Question about GMC Yukon XL

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2001 yukon shut off while driving won't start

While driving the engine cut off and I was able to get it to restart but then it died again. I checked all fuses and even put in a new fuel pump relay and fuel filter. The pump is working and delivers about 50-55 psi to the fuel rails. It sat over night and when I tried to start it if fired right up but then shortly died. This issue has also made the battery die. Any suggestions?

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Crankshaft postion sensor

see the cam sensor tells the crank sensor that the piston in cylinder 1 is all the way up and to fire the fuel and spark then the crank sensor fires the fuel and spark

Posted on Jan 14, 2013

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  • 165 Answers

It sounds like your alternator is going out

Posted on Jan 14, 2013

  • Jared Jan 15, 2013

    Tested the alternator and is fine

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6ya6ya
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Posted on Jan 02, 2017

Brian032472
  • 150 Answers

SOURCE: engine turns but won't start

No.: TSB-07-11-001
DATE: January, 2007
MODEL: 2002-07 Lancer 2.0L
SUBJECT:
HARD TO START ENGINE DTC P0340 (and P0335)

PURPOSE
The engine may be hard or impossible to start and MFI DTC P0335 and possibly P0340 may be stored due to abnormal wear to the camshaft position sensor support. Oil grooves have been added to the camshaft position sensor support to improve lubrication

Posted on Nov 04, 2008

  • 1 Answer

SOURCE: 1999 Yukon cold start problems.

1999 Yukon Start Issue - I have replaced the octopuse, battery, fuel filter, fuel pump, still having problems starting in cold weather, sometimes after a heavy rain.

Any suggestions?

Thanks

Posted on Dec 08, 2008

  • 3 Answers

SOURCE: will start then dies

On the regals they have a ceramic resistor on the passanger side under the fender. It heats up and over time it tends to brake and the wire inside tends to rust away. The fuel pumps run in 2 different speeds. Had the same problem. Dealer only part yet the car would run and you would think it was the fuel pump. Turn the key it kicks on then start and dies out. Ceramic on the pass side would need replaced. It is white about 2-3 inches long or so held on with 2 bolts i do believe. Ill find a bulliten i found online to help me diagnos the problem. :) hopefully this helps someone out instead of spendin $$$ that ya cant afford with the recession eh?

Posted on Apr 01, 2009

daves944
  • 1050 Answers

SOURCE: Buick Regal dying

You have a problem in the fuel pump relay circuit for sure then. I'm betting the relay, but it could be that dropping resistor.

Posted on May 11, 2009

  • 159 Answers

SOURCE: 2000 Jeep Grand cherokee Laredo

sounds alot the the pcm it controls the fuel pump and ign system but the anti theft would keep it from starting because the key has a transponder in it programmed for that vehicle and that would kill all ign if triggered

Posted on Sep 27, 2009

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Mass air flow , crank sensor . I wouldn't discount anything . Having a scan tool that can view engine sensor data would be a great help too , testing fuel pressure and flow and back pressure test the exhaust .
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I have a 1988 Dodge Dynasty that acts like it's vapor locking.


yes fuel pump is dying (it's old ) it will finnaly give up the ghost some day soon then engine won't run at all

common problem pump heats up and shuts off cools off and runs again cyclic

this all assumes you have kept up on changing the fuel filter at reg intervals too

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Could be the cranking amps in the battery are under par. Needing new battery. Or the alternater is not working properly.

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2001 Yukon SLT, engine will not turn over - friends think it's the alternator. Battery is 2 yrs old. My friend tried to jump start it, that did nothing, still won't stay turned on. I got the...


Hi there !

I won't say its an alternator problem because the alternator only charges the battery when its on, And it should start with the jump cables even if the battery and the alternator are bad. your Issue is not clear. Does the car start when you jump it ?

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if it shuts off while driving and will not start back up for at least 10 minutes, then it may be the crank sensor doing this. is check engine light on! if so get it scanned to find problem code. if no scanner, auto-zone will scan for free. if light is on. CPS symtoms are: car dies and won't re-start till it cools down, or won't start at all. good-day ! crank sensor timing will be out of sync. it controls timing and sends info to pcm.

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