
1991 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Dies at idle
Vehicle came in with erratic idle & dies at idle. Found system running lean. block learn 138 , integrator 128 - o2 tests ok . Tps reading was 11% . All-Data said tps reading at idle should be zero.I replaced TPS for this & new one reads 12% so I am assuming th...
Summary posted 2/4/2006
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VIN | 1GBDM19Z1M |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | FI / TBI |
Symptoms | Poor Idle Quality, Hesitation, Dies at Idle |
Occurs | Cold, During Warm Up |
Trouble Codes
33 | map sensor history code |
Message Closed w/Summary
Vehicle Data
1991 Chevrolet Astro
VIN | 1GBDM19Z1M |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | FI / TBI |
Symptoms | Poor Idle Quality, Hesitation, Dies at Idle |
Occurs | Cold, During Warm Up |
Trouble Codes
33 | map sensor history code |