fast enough leak that it emptied pretty quick. I refilled the coolant, with antifreeze, and ran the car again. It again leaked green coolant from the radiator like device behind the grill. The main radiator is near the wheel well on the drivers side. THis radiator is connected to the overflow/coolant fill tank. It has a fan for cooling. It is hosed from this radiator to the front device that is leaking. They both share common coolant. There are two additional lines that go to the leaking device but I don't know what they are from. I will try to find that out tomorrow.

Redrum,

I just went to look at my old Bently from '77-'83, and it shows an "Auxiliary Radiator", off to the left of the main radiator. From the sketches, it does not seem to be an oil cooler, at least in those years.

My 2 Haynes manuals, '77-'83 and '84-'88, do not show it. Perhaps someone has a Bently for your year and can comment.

What year is it, BTW? I think the 80, 90, 100, 200 came to the US in '89.

Cheers,

George

1989 5 cylinder A90, non quattro. I was thinking it might be an aux radiator. The car was in a light front accident and I replaced the front bumper and headlights and one fender but the accident also damaged the radiator.

Red,,

I see you're online, now. Skipped past ypur question till I saw you there, came back.

I think, at least temporarily, you can short circuit the auxialary rad. Just put a piece of say 1/2 ID copper tubing into both hoses, clamp 'em tight.

At least keep you running, and at the price of antifreeze today, keep you in gas money.

Cheers,

George