[200q20v] Overheating issues
b.m.benz at prodigy.net
Tue Feb 20 09:07:31 EST 2001
For your sake I hope that I'm wrong, but IMO, you may have major problems!
You said that the rad. hose blew off AGAIN, implying that it has blowen off
before and that maybe you reconnected it and tightened the hose clamp. Yes?
With a known tight hose clamp, the only cause must be excessive coolent
pressure and with enough volume that the over pressure valve in the coolent
cap can't handle it. You have a blown head gasket leaking into the coolent
system! Get a compression check.
These engines are bullet proof! The only thing than can blow the bottom end
is running without oil. The only thing that blows the top end is running
without coolent. If allowed to severely overheat, the head will warp and
the head gasket will blow. If so, the head must be removed, disassembled
and planed flat.
> From: "digital leopard" <digitaleopard at hotmail.com>
> Date: Tue, 20 Feb 2001 14:14:05
> To: 200q20v at audifans.com
> Subject: [200q20v] Overheating issues
> Ok, I am frustrated and need some help. Got the car back last week, and
> yesterday got the overheating alarm driving home. Looked out the back, and
> sure enough, blowing steam. Not a big deal, the upper radiator hose blew
> off again. Got it home, let it cool, added coolant. Now, get up today, and
> the overheat alarm goes off almost as soon as I start it up. No forseeable
> reason. Turned it off after making sure that the coolant is in the system.
> Goes off again, even though the actual temperature is ok. Eventually it
> turns off, but on the drive there, the temperature slowly gets over the
> normal mark and it goes off again. Evidently the fan is not working.
> Any suggestions? I mean, I love the car, I don't want to get rid of it; but
> I have to have a reliable car; if I get a call from work, I HAVE to get
> there. If the car is overheating during the drive, it's going to overheat.
> Does anyone have any suggestions about the fan? I'm going to check the
> fuses when I get home, but that's the extent of my electrical skills.
> Anyone seen any problems with fans simply not working before? Has the heat
> killed it? And;
> Is there anyone here in the Denver/Boulder area who wants to try and help
> with this? As I said, I don't have the requisite skills for the electrical
> skills; I will be glad to provide (semi-unskilled) assistance, parts, lunch,
> etc. as needed. But I can't get the car into the only good dealership in
> the area (Stammler) in less than six weeks, and the car would be a low
> priority for them anyway. So, I need to go (network alarm) but can anyone
> help? Thandks-
> Ron Merrell.
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