What would cause the oil pres. to dropoil lite come on and quit going into engine after a min or two of running 1988 dodge power ram 360 just started this hittin big bump?

The sudden drop in oil pressure and the subsequent illumination of the oil pressure light after hitting a big bump in your 1988 Dodge Power Ram 360 strongly suggests damage related to the impact. Here are the most likely culprits:

* Damaged Oil Pump: The impact could have loosened or broken the oil pump, preventing it from effectively drawing oil from the pan. This is a serious issue.

* Broken or Damaged Oil Pickup Tube: The tube that draws oil from the pan up to the pump may have been bent or broken by the impact. This would also prevent the pump from getting oil.

* Loose or Damaged Oil Filter: While less likely to cause a complete stoppage, a severely damaged or loose oil filter could restrict oil flow enough to trigger the low oil pressure light.

* Punctured Oil Pan: A significant bump could have punctured the oil pan, leading to oil leakage and low pressure. Check the underside of your truck for oil leaks.

* Clogged Oil Line: While less probable after a sudden impact, a severely clogged oil line could contribute to the problem. However, a sudden impact makes this less likely than the other options.

* Sensor Failure (Less Likely): It's possible, though less likely given the other symptoms, that the oil pressure sensor itself is malfunctioning *and* that there's a coincidentally serious underlying mechanical issue. A faulty sensor would usually show gradually worsening pressure or erratic readings, not a sudden complete drop.

What to do:

1. Do NOT start the engine again. Running the engine with low oil pressure will cause catastrophic engine damage.

2. Check the oil level: Check your dipstick. Low oil level, combined with the other symptoms, strongly suggests a leak (puncture in the oil pan).

3. Inspect the underside of the vehicle: Look for oil leaks around the oil pan, oil filter, and oil lines.

4. Have it towed to a mechanic: This is not a DIY repair unless you have extensive mechanical experience. The damage is likely significant and requires professional diagnosis and repair. Ignoring this will likely result in a very expensive engine rebuild or replacement.

The fact that the problem started immediately after hitting a bump makes mechanical damage extremely probable. Get it towed to a mechanic ASAP to avoid further, irreversible damage.