Sputter on accelaration

[tpking]

99 Silverado 5.3 showing no check engine light. The truck starts and idles fine, but sputters on acceleration at around 2000 - 2500 rpm's. The sputtering will not stop until letting off throttle. The rpm at which it sputters seems to increase as the truck warms up. Does this in all gears including neutral and park (don't know about reverse). Thanks for any help

[j cAT]

Originally Posted by tpking

99 Silverado 5.3 showing no check engine light. The truck starts and idles fine, but sputters on acceleration at around 2000 - 2500 rpm's. The sputtering will not stop until letting off throttle. The rpm at which it sputters seems to increase as the truck warms up. Does this in all gears including neutral and park (don't know about reverse). Thanks for any help

have the pcm/computer scanned for any DTC ...


this could be a number of items..

[FrankB43015]

Mine did this, but smoothed out when it warmed up. Finally saw a code for crank sensor - not too hard a fix and has run great ever since.

[tpking]

Thanks for your input, finally got a crank sensor code to pop up.

[j cAT]

Originally Posted by tpking

Thanks for your input, finally got a crank sensor code to pop up.

the cranksensor located under the starter has had failures,,,also inspect the connector/pins for damage corrosion...

inside the engine is a metal toothed gear that could also be causing the problem,,,if the sensor is clean it is most likely the sensor..

I have found that when they go the resistance will increase,,measure and compare to new sensor...

I think 3,000 ohm area..