crank sensor? problems with pic inside..

[stu3y]

my car recently showed the toxic gas light on the dash, the codes were read and it came back on the clip as " DF024 Vehicle speed sensor circuit" the cars been feeling really hard to to pull away (almost stalls) especially when going from 1st to reverse! also seems quite jerky when shifting, anyway i was told to clean the crank sensor, 1 of the bolts were loose on this, and it lookes abit bodged up... i cleaned it, tightened it back up etc reset the light, today i done around 150 miles, the car felt a hell of a lot better to drive, shifting smoothly, and easy to pull away etc... but after 100 miles the lights came back on!!!!

should the blue plug look like this? (it had a tie wrap round it for some reason.. is it the correct plug etc?)
also the wires are soldered on...

 

[MicKPM]

That's the later spec CPS but the cable tie is an optional extra and shouldn't really be there unless it's holding the plug in place due to a broken clip.

 

[stu3y]

can them later spec ones go faulty?

 

[MicKPM]

Well yes, it's a hall effect sensor so has a finite lifespan and is susceptible to degradation due to heat soak and contamination of the pickup but they're not as bad as the older ones.

 

[l0rd]

Would the newer spec tdc sensor last less than 8000 miles?

Had mine original one changed in order to resolve the jerky idle and had no difference with the newer spec but now i get the same fault

 

[mr.pink87]

Well yes, it's a hall effect sensor so has a finite lifespan and is susceptible to degradation due to heat soak and contamination of the pickup but they're not as bad as the older ones.

Are you sure that it's a hall-effect-based sensor? It has only two wires so i'd assume it's a regular inductive sensor.

 

[MicKPM]

You got me, well done

 

[scotty10]

ok ive had this crop up df024 vehicle speed sensor circuit

what should i be looking for and what does this code mean.......thanks