AndyR

***UPDATE*** I have found out that the Astra G mk4/5, doesn't actually have a separate switch/sender for the electric cooling fan in the radiator. It is however integrated in with the sensor for the temperature gauge, and apparently the ECU senses the spike in temperature and tells the fan to kick in. But as mine isn't doing this because my gauge is not reading correctly, the ECU isn't sensing the engine temperature properly, hence why I've had some over heating issues. So this morning I have ordered a new temp sensor, and will be replacing the old one. I'm going to leave the fan hard wired for a bit just to make sure things are working as they should. Sorted in time for the lovely hot spell. 🌡

Hi Nev, and welcome to the forum. Have you tried replacing the battery in the key fob? I had the same problem with my key fob and central locking system. When I replaced the battery it worked fine, but then the key got dropped, and the battery carrier in the key broke away from the circuit board. So at the moment I'm doing it the old fashioned way with the key in the lock. Also if the battery is ok, then you may need the key re programming back to the car. Hope this is of help. Regards Andy.

Thanks for the correct description Trevor, now I know what to look for.

This is the item I am wondering about.

Well i had a play with the electric cooling fan today. Putting a direct live feed to it, and it worked fine. But it doesn't kick in when engine gets hot in traffic. I have no Thermo switches on the radiator itself, but there is what looks similar to the heater blower resistor on the fan . Could it be this at fault?. Also checking the fuse box, and found that the fuse which I think relates to electric fan is missing. So brother in law is going to do a circuit test tomorrow to see if there is any power to the fan. Will then replace fuse and see what happens.

I did give egr a clean out with carb cleaner, but I think the new one will be a vast improvement. Here's hoping for some nice weather over half term so I can give it a good run up the coast.

Will do.

Well I gave the EGR a zap from a battery. And it jammed open. The only way to get it to shut was to tap it with a hammer, so I'm guessing that it's a non-runner. I did read that you can blank off the EGR valve, but leave it connected, and that it should give better fuel economy. Well I gave it a try last week, and the results were to un-blank, and run with it connected properly. My fuel economy dropped through the floor, compared to what I was getting. 1/4 of a tank to go 52 miles. Now running with EGR in place, and fuel economy is back up to where it was before. I shall run some injection cleaner through the system too, and hopefully that should clear out any residual crud. Andy.

Hi Trevor, thanks for all the links regarding auto box oil change. I've had a look through them, and the video of "Changing the automatic gearbox oil in a Vauxhall Corsa" is the one that seems to be the closest to mine. But it doesn't mention the filter. I think it might be worth a trip to the local vauxhall dealers to see if they can point me in the right direction. Wish me luck.

Good to hear you've sorted it out.

Hi Peter, there was a post on here back in 2020, December I think. Kenneth Johnson was mentioning about a diplomat for sale that needed some work. Don't know if there was any takers at the time. Might be worth giving him a message. He is on the forum in the Carlton group. Hope this is helpful. Regards Andy.

Yay mobile again. Glad to hear it's all good. Look forward to hearing about a successful fix on the roof.

Cheers Trevor, a job for the weekend me thinks. I will give it a live feed first to make sure it's working. And if the fan has died, I'll replace with the one from old car.

Hi all. Back in February I did a ATF change. It was black and smelt like normal gear oil. I am looking at doing it again, but this time replacing the filter too. Can anyone advise me on where the filter might be please. And I understand that there are variants of the gearbox, so if anybody knows of the type too, that would be great. I took a picture from under the car of the gearbox if this helps. Thanks in advance. Andy.

No worries Steve, I hope it works out ok.

Hi Mac, you have shared this post from 4 years ago, but haven't actually commented. Is there a particular reason? Maybe you could have an idea on this problem that you would like to share with the forum. AndyR.

Hi Steve, welcome to the forum. There are a few videos on YouTube that show various ways of resetting your service light. It all depends on the year of your car, as to which way to do it. But they all involve twisting and turning the left-hand stalk on the column. There is one that shows it being reset using the controls on the steering wheel too. It would probably be an idea to watch them and see which is your car, and then play the video step by step whilst sitting in the car. I hope this is of help. Regards Andy.

It's about the only idea I could think of with having the same plug either side. The air sensor is one plug, and it's right in the middle of the bottom front bumper grille. Got a feeling I'm going to have to hard wire the fan to a manual switch. Would the coolant fan be the one on the inside of the engine bay? And the aircon fan the one on the front?

Well I've been servicing the car today and had a look about with the wiring. And I have found exactly the se plug behind the horns, swinging in the breeze. So I'm guessing they could be for driving lamps.

Cheers Trevor, I did wonder if the rad had been replaced. I will have a check around to see if there is somewhere it connects to. When it stops raining and blowing a gale. Andy.

Hi Grimesy, welcome to the forum. Have you tried following the wires back to see if there is any damage causing the failure in power? You have certainly had a variety of vauxhalls. Which model of viva did you have back in the 80's? I had a 2 door HB saloon. I've also had a 1990 Cavalier Sri back in 2004, and now I am on my second Astra G mk4. Regards Andy.

Hi Trevor, picture of said plug. Hangs behind nearside headlight beside radiator.

I guess the sudden stop caused the engine mount to fail. Hopefully once the garage has done the mount you can get back to fiddling with that roof problem. Sun is due out soon.

Hi Koolkuts, Welcome aboard. Does sound like a lot of problems you are facing. I am not up on diesel engines, but your temperature problem is very similar to my own, which is on my Astra G. I gave mine a good flush through of the cooling system, and put in fresh coolant. I also replaced the temp sensor too. Now the gauge reads correctly, but I have not had a cooling fan since I bought the car. I AM looking at fixing this problem. Hope this is helpful. Regards Andy.

Thank you. I'll give it a try at the weekend. I have a spare battery, so I'll be using that one. Save having any short circuit problems with the car. I know they work on a similar basis to a thermostat. I will let you know what happens. Andy.