Oil warning light on, oil level good...what's my issue?

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unfortunately, it's hard to check the fuel pump pressure without connecting a fuel pressure gauge to the fuel system, which is tad fussy. There are threads on how to do this so it might be a good idea to study the process then connect a gauge, and then tape the gauge to the bottom of the windshield (outside). Then just drive around until it stalls, that's when the gauge will tell you things vs you having to guess. Again, the gauge hookup is a bit of a pain but the info it tells you is priceless. @cruisermatt has developed a cool adapter which makes this process MUCH simpler, and it's about to go online soonish from what I hear.

I suggest doing a systematic approach vs throwing random parts at this issue. Everyone here will throw all kinds of ideas at you to help you out, but you need data first and foremost.
 
85x said:
Id start with the easy / cheap stuff first. Fuel filter is pretty high on the cheap/easy scale. From there try running a quality injector cleaner like redline with the PEA additives and a spirited drive. If that doesn’t help then could be the pressure regulator. The fuel pump isn’t a fun job! Good luck and RTFM 👍
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Haha, thanks guys. I won't do it without the manual. I've got it downloaded and am going through it. I just like finding a good experienced thread/video with firsthand hillbilly knowledge and experience when possible.
 
Update time: Here's what I've done so far-problem persists...sort of.

I pulled the fuel pump and changed the fuel sock/filter as well as all the constituent parts (gasket, hose, etc.), fusible link, AM2 fuse, oil change, Sea Foam gas treatment, and Sea Foam throttle body cleaner.

I made two longish trips with no issues but then just yesterday almost recreated the original problem. Pulled away from a red light and when I put my foot on the gas the engine started bogging down like it wanted to die. I let go of the gas and the engine came back to life, put my foot on the gas again only to have it bog down again. When I let go of the gas pedal it came back to life again. But then I hit another red light and when I took off from that light it drove fine.

Could it be some type of fuel sensor, O2 sensor, or otherwise? Any other ideas of what I should check/replace?

It's tough because I can't always recreate the problem-it just happens here and there.
 
As for the low oil light coming on, the solution is (or at least used to be) pulling the sensor from the oil pan, bending it down just a smidge, then putting it back in. My first 80 had this issue and I did this and it worked great. and yes that was 20 odd years ago Low Oil Light - https://forum.ih8mud.com/threads/low-oil-light.24818/ hope that helps!

Good luck with the stalling issue... have you tried looking for any codes?
 
alia176 said:
unfortunately, it's hard to check the fuel pump pressure without connecting a fuel pressure gauge to the fuel system, which is tad fussy. There are threads on how to do this so it might be a good idea to study the process then connect a gauge, and then tape the gauge to the bottom of the windshield (outside). Then just drive around until it stalls, that's when the gauge will tell you things vs you having to guess. Again, the gauge hookup is a bit of a pain but the info it tells you is priceless. @cruisermatt has developed a cool adapter which makes this process MUCH simpler, and it's about to go online soonish from what I hear.

I suggest doing a systematic approach vs throwing random parts at this issue. Everyone here will throw all kinds of ideas at you to help you out, but you need data first and foremost.
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I'm quoting my own post with a pic. I too am looking into something funky with the fuel system so now I'm driving around with the pressure gauge taped to my windshield. :hillbilly:

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that's a fuel pressure gauge taped to the windshield. That's how I'm checking the fuel pump output under load while driving. Anytime I suspect fuel delivery issues, i start with this to see what's going on.
 
alia176 said:
I'm quoting my own post with a pic. I too am looking into something funky with the fuel system so now I'm driving around with the pressure gauge taped to my windshield. :hillbilly:

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This is like the vehicular equivalent to putting one of those cones on your pet after surgery. It's probably helpful in the long run, but man does it look goofy.
 
Marvelicious said:
This is like the vehicular equivalent to putting one of those cones on your pet after surgery. It's probably helpful in the long run, but man does it look goofy.
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exactly, well put! It's fugly but it gives me the data I need for troubleshooting purposes.
 
alia176 said:
that's a fuel pressure gauge taped to the windshield. That's how I'm checking the fuel pump output under load while driving. Anytime I suspect fuel delivery issues, i start with this to see what's going on.
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Understood. Was just wondering how you noticed the issue, as in what's the issue you are having and when do you notice it?
 
94toInfinity said:
Understood. Was just wondering how you noticed the issue, as in what's the issue you are having and when do you notice it?
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Thanks for clarifying.

I'm chasing a "extra long" cranking before starting condition. Which is leading to m to check if the fuel line stays pressurized after the engine is shut down. Just for warm/fuzzy, I also wanted to see how the fuel system is delivering fuel during WOT since I have a turbo.
 
alia176 said:
Thanks for clarifying.

I'm chasing a "extra long" cranking before starting condition. Which is leading to m to check if the fuel line stays pressurized after the engine is shut down. Just for warm/fuzzy, I also wanted to see how the fuel system is delivering fuel during WOT since I have a turbo.
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Ok cool, thanks for the explanation.

I don't have a cranking issue-fires up right away every time, even after it has the shut off problem. That's why I'm thinking this is a fuel issue. Maybe a vacuum issue?
 
94toInfinity said:
Ok cool, thanks for the explanation.

I don't have a cranking issue-fires up right away every time, even after it has the shut off problem. That's why I'm thinking this is a fuel issue. Maybe a vacuum issue?
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This is why i suggest doing what I did so that you can look at your fuel pressure.
 
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