Truck has 5

Tiny
HAMERLANER
  • MEMBER
  • 1990 CHEVROLET SILVERADO
  • 10,000 MILES
Truck has 5.7 in it I have changed dist pick- up dist modle oil pressure switch coolant senser the truck stats good but you put it in a puul and it dies it looks to be getting fuel and starts right back up
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Friday, January 4th, 2013 AT 6:33 PM

6 Replies

Tiny
JDL
  • EXPERT
How long since overall tune-up? Use a gage and check fuel pressure. Are there any applicable mil codes? You can check mil codes, yourself. You use a jumper wire between the A & B terminals at the datalink connector. Turn key just till dash lites come on, no further, the mil on the dash starts flashing, you count the flashes to get the codes. Your looking for two digit codes. Let us know what you find.
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Friday, January 4th, 2013 AT 7:09 PM
Tiny
HAMERLANER
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II failed to report new plugs wies cap rotor and fuel pump also
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Friday, January 4th, 2013 AT 7:29 PM
Tiny
HAMERLANER
  • MEMBER
All I get is code 12
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Friday, January 4th, 2013 AT 7:48 PM
Tiny
JDL
  • EXPERT
You still need to check fuel pressure. Do a cylinder compression test. Make sure the exhaust isn't clogged.
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Friday, January 4th, 2013 AT 8:08 PM
Tiny
HAMERLANER
  • MEMBER
Fuel pressure 12 pds comp 130 there is one cyl. At 120 exhaust is 3 in striat pipe it's got to be something simple would mapp senser cause any of this
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Friday, January 4th, 2013 AT 8:29 PM
Tiny
JDL
  • EXPERT
I don't know what else? A sensor problem should have set a code. I've seen instructors say about sensors, when in doubt, take it out, meaning unplugged it. The computer may default to a preset value, allowing the vehicle to run.

Unplugging sensors may be poor diagnostics, but?
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Friday, January 4th, 2013 AT 9:45 PM

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