I just wanted to sum up my previus post.
I have a 850 wagon non turbo. It has no spark and the injectors are not firing.
I have replaced the cam sensor, crank sensor, and coil. I have checked the relay by the fan shroud all conections look good, by passed the fuel relay and the fuel pressure is good. Disconnected the maf sensor no change.
It will start rarely start and run fine but when you shut it off no injectors and spark again. The only other part is the speed sensor it has started with it disconected but hooking it back up made no difference.
Any other sudgestions would be very appreciated.

 

Can you find an ECU to borrow?

 

No I am checking on prices at junk yards its looking 130 to 165.
What is your opinion on it being the speed sensor.

 

It is possible but I thought you already changed it?

 

No I haven't changed the speed sensor. I have purchased one but then I heard that the car would run if its bad. Thats why I have been holding off puting it in the auto parts store does not take the part back after it is installed.
Another thing I was thinking I checked the main relay by the cooling fan it looks good but it still could be bad. Is there any way to check this relay.
thanks eboknight

 

If you have a wiring diagram, you can check the relay by removing it and applying power and ground to the relay coil inputs. You should be able to hear the relay operating. Either that or apply power and check it with a multimeter

 

I have swapped the ECU and nothing different. I plan to check the main relay by the fan shroud and see if I can feel any vibration.
If it is of any relevance the fuse for the car alarm is removed it was screwing up. I tried removing the alarm relay under the dash but that killed the car totaly would not even try to turn over.
Any help apreciated its been a month and running and I miss my garage.
Thanks eboknight

 

Quote from the manual:

No Initial Combustion
* Check fuel pump circuit.
* Check RPM sensor circuit.
* Check camshaft position sensor circuit.
* Check power stage circuit.
* Check MAF sensor circuit.
* Check ECT sensor circuit.
* Check fuel pressure.

See attached. I am unable to post the engine diagram due to the attachment size limit.


JPN

 

The fuel pressure is good. I checked all the fuses. Is there a certain amount of voltage that the sensors shoud get while the key is on or the car is cranking. The wire diagram just the generic version for the car, if so I should be able to get my hands on one.

I also checked the main relay for a buzz or click with the key on, nothing that I could notice seemed totally silent to me.

thanks eboknight

 

Did you unplug the relay and see if the wires are backed out?

 

Sure did I have a new main sensor should be in tomorrow new for 18.00. I also got a scanner and pulled the code p0340.
Thanks for making sure I am doting my i's and crossing my t's.
By the way your new picture is awesom....

 

Hopefully that is it.

Thank You.

 

Sure did they look perfect. I finally got a scanner and pulled a code p0340, so that points back to the cam sensor. Is there a site that breaks down codes more in depth?
I have also replaced the main relay and still the same thing.

By the way the new picture is awesome.

 

Thank You on the pic.
I could not find the exact cross over but I assume it is this code.

 

Sure did looked good. Pulled a code: p0340.
Is there a web site that will elaborate on the codes meaning I know it points to the cam sensor, but both the cam and crank sensors have been replaced.
Thanks

 

I do not know of any that goes into full detail.

 

Does this help?

http://www.polkproject.com/p_codes_c...dized_dtcs.pdf


JPN

 

Sorry I did not realize that it a had gone to a second page and I was thinking the message was not posting ( What a retard ).
I think I am going to pull and clean the sensor out and other components. Then I will check the voltage to it make sure its good.
I did swap the battery to day did not change any thing.

Thanks Thanks Thanks oops There I go again.

 

Tech what program is that you are using and can you get it for home PC,that image and break down are awesome.

JPN that link is very nice except the code that my car is showing is not listed, but it would end up between the cam and speed sensor codes.

Thanks to you both.

 

Well today I checked pulled the cam sensor off every thing looked good. I also checked the voltage to the cam and maf sensor none was present. I think I am going to look into the ignition switch next, not sure where else to go.
Thanks again for all the help.