I own several astro cargo vans. Parts swapping is not a problem. No money limits. Problem is 96 4.3l vortec astro cargo van will not start if outside temp. is below 60 degrees F.
New mutilport fuel injected spider and almost every other part has been swapped. What controls the fuel injectors when cold? Yes spark is good at each cylinder. Fuel pressure 63 solid and holds. Fuel injector is being strobed by PCU. Vans runs good when outside temp. is over 60.. Will not start under 60. Coolant temp. switch is not it. Not the crank sensor or cam sensor. Plugs and wires switched twice. Battery is not a problem. Please help.
Starting issue
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Re: Starting issue
There are 2 coolant sensors. There is one for the dash gauge and one for the ECM. Maybe the one for the ECM is bad. Once the van has been started and is warm does it start fine?
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
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- I have my van tatooed on my cheeks
- Posts: 3119
- Joined: Fri Aug 08, 2008 12:55 pm
- Location: The Pacific North Wet
- Has thanked: 47 times
- Been thanked: 25 times
Re: Starting issue
Where are the sensors located, LIfted?LiftedAWDAstro wrote:There are 2 coolant sensors. There is one for the dash gauge and one for the ECM
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- I have my van tatooed on my cheeks
- Posts: 4379
- Joined: Sat Sep 09, 2006 3:35 pm
- Location: New Haven, NY
Re: Starting issue
There is one in the thermostat housing and the other is on the head or intake I think. I will have to get my service manual out to verify.
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
-
- I have my van tatooed on my cheeks
- Posts: 3119
- Joined: Fri Aug 08, 2008 12:55 pm
- Location: The Pacific North Wet
- Has thanked: 47 times
- Been thanked: 25 times