× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1999 Chevrolet Astro 4.3L No Start, Poor Idle Quality, Stall
Posted to GM Driveability on 2/6/2018 19 Replies

This thing wont idle. If you give it any throttle at all it runs [...] can be kept running at even as low as 600 rpm by leaning on the throttle. No throttle, no run. Of course the first thing I did was throw an Idle Air Motor at it, no joy. No codes except...

19 Replies Received (View Replies)

  Related Documents & Media  1999 Chevrolet Astro

 
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Astro

VIN 1GCDM19W9X
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / CPI
EmissionsOBD-II Compliant
SymptomsNo Start, Poor Idle Quality, Stall
OccursIdle

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Astro

VIN 1GCDM19W9X
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / CPI
EmissionsOBD-II Compliant
SymptomsNo Start, Poor Idle Quality, Stall
OccursIdle

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)