Car stalls no trouble codes?

1999 BUICK CENTURY
150,000 MILES • 3.5L • V6 • 2WD • AUTOMATIC
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TONEDOTTA1983
  • MEMBER
  • 1 POST
The car drives fine and just loses RPMs almost stalling. And just can happen any time. Cluster does not flicker so I don't think it's a power issue.
Aug 30, 2023 at 9:52 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Hi,

This could be a couple of things. When it stalls, does it start right back up? I ask because if needs to sit for a bit before restarting, there is a good chance the crankshaft position sensor is failing. Take a look through this link and let me know if anything mirrors what you experience:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Also, a weak fuel pump can respond this way. However, I feel it would be most noticeable when the engine is under a load. Does it seem to happen when climbing a hill or when it is under a load?

Let me know.

Joe
Aug 30, 2023 at 2:15 PM
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