Crank and wont start help ASAP!!!!! - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Brakes, Suspension, Wheels and Tires > OEM Issues

OEM Issues OEM Repairs & Problems

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  #1  
Old 07-15-2018, 10:51 AM
ThaGoalieman ThaGoalieman is offline
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2003 Chevy TrailBlazer LS
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Crank and wont start help ASAP!!!!!

Hello here is my issue I have an 03 Trailblazer 4.2 4x4 and it died on the highway yesterday. Fuel pump was deadso I replaced it and now wont start. I also replaced cam and crank sensors, ignition switch i have fuel pressure at the filter but it seems like its not getting to the injectors. I have spark it will run on starting fluid, throttle body works fine. I have taken apart the fuse box and all checks out. Tested for power at the injector harness and its all there what else could stop fuel from reaching the injectors? I'm lost and need to get it fixed asap. Thank you for any help.
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  #2  
Old 07-15-2018, 12:50 PM
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EnvoyBoy2004 EnvoyBoy2004 is offline
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Since it will run on starter fluid, you have spark and compression. And if you have fuel pressure at fuel filter, there are only two other possibilities; injectors are not getting signal to work or fuel pressure regulator is clogged or bad.
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Old 07-15-2018, 01:08 PM
ThaGoalieman ThaGoalieman is offline
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2003 Chevy TrailBlazer LS
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I'm getting signal to the injectors i checked the harness that goes to them. I was thinking maybe the regulator but never heard of one completely clogged. I'll go check now and report back.thank you
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Old 07-15-2018, 01:56 PM
ThaGoalieman ThaGoalieman is offline
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2003 Chevy TrailBlazer LS
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Got the regulator off I can't physically blow or pull air through it does that mean it's completely clogged?
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Old 07-15-2018, 04:34 PM
NJTB04 NJTB04 is offline
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Try putting vacuum to it then blow into it.
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Old 07-17-2018, 01:52 PM
ThaGoalieman ThaGoalieman is offline
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2003 Chevy TrailBlazer LS
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Still a no go i cant figure this out to save my life. Anyone have any other suggestions
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Old 07-18-2018, 07:42 AM
princej99 princej99 is offline
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Quote:
Originally Posted by ThaGoalieman View Post
Still a no go i cant figure this out to save my life. Anyone have any other suggestions
hi, I believe you should consider replacing the fuel pressure regulator.

seems to be reasonably priced.
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