Thread: 2002 defender cps issue

Yes, at the moment……I’ll check at first try this morning to check if the rpm,s hit the required level…..with jumpers from bat to starter ..I’m asuming that all tachometer /speed etc comes from the cps

OK, I am far from being a guru on this, there are folks here that are.

That said, I have some experience with this issue. In your first post you mentioned checking two CP sensors with a DMM, with similar ohms. Do you remember what the readings were? IIRC they should be upwards of 200Ω, but not zero or OL.
When you repaired the "twitch" did you remove the CPS from its location?
When you turn the key to "ON" does the MIL perform its self test and then go out? Does it come back on when you try and start?
My memory of this is that the MIL will illuminate if there is any fault with the CPS other than the air gap, which is why I ask if you removed it. They are reasonably sensitive to excessive air gap.
I can see why you suspect the CPS, given your problems seem to start when you ****ed with it, but it could be coincidence, or it could be you disturbed something else while you were at it. As mentioned, TD5s are simple beasts, but they are quite sensitive to low voltage, and that's where I'd be looking now. The voltages you mention seem totally inadequate. I take it you have no other vehicle or jump pack to try a jump? When you were near the CPS is it possible you disturbed the wires to the starter? A loose batt terminal there could cause sufficient voltage drop to create issues.
Not a very coherent post from me, I'm just throwing ideas.

Originally Posted by Tins

OK, I am far from being a guru on this, there are folks here that are.

That said, I have some experience with this issue. In your first post you mentioned checking two CP sensors with a DMM, with similar ohms. Do you remember what the readings were? IIRC they should be upwards of 200Ω, but not zero or OL.
When you repaired the "twitch" did you remove the CPS from its location?
When you turn the key to "ON" does the MIL perform its self test and then go out? Does it come back on when you try and start?
My memory of this is that the MIL will illuminate if there is any fault with the CPS other than the air gap, which is why I ask if you removed it. They are reasonably sensitive to excessive air gap.
I can see why you suspect the CPS, given your problems seem to start when you ****ed with it, but it could be coincidence, or it could be you disturbed something else while you were at it. As mentioned, TD5s are simple beasts, but they are quite sensitive to low voltage, and that's where I'd be looking now. The voltages you mention seem totally inadequate. I take it you have no other vehicle or jump pack to try a jump? When you were near the CPS is it possible you disturbed the wires to the starter? A loose batt terminal there could cause sufficient voltage drop to create issues.
Not a very coherent post from me, I'm just throwing ideas.

Started first up thismorning…..I used jumpers between bat and starter [3c outside] 3 turns…
Now I cut back that epoxy shrink wrap and there was contact between a strand of cpu wire and the shielding …and posibly picked up and soldered in by me…cleaned that up.

Alts putting out 14.7 at idle and at about 2400 rpm…..voltage on nano dosent drop on cranking
..guess now’s time to check the alt in car under load and posibly the starter..
Just to make Shure ..
Thanks everyone , there contancerous things…a few little things and they run like **** lol…fix them and there a different car
Cheers mark and god bless mr nanocom lol