Speedo wobble and flashing TC light?

[nhudson1]

FORD Focus mk3 1.6 tdci 130k miles

Random issue when driving above 60+ mph.

When the car is under load (going up a hill etc) or accelerating normal or heavy, the TC light flashes, cuts power and the speedo wobbles back and forth -/+5 mph from the true speed.

The car accelerates as normal under 60mph which makes me think its not clutch slip. 

No warning lights are on and I have no noticeable knocks or bangs coming from anywhere. 

I had the wheels rotated and new tyres on the front - the deflate assist has been set for the new pressures etc and the car had been driving normally for the last 200ish miles. 

Any thoughts or suggestions I can poke and prod this weekend?

[stevemcs]

Scan it and see what comes up, possibly something as simple as an abs sensor

[nhudson1]

I’ve also noticed a slight tick tick tick tick noise that gets faster with speed of the car. Can’t tell where from, can only hear it in the car, with windows up.

[E-bmw]

You need to get each wheel off & have a good look/poke around, it could be wheel bearings, hub nut, ABS ring broken, or similar.

You need to be particular as the issue will be visible if you look hard enough.

[nhudson1]

I'll try and plug it in tomorrow, Ive got a FORSCAN available.

Tonight the speedo died totally and on came the TPMS, TC, ABS and Warning icon.

Its booked in to be looked at on Wednesday.

[nhudson1]

I've googled all the codes -

C0037 - Rear Left wheel sensor

C003A - Rear Right wheel sensor

C0034 - Front Right wheel sensor

U0100 - lost comm to ECM/PCM

U0415 - lost comm to PCM

U100B - I cant find...


But I notice there's no FRONT LEFT error code...?

I had the rear hubs replaced at ford last year and the front left maybe 2 years ago. I was hoping it would be the front right, as thats been going nearly 130k miles.

[drdino]

nhudson1 said:

I've googled all the codes -

C0037 - Rear Left wheel sensor

C003A - Rear Right wheel sensor

C0034 - Front Right wheel sensor

U0100 - lost comm to ECM/PCM

U0415 - lost comm to PCM

U100B - I cant find...


But I notice there's no FRONT LEFT error code...?

I had the rear hubs replaced at ford last year and the front left maybe 2 years ago. I was hoping it would be the front right, as thats been going nearly 130k miles.

Looks like it's your Front Right sensor, -2B= actively failing.

[nhudson1]

drdino said:

Looks like it's your Front Right sensor, -2B= actively failing.

My dude! thanks!!

[drdino]

To confirm, clear the codes on the ABS module, do a key cycle, drive a bit and read them back if/when it happens again.

[stevieturbo]

clear the codes, get live data up for each wheel speed on a graph and drive it and see if one is not behaving.