Help please, Whilst driving home 2 days ago the car lost power and seemed to develop a misfire.

 

It managed to get me home before completly dying and now will not start whatsoever, Engine turns over ok but will not fire into life?????????

 

The car was not hot and did not go over 40mph on this trip.

 

If anyone can suggest some starting points i would be greatful and if sensors are a poss problem please point out to me where to find them.

 

Also is it worth checking the ecu fault codes at all????

 

Cheers in advance.

:headvswal

fault code deffinitely, possible ptu fault?

Whats a ptu and are the codes via leds on the ecu?

ECU test : http://www.ttzd.com/tech/diagnostictech.html

PTU , power transister unit, sends sparks to the coil packs

 

http://www.aus300zx.com/tech/ecu_diagnotic/ECU%20Diagnostic%20Switch.htm

ok thanks i'll try that

I know it's a long shot but try and wiggle the connections on either side of the ptu and see if it starts, or pull them off and clean the corrosion, if any. That's what helped me. If not then it's probably knackered which I think would show on the ecu test.

Right guys,

 

I have done the self check on the ecu and it says fault code 11 which i think is the c.a.s??

 

Ive taken off the connector and cleaned it up (was spotless anyway) but i cant check it as the batt is dead as a dodo now so is on charge, Has anyone else got any other ideas what to check? Where is the PTU located as i cant seem to see it.

 

Also would a CAS failure result in a loss of power then a cut out or would it generally just die instantly? i would have thought that a sensor failure would just die there and then?

 

I'm gutted at the moment with it off the road and my sergeant at the nick is getting cheesed off with me swopping shifts to obtain lifts too and from work!!!!!!!

 

Help is appreciated guys and thanks very much

 

Jase.

 

 

Ps has anyone got a CAS for sale or know where i can get one? (apart from dealer)

I can tell you from experiance a CAS fault can just cut out instantly, rather like the symptoms of a faulty PTU. Mine ws just a a dirty connector so I hope yours is the same ;)

 

Vijay

PTU is on the front of the engine, on the left hand side as you look at it.

Mine was under some pipe work, and was a silver box about the size of a fag packet. Has plugs from the top and underneath. Give em a wiggle, it was the same problem I encountered too.

Cheers guys i'll go and give em a wiggle in a mo (ooer!!!!)

 

this is getting me really cheesed off as ive had the zed for nearly 2 years and this is the first problem ive had with it!!!!

Damn............still struggling with this

Trouble Code: Detected Items: Malfunction Caused By: Check::

11* Camshaft Angle Sensor circuit (CAS) Either 1° or 120° signal is not entered for the first few seconds of engine cranking.

Either 1° or 120° signal is not input often enough while the engine speed is higher then the specified RPM. Harness and connector (if harness and connector are OK, CAS might be bad)

12 Mass Air-Flow Sensor circuit (MAS) The MAS sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector (if harness and connector are OK, MAS might be bad)

13 Engine Coolant Temp. Sensor The Engine Coolant Temp. Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector

Engine Coolant Temp. Sensor

14 Speed Sensor circuit The Speed Sensor circuit is open or shorted. Harness and connector

Speed Sensor switch (reed switch)

21* Ignition signal circuit The ignition signal in the primary circuit is not entered during engine cranking or running. Harness and connector

Power Transistor Unit

26 Boost Pressure sensor (Turbo models) The boost pressure sensor is open or shorted (abnormally high or low voltage is registered). Harness and connector

Boost pressure leaks

Boost pressure sensor

31 ECU ECU calculation function is failing Replace ECU

32 EGR function EGR valve does not operate (valve spring does not lift) EGR valve

EGRC-solenoid valve

33 O2 Sensor (left side) The O2 Sensor is open or shorted (abnormally high or low voltage is registered). Harness and connector

O2 sensor

Fuel pressure

Injectors

Intake air leaks

34 Detonation Sensor circuit The detonation sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector

Detonation sensor

35 EGR Temp. Sensor The EGR Temp. Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector

EGR temp. sensor

42 Fuel Temp Sensor circuit The Fuel Temp. Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector

Fuel temp. sensor

43 Throttle Position Sensor circuit The Throttle Position Sensor circuit is open or shorted (abnormally high or low voltage is registered). Harness and connector

Throttle position sensor

45 Injector leak Fuel leaks from the injectors Injectors

51 Injector circuit The injector circuit is open Harness and connector

Injectors

53 O2 Sensor (right side) The O2 Sensor is open or shorted (abnormally high or low voltage is registered). Harness and connector

O2 sensor

Fuel pressure

Injectors

Intake air leaks

 

54

 

Signal circuit from the automatic transmission (A/T) (A/T models only)

 

The A/T communication line is open or shorted Harness and connector

ime sure the cas sends a single to the fuel pump relay as its turned so as the motors cranked check the relay is getting current to it :)

F*ck it!!!!!!!!!!!!!

 

Right this morning i have taken the PTU off and cleaned it all up and then i marked up the CAS and took that off and cleaned it all.

 

Still wont f*cking start!!! Ive re checked the ECU and code 11 is still coming up so i spose the CAS must be well and truly shagged, Battery has been off for 18 hours so ECU ma

must have been reset a treat so i am utterly gutted.

 

Can anyone help me with a replacement CAS unit at all to get to me by wednesday or thursday at all? or know where i can try?

 

Am desperate now

Cheers guys

 

Jase

i could be wrong here but i dont think a faulty cas would cause the car not to start unless it died completly get some charge in yer battery remove cas turn ignition on and turn the cas by hand see if each injector is clicking

Fraid if the CAS is dead, car will not deffo start, it sends a signal to the ecu when TDC is detected which then returns the signal for the injectors to fire.

 

To test cas, remove and slowly turn the spindle at the rear ( with ignition on) and listen for the injectors clicking, if no clicking then it's dead.

Second hand are only cheap fortunately, if you want one to try I can send you one tomorow, just send back with postage cost if when done, fraid i don't wanna sell it though, handy for a spare :)

smithy

Smithy can you msn me please mate at some point?

 

Jay12668@hotmail.co.uk

 

Cheers bud

Sorry mate, i don't that malarkey. PM is best and certainly quickest.

cheers

smithy

damn i cant send pm's

Smithy i'll ring you from the station tommorow i'm on duty 7-4pm

If it's just to take my spare CAS, just text me on 07624-490098 with yer name/address details and i'll stick it in the post for yer today on next day delivery by 1pm. Am not around much today see :)

cheers

smithy

Legend :bow:

 

At least i get a chance to see if it is the cas or not.

cheers bud