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1995 Chevy Astro wont start cold

Tiny
ROB1972
  • MEMBER
  • 1995 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
My astro will not start first thing in the morning or when sitting a long time unless I use starting fluid, then it runs great and will restart after short stops. What is wrong?
Thursday, September 18th, 2008 AT 2:35 PM

9 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the coolant temperature sensor/fuel pump and oil pressure sending unit to include the fuel pressure.

Idle the engine find the fuel pump relay remove it-did it stalled


https://www.2carpros.com/forum/automotive_pictures/12900_oil_sending_unit_and_fuel_pump_circuit_74.gif

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Thursday, September 18th, 2008 AT 3:16 PM
Tiny
ROB1972
  • MEMBER
  • 5 POSTS
What does it mean if the engine stalls when I un plug the fuel pump relay?
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Thursday, September 18th, 2008 AT 3:54 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The fuel pump/oil pressure sending unit went Kaput-it powers the fuel pump after the engine starts up-the fuel pump relay just primes it for 2secs to get the pressure upfront then it takes over powering the pump
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Thursday, September 18th, 2008 AT 3:59 PM
Tiny
ROB1972
  • MEMBER
  • 5 POSTS
Could this keep it from starting when it's cold?
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Thursday, September 18th, 2008 AT 5:51 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure and get back with the readings.
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Thursday, September 18th, 2008 AT 6:20 PM
Tiny
ROB1972
  • MEMBER
  • 5 POSTS
My fuel prressure is 40 psi and bleeds down to about 38 and holds steady How do I know if it's the pimp or regulator?
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Saturday, September 27th, 2008 AT 10:51 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
See below fuel pump psi specs


https://www.2carpros.com/forum/automotive_pictures/12900_fuelpump_1.jpg

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Saturday, September 27th, 2008 AT 2:32 PM
Tiny
ROB1972
  • MEMBER
  • 5 POSTS
I know my pump pressure is out ofg specs, should I eplace the pump?
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Saturday, September 27th, 2008 AT 6:20 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
EFI system don't like incorrect fuel pressures-reommend replacement
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Saturday, September 27th, 2008 AT 6:22 PM

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