stumbling during turns at slow speed?
For a while now I've noticed that my '92 SSE */c kinda stumbles when I'm pulling into my driveway, for example, when the car is only moving at a few MPH and I'm making a turn. It'* never stalled, but it vibrates and feels like it'* just above the stall threshold. The SES light never turns on, and there are no stored error codes.
This car has had a rough idle (but with steady RPMs) since I bought it in '99, and it has the fuel tank problem that causes bogging/stumbling when making sharp right turns and accelerating when the fuel tank is 1/4 full or less. But I never let it get below 1/2 tank anymore because of that.
I'm wondering if maybe the stumbling during slow turns at low speeds is an indication of a weak fuel pressure regulator or weak fuel pump. These parts might be the originals, but I'm not sure.
Have any of you encountered this stumbling problem?
'99 Bonneville SLE, white, 112,000 miles
'02 Park Avenue Ultra, white diamond pearl, 88,000 miles