help a newbie

[yoldy]

hi i have w reg passat 1.8 20v turbo (apu engine).the car will start but wont rev smoothly and it wont idle,ihave to pump on the pedal to keep it running or it will cut out.it sounds verry spluttery!!!! can anyone point me in the right direction please.

[Crasher]

You need to get it to a garage for a fault code read to see what is stored. I imagine it will be a faulty coolant temperature sensor which is cheap and easy to do.

[yoldy]

thanks crasher, will do that tomorrow.i just dontwant to go to a garage completely blind!

[yoldy]

i replaced the temp control sender today,still the same!so got it scanned,1 fault,lambda sensor but the mechanic didnt think this is causing the problem,he thinks it isnt getting enough fuel?when i got it home i kept it running to get it up to normal temperature i noticed a rattling coming from the engine(top) but its only there between 3 and 4000 revs,after 4000 it dissapears,and wont rev past 5000.inoticed it seems to run a lot smoother when hot. anyone have any ideas?????????????????

[cazyp]

Well the ECU uses the lambda sensor to balance the fuel mix - so could be!

[yoldy]

the mechanic said" the lambda doesnt start working till the engine is hot" but if you say its helps to regulate fuel,would a lac of fuel cause a rattling noise between 3000 to 4000 revs?????

[Crasher]

There is more than one lambda sensor code for a 1999 APU engine

P0130 16514 Bank 1 probe 1 electrical fault in current circuit
P0131 16515 Bank 1 probe 1 voltage too low
P0132 16516 Bank 1 probe 1 voltage too high
P0133 16517 Bank 1 probe 1 signal to slow
P0134 16518 Bank 1 probe 1 no activity
P0136 16520 Bank 1 probe 2 electrical fault in circuit
P0137 16521 Bank 1 probe 2 voltage too low
P0138 16522 Bank 1 probe 2 voltage too high
P0139 16523 Bank 1 probe 2 signal too slow
P0140 16524 Bank 1, probe 1 heating element circuit, short to positive
P1105 17513 Bank 1, probe 2 heating element circuit short to positive
P1111 17519 Lambda control Bank 1 system too lean
P1112 17520 Lambda control Bank 1 system too rich
P1113 17521 Bank 1, probe 1 internal resistance too high
P1114 17522 Bank 1, probe 2 internal resistance too high
P1115 17523 Bank 1, probe 1 heating element circuit short to earth
P1116 17524 Bank 1, probe 1 heating element circuit, open circuit
P1117 17525 Bank1, probe 2 heating current circuit short to earth
P1118 17526 Bank 1, probe 2 heating element circuit open circuit
P1127 17535 Bank 1, mixture adaption (mult.) system too rich
P1128 17536 Bank 1, mixture adaption (mult.) system too lean
P1136 17544 Bank 1, mixture adaption (add.) system too lean
P1137 17545 Bank 1, mixture adaption (add.) system too rich
P1149 17557 Lambda control Bank 1 implausible control value
P1176 17584 Bank 1, Lambda correction after catalyst, control limit reached
P1198 17606 Bank 1, probe 2 heating element circuit electrical fault

Knowing which one was stored would help!

[yoldy]

thanks for all the help guys!!!ive had enough , scrapping it on monday

[Crasher]

A little extreme!

[yoldy]

im fed up running in circles!at least this way i`ll know the outcome!!!!!!!!!