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1

Omega General Help / Re: Coolant leak

« on: 09 October 2011, 18:34:22 »

I'm not in the UK, but in the Czech Republic . So it's an Opel, and I just realized that i didn't say that it's a post-facelift B with climate control (apparently it matters ).

By the way, I did check the other coolant leak topic (it's still on the first page even), but it seems to involve a completely different spot.

2

Omega General Help / Re: Steering noises and rough cold idle

« on: 09 October 2011, 18:23:25 »

Thanks for the suggestions! And sorry for bringing up this old topic again, but I thought this  information might help someone later.

For the steering noise I took the car to my mechanic, sadly they were shutting the business down; in fact it was their last day and they already got rid of most tools. Still, they guy left in charge was nice enough to get it up and help diagnose the problem. His conclusion was the right strut bearing, since there was more noise and vibration coming from it. Since then the noise went away, so it'll wait until something else on the front suspension needs to be done.

The unstable engine speed when cold seemed to have been fixed by cleaning the MAF with one of those magical sprays, thankfully. There's still some clunking when the engine is cold, and I now suspect it could be both lifters and the exhaust since a) the noise is more distinctly clicky if I start driving and b) there's a slight exhaust smell if I stick my head under the bonnet. Both only apply while the engine is cold, after that it's quite and doesn't stink. I suspect I might need to take it to someone who knows what they're doing soon

3

Omega General Help / Coolant leak

« on: 09 October 2011, 17:50:29 »

Hi everyone,

Recently I replaced the battery since the old one died, and then I gave the car to my dad, thinking he'd use it while I was away for two weeks for work, thus preventing the battery from draining if there's an electrical issue. He didn't even start it once, but thankfully there were no further issues and the car started just fine.

Except that while it was standing there, the radiator apparently developed what I'd call a moderate leak. I could drive it in an emergency or to a mechanic, but it's leaking a bit too much to comfortably drive every day. Luckily, I recently bought an NB MX-5, I just need a warm hat so I can drive it in this weather . So I just drove my Omega for a while to heat the car up, and was able to see the problem fairly easily, as steam was coming off from the spot:



It already dried out a bit while I went to get the camera, but I think it's pretty clearly coming from here, I'd say where the plastic and aluminium parts are joined.

Can those little clips be clamped tighter, or is there a gasket or something that can be replaced or sealed somehow? Any other suggestions? A new radiator is the obvious solution, but I'd rather spend the money on the much needed rocker/valve cover gasket, timing belt, camshaft seal, and rust fixing right now.

Thanks!

4

Omega General Help / Steering noises and rough cold idle

« on: 22 May 2011, 14:39:46 »

Hi all, there are a few issues that came up recently with my Omega B 2.2 that I'd appreciate some suggestions on.
[olist]

A few days ago I noticed a rather unpleasant sound coming from somewhere in the engine bay when turning the steering wheel (in any direction). It sounds kind of like suspension creaking, which is what I thought it was at first when I was making a U-turn over a rough stretch of road. My other thought was power steering, but I checked the fluid level (a bit low, but still plenty in the tank. Any brand that's Dexron IID will do, right?), and otherwise it works ok.

The noise is present when moving slowly and when stopped, also with the engine off. Here, I tried to record something with my phone on the engine block:
http://s3.amazonaws.com/mobby_6kl/steering.mp3
Any ideas what it could be, or how to better diagnose it? At least, would it be safe to drive for a few days before I can have someone who knows what they're doing look at it?

• Engine runs rough and rattly when cold, but I can barely tell it's running once wared up. I know it's normal when it's really cold in the winter, but now it's t-shirt weather here. The car starts fine, but RPMs jump to about 1.5k (normal idle is maybe 700-800?).

Bizarrely, it seems that when I start it in the morning at home, it stays high for ~5 seconds, then starts dropping to normal. But starting in the garages at work, it seems to hoover between 1.5-2k rpm until I get tired of it, and put the autotragic in neutral, at which point it drops to normal and I can drive off.

I suspect there might be a crack or a bad seal in the exhaust somewhere that gets sealed by expansion, but it doesn't seem like it would explain everything. It was already suggested to me that I try checking and cleaning the airflow sensor, which I'll do once i pick up the cleaning spray tomorrow. Anything else I could do?[/olist]

Many thanks in advance!

5

Omega General Help / Strange pulsating noise at low speed

« on: 13 September 2009, 11:03:09 »

Looks like it's time for another problem. Since the last time I posted with a problem here, I had the rear left wheel bearing replaced, and the headlight leveling system reported an error but then somehow fixed itself  :)

Now there's another problem. From about 20 km/h there's a weird, pulsating noise coming from somewhere which is probably the loudest at around 30km/h, but then quickly disappears as I accelerate. It's hard to describe, as I said it's pulsating, as if something was grinding only at a particular spot during rotation. The noise appears to be dependent on road speed and not engine speed, as I can let it drop to ~1k RPM when going downhill or coasting to a stop.

I tried to record the sound with my phone, so hopefully it's good enough to hear what's going on.
Download the mp3 here.
 From a complete stop I slowly get up to about 25-30 km/h and stay there for a bit (from about 8-10 seconds), then accelerate to about 70 just to see that the noise isn't there. You can also heart it at the very end when I slow down into a turn. The noise isn't necessarily as loud or as quiet as it might sound, as I messed with the volume in a sound editor.

To me this sounds nothing like how the bearing did, although I didn't get to try the usual tests (sharp turns, etc). There are also some quite ticking noises at the beginning, but I suspect that's just the key chain banging on something. The car is a 2001 Caravan 2.2 automatic, with about 145k km. So, any suggestions what might be causing this, or what can I do to try to find out? Thanks.

6

Omega General Help / Oil leak on a 2001 2.2 petrol

« on: 25 May 2008, 20:31:09 »

During a recent routine check (ok, washer fluid fillup) I noticed some oil under the oil filter. The first suspicion was on the filter, but it was completely dry. We (my dad had a look too) cleaned up the visible oil stains, and the next day there was a small puddle of oil approximately under the crankshaft pulley. The leak is not catastrophic, the level stayed right in the middle of the dipstick range for at least few days.



The marked part is approximately where the new puddle formed. We were at a loss for a while, since everything appeared dry as far as we could see/touch. Luckily, there's a lot of space in there with the I4 engine, so I stuck a camera down there and this is what I got:



So... there. Couldn't get a better shot due to lighting and lack of space. It's not very likely that we'd be able to fix this ourselves due to a lack of tools and garage, but I'd like to hear some opinions on what could be the common problems with symptoms like this. The last cambelt and front brake rotor change cost quite a bit more than I hoped so at the very least I'd have some points of reference.
Thanks in advance!

7

Newbie Welcome Area / Hello!

« on: 25 May 2008, 19:18:31 »

Hi everyone!

I've been reading the forum from time to time, and now that I have a question I finally registered. I'll post the question (regarding an oil leak) in the General Help section later.

Here she is, a 2001 2.2 Caravan automatic.



You guys look like a kind and helpful bunch, so it's nice to finally join you!

PS. what are the general rules for posting images, is 640x480 ok or should I stick to thumbnails?