Still cutting out at traffic lights

[JimmyJaffa]

Hi, i put a second hand crank sensor onto my 2.7 and it has stopped the error code 47. But I'm still getting error code 18 and once i have had error code 22 which is all to do with (Fuel quantity adjuster/position sensor - malfunction).can anyone tell me if this is inside the pump or on the side of the pump, many thanks, Jim.:nenau

P.S this causes jurking when cold and itermittent cutting out at lights when hot

 

[Timbo_1975]

Postion sensor and quantity adjuster are under the top cover on the pump.

 

[JimmyJaffa]

Thanks timbo, do you think i might be able to sort it without taking pump off all together?:thumbs

 

[clivvy]

funny, I got code 18 AFTER replacing my CKP sensor with a brand new one. I didnt get any cut outs, but then I replaced the No1 Injector and that code cleared, and has not come back. It may be a rogue code...

 

[Timbo_1975]

Thanks timbo, do you think i might be able to sort it without taking pump off all together?:thumbs

Sorry, the pump will have to come off entirely. Setting up the 'stepper motor' is really a job for a pump specialist.

 

[JimmyJaffa]

Cheers for that, now does anyone have a manual to removing the pump?:banghead

 

[rayf3262]

Cheers for that, now does anyone have a manual to removing the pump?:banghead

Before you jump in and pull the pump; take note of clivvys No 1 injector woes.

 

[jims-terrano]

Have you been fitting BRAND NEW CKP Sensors or second hand? I wouldn't advise second hand sensors.

Jim

 

[JimmyJaffa]

Is there a method of testing the no1 injector? (I mean the signal part.)

 

[clivvy]

no method of testing as far as I know, its just a normal injector with a plug on the end. On mine, the needle was caked black and brown and I do wonder if this poor running caused the ECU to think there was another fault (18) when there wasnt. As for the CKP, I agree with Jim, we have both had this issue, except I tried 2 used ones that had had come from working vehicles and they just arent good enough, you need brand new because this cutting out is almost certainly caused by the ckp, even though you arent getting the code (my codes came and went, but the problem was still there)

Best advice I can give-new CKP and new No1 injector. I suppose you could try just removing the injector and taking a look, clean the plug as well, see if that helps?

 

[rayf3262]

Is there a method of testing the no1 injector? (I mean the signal part.)

Not unless you have access to a half decent oscilloscope..

 

[JimmyJaffa]

Just been digging around the site on previous posts and someone said to check the resistance of the injector and to expect around 105 ohms. Well guess what I have zip,0,ziltch,ofl on meter so my injectorb sensor is open circuit, looks like it may be this. Also could someone explain what this sensor does just so I can understand, many thanks Jim

 

[rayf3262]

Just been digging around the site on previous posts and someone said to check the resistance of the injector and to expect around 105 ohms. Well guess what I have zip,0,ziltch,ofl on meter so my injectorb sensor is open circuit, looks like it may be this. Also could someone explain what this sensor does just so I can understand, many thanks Jim

Its full title is "Needle Lift Sensor" which is exactly what it does; when the pump shoots fuel into No1 inj. the ECM expects confirmation of that fact by a pulse back from the sensor. If it does not get it it will probably revert to a stock fuelling map which will not be ideal.

 

[clivvy]

be about £180-£200 for one from Nissan, personally, id go new. When I fitted mine, it was like a new car compared to before.

 

[Timbo_1975]

The point of the NLS is for the ECU to correct actual injection timing by comparing actual injection commencement with desired.

It then re-adjusts the spill control valve in the pump to achieve the desired timing - it's a closed loop system.

If the no.1 inj. signal vanishes, it reverts to fixed timing advance which is pretty retarded, and the real life implication of this will be reduced performance and (especially when cold) a lack of combustion rattle that the TDI usually exhibits.

Failing to hold an idle when coming to a standstill is most likely a problem with the stepper motor sticking, as when over 1500rpm + idle switch closed + coolant temp 50degC+ the ecu drives the stepper to the no-fuel position.

I wouldnt pull the pump to bits until you have exhausted all other causes though.

 

[clivvy]

i think that plus CKP will certainly cause stalling, its exactly the issue I had unfortunatley, CKP also sends a timing signal of some sort to the ecu, Im not too technical but its what I read when I had this issue.

 

[Timbo_1975]

Agreed.

 

[JimmyJaffa]

Well at the mo I'm happy that the crank sensor is ok as the readings from it are just under .5v and that i have not had the mil come back on with this code (47).I did find open circuit on lift injector so I've gone and ordered one from S & S diesel specialists of Southampton (Chris 01489 893834) £125 inc vat and p+p. Do have to say Chris is a nice bloke and easy to deal with highly recommended. any way will let everyone know what the results are after fitting should be Friday. Many thanks to everyone for there input, fingers crossed.:clap:clap:clap:bow:bow:bow

 

[clivvy]

Well at the mo I'm happy that the crank sensor is ok as the readings from it are just under .5v and that i have not had the mil come back on with this code (47).I did find open circuit on lift injector so I've gone and ordered one from S & S diesel specialists of Southampton (Chris 01489 893834) £125 inc vat and p+p. Do have to say Chris is a nice bloke and easy to deal with highly recommended. any way will let everyone know what the results are after fitting should be Friday. Many thanks to everyone for there input, fingers crossed.:clap:clap:clap:bow:bow:bow

yep, got mine from S&S too, really nice bunch, very professional and understanding. fingers crossed for you!

 

[JimmyJaffa]

Well finally got my injector, Stripped all down, made my own socket with grinder and 22mm deep socket. fitted new injector, put all back together feeling happy that every thing was straight forward. started the engine and guess what, no f ing difference :doh :doh. tested resistance across injector and found no reading. is it me or am i just missing something. Am i right in thinking that you place the multimeter across the terminals of the injector plug and hope you get about 105 ohms. Did the same with my mates lift injector on his rover and got 107 ohms. :nenau:nenau