Topic

Actually, after what you guys just said, I think i'm gonna get the oxygen and the speed sensor looked at. Should I got back to the MG specialist to get this done or is this something my local mechanic would know about i.e. general car knowledge

OR can I fix these problems myself?

P.s. not sure if relevant but when locking the wheel full right there's a rubbing noise like the tire is rubbing on the chasis (right arch) but I can never see anything lose (been like this since i bought it). Could this be the speed sensor thing you were talking about? I could jack the car, take the wheel off and take a few photos tomorrow.

Get that rubbing noise looked at!
Could be wrong size tires, damage to suspension, or (as in my case) the steering has not been set up correctly, allowing more lock on one side than the other (when tracking is done badly, is your steering wheel central when you drive in straight line? I had tracking done at one garage, they only adjusted one side, then re-positioned steering wheel). Result was wheel rubbed on suspension arm on full lock!

Lambda sensor, garage job, as usually rusted up solid!
Speed sensors depends on your experiance and skills, needs each wheel removing and back of hub carefully inspecting. Would you know what to look for?
Have a go, and take some pictures, if you feel up to it.You may save a lot of money.....

I would really recommend you contact Jon and Claire at roughluckracing.com
They are experts on these cars.
They will come to you, sort all your issues and still be cheaper than any garage.

I've had a look under both sides of the car. Left side looks near new. See pictures titled left1 left2 and left3. Right side is bare and smooth as a babies bum. I tried scratching at it to find the indents but nope its just smooth underneath and for some reason... yellow. See right2 picture.

I guess its rusted away entirely.

As for the rubbing its got nothing to do with the ABS cuz my cars a rear wheel drive and the noise is coming from the front right arch. I've looked and it can only be the plastic faring its rubbing against, when under hard right cornering. I've decided its a non issue as the faring isnt even worn.

With regards to the o2 sensor are we sure there's a problem? From watching this video slight fluctuations +-0.1V is normal.

See 3:11:

Note: I have no idea if the average (looks to be about 0.275V) is normal for an MG so maybe something is wrong there.

Footnote: I've only watched about half an hour of youtube o2 sensor videos so could be totally wrong.

Two of my photos didnt upload as they were .6mb too big. I've downsized them.

Edit: Oh and just hover over each image to see their names

Which is front and which is rear?

They are all pictures of the rear. I had a look at the front ones but they looked OK, if a little rusty. Here's a picture of the front left. I'm not 100% that the thing on the left side of the image is a reluctor ring but im pretty sure it is.

djkeenan wrote: wrote:

They are all pictures of the rear. I had a look at the front ones but they looked OK, if a little rusty. Here's a picture of the front left. I'm not 100% that the thing on the left side of the image is a reluctor ring but im pretty sure it is.

Nope that's the disc ventilation. Reluctor rings are on the CV joint around the back of the hub assembly.

https://rimmerbros.com/Item--i-GRID018899

Look at item 67 in this picture on Rimmers website.

from your pictures above it looks like the right rear ring is missing!
That will need further investigation and possibly a new CV joint as rings are not available separately.

From your pictures I would say your car does not have ABS, as only one wheel can be seen with a reluctor ring (pictures of front are not very helpful, as do not show the right area).

To be sure, if you open the bonnet (front) on the right is the battery, what is on the left in exaxtly the same place? If it is a block with brake pipes atached then you have ABS, if nothing you do not.

You can buy reluctor rings, but they are very difficult to fit (need heating up to bright red, so they shrink on the CV joint), but as CV joints are cheap, not worth the hassle.

I've totally taken the below sentence and run with the part about ABS and missed the "like" part. I even miss-remembered my dashboard saying ABS error when it actually has an SRS light lit. I put 2 and 2 together and got 5.

G0RSQ wrote: wrote:

Speed sensor is a sensor on one wheel, like ABS sensor which detects small variations in speed, mainly used as rough road detection, (about 50 measurements per 1 revolution of the wheel) to tell ECU to ignore odd misfire.

Sorry for the run around guys. Is the 43 tooth reluctor ring I've purchased now useless?

Edit: For anyone else that stumbles onto this thread thinking its about ABS here is a picture of what ABS sensor looks like. Credit to user: CJJ

Well I finally did my 200 miles test drive. Got to Silverstone (60 miles travelled) and the water coolant was millimetres from the red and the oil temp was at 135C.

Now in a layby thinking "are all mg Fs like this? Are they supposed to be for short Sunday drives?"

It's 15C outside but (I'm guessing) 25C in the cabin and I can't open the window or put the roof down cuz it's raining.

I hate this.