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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Pontiac Technician
Category: Pontiac
Satisfied Customers: 2378
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2005 Pontiac Bonneville 3.8 Surging bad on acceleration.

Customer Question

2005 Pontiac Bonneville 3.8 Surging bad on acceleration. Changed fuel filter, plugs, wires, coils, ignition module, mass air flow sensor. No codes but did notice18X signal momentary going to zero on acceleration could this cause the surging?
Submitted: 1 month ago.
Category: Pontiac
Expert:  Ricardo Hohl replied 1 month ago.

Hi welcome to just answers my name is ***** ***** you mean the 02 sensor switching signal?

Expert:  Ricardo Hohl replied 1 month ago.

has a fuel pressure test being done on this vehicle?

Customer: replied 1 month ago.
fuel pressure at 45 at idle 55 when throttle is snapped. I mean the 18X crank signal goes to 0 rpm momentarily.
Expert:  Ricardo Hohl replied 1 month ago.

well although that's not a good sign of a crank sensor it should not cause a surge on acceleration.