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Unknown no start possible fuel issue? Maybe purge valve Topic is solved

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BlackBrick
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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by BlackBrick » Tue Sep 11, 2018 12:38 pm

have you checked your fuel pressure while cranking?



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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by crlande » Tue Sep 11, 2018 1:28 pm

A camshaft position sensor caused those issues on my 850.



Aggnizzab
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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by Aggnizzab » Tue Sep 11, 2018 2:34 pm

BlackBrick wrote:
Tue Sep 11, 2018 12:38 pm
have you checked your fuel pressure while cranking?
No but replaced the pump same results clean tank



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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by BlackBrick » Tue Sep 11, 2018 3:48 pm

Worth checking fuel pressure so you can eliminate fuel as the issue. (You'll need an angled attachment to a fuel pressure gauge to reach that schrader valve on the side of the fuel rail.)

fuel pressure regulator stuck open? That would prevent any fuel pressure building up.



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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by Aggnizzab » Sat Sep 15, 2018 7:58 pm

BlackBrick wrote:
Tue Sep 11, 2018 12:38 pm
have you checked your fuel pressure while cranking?
Hey y'all does throttle position sensor sound right for the no start I got 02 sensor codes and a throttle position sensor code



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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by abscate » Sun Sep 16, 2018 4:39 am

Unlikely to cause a no-start


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Re: Unknown no start possible fuel issue? Maybe purge valve  Topic is solved

Post by Aggnizzab » Sun Sep 16, 2018 6:52 pm

It is the only code besides the o2 sensors it has pulled :/



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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by Aggnizzab » Sun Sep 16, 2018 8:48 pm

UPDATE THROTTLE POSITION SENSOR WAS MY ISSUE


Aggnizzab wrote:
Mon Sep 10, 2018 12:57 pm
Ok so I ran with the fuel light on for about 30 miles my fiance put gas then we got a no start condition. About 4 hours later went to the car to check it out myself and she fired right up. Then got home she refired several times no issues. Next day fires right up get to appointment about 30 minutes away stay at appointment for 2 hours then go to start... No start . Have her towed home the next day she starts but dies right away. I have check the valve on the fuel rail I have a steady clean stream, I hear my fuel pump, I feel and hear my fuel injector relay and the the pump relay I replaced the fuel pump fuse, fully charged the battery and I just keep getting the same the a start then stall out then no start. I do know I have a bad 02 sensor. And I just rebuilt the fuel pump relay harness thingy. I think purge valve maybe but don't know the proper way to check or locate it ! Any thoughts or advice is much appreciated. I am also working on a budget and a self taught mechanic lol self teaching I play mechanic



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Re: Unknown no start possible fuel issue? Maybe purge valve

Post by misha » Mon Sep 17, 2018 2:23 am

Like allready mentioned...TPS alone can't cause no start condition,but in this case...it's could be from combination of bad o2 & tps.
It seems that both of them failed...can.
On the other side...it could be that TPS failed in mid range or high range position and flooding the engine on start-up in this case...since throttle is phisically closed.
I would say that it would start with TPS connector disconnected in this case or at least...with gas pedal on the floor while cranking.


'97 850 2.5 20v /fully equipped/ Motronic 4.4 / polar white wagon
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