97 LeSabre Oil Pressure Gauge and Hesitation when Hot

[mmclean27]

Alright after my recent fix with the AC blower I have another couple issues to look into. Long story short I had a stalling issue awhile back and it turned out being the crankshaft position sensor.

Issue #1 A few months after that was switched out I noticed that the vehicle would start to hesitate after it had warmed up and was going either up a hill or was cruising at a slight incline. When I notice the hesitation I proceed to give it a little more gas to bring up the RPM's and the hesitation stops. Recently it seems to be a little more obvious than before so I feel it is getting worse. Its been like this for sometime now and seems to run ok as long as there is no incline or holding the gas down a bit. So thats the first issue.

Issue #2 is with my Oil Pressure Gauge. When running especially for over 30-40 minutes straight or after a long road trip I notice that when the vehicle is in Idle the oil pressure drops really far down and hovers around "0" with the little red light on. If I give gas it raises to an acceptable level as well as if I put the vehicle into park it seems to raise out of the red area. Is my oil pump going out? A relay or sensor or some sort?

Im not sure that these two issues are a product of each other but for diagnosis sake I figured I would throw them out there. I really love this car and owning it saves me a ton of cash and would like to keep it around a few more years. I have 133K on it currently. Once again thanks in advance for any help!

[Smith1000]

My 97 would dip to the red on the oil pressure gauge. Someone on this board suggested changing the oil filter and said do not use Fram. I swapped out the filter, which had not been changed for some time (it was Fram) and the oil pressure came up. I suppose you could run somewhat thicker oil to see if that helps. Not sure about the hesitation.

[mmclean27]

Thanks for the suggestion. Im up for an oil change here in a couple hundred miles and ill try the heavier oil and/or the different filter.