Popps then Shuts Off again.
- Thread starter robw13
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Now it won't idle for crap, keeps stumbling up and down then dies. New iac, dizzy and temp sensors. No codes. Maybe fuel issue? What fuel pressure is it supposed to be at?
39 psi with the vacuum disconnected from the FPR. Plug the vacuum line. Also, if the vacuum line has gas in it the FPR is fubar.
32 psi (+-) engine idle, vacuum hooked up to FPR, 40 ish psi vacuum line off FPR.
Oh, and there is always a code, if the computer does not talk to the scanner/reader then it needs checked out. Most should be checked out at this age anyway. Remember, manufacturers don't design/build stuff to last much more than 20 or so years, they don't care after that.
Oh, and there is always a code, if the computer does not talk to the scanner/reader then it needs checked out. Most should be checked out at this age anyway. Remember, manufacturers don't design/build stuff to last much more than 20 or so years, they don't care after that.
If all checks out you will get a code 11 every time. This both one KOEO and KOER. If you do not get this the General said above the ECU is most likely fubar from age and need to go to the ECU Exchange for a repair.
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So far it's talking I think, shows code 11,10,11 only 18 if the dizzy plug is taken out. Is there a way to check the ecu without opening it up?
Check the vacuum hose going to the FPR (even if you've already checked the FPR).
Check your return line and make sure it's not pinched or blocked. I would even rig up a temp return line running into a gas can to check this out.
Check your return line and make sure it's not pinched or blocked. I would even rig up a temp return line running into a gas can to check this out.
Frp line is dry when primed or running. Hooked fuel pressure gauge up, no psi on prime or running. There's fuel at the schrader valve. Codes 18 and 96 now. 18 is cause of messing with dizzy.
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Where did you hook up the fuel pressure gauge? If you did it at the Schrader valve I’m pretty sure you have to remove the stem to get one to work.
Actually did not that, the fitting screwed on just fine though. Is the stem on the valve or the guage?
It’s the stem in the schrader valve. I don’t think most pressure gauges depress it when you install them so you will never see a pressure reading. Think of them like the valve on a wheel to inflate a tire.
Remove the [valve stem core] from the valve on the fuel rail and then connect the fuel pressure gauge.
The tool used to remove the [valve stem core] is the same as the one that you use on valve stems on wheels and tires.
Any of those tools will work. So will a tiny flat-tip screw driver (in a pinch), if you're careful and don't booger up the threads.
I removed it but the fuel pressure kit doesn't have 1 that fits the slot. Rented a fuel pressure kit from oreillys
I'm not sure that kit will work but it might. I would suggest you just get a permanent pressure gauge if you are not using the schrader valve for anything else. Not cheap but its what I ran for years before going to an Autometer full sweep electric one. This particular kit does not require the removal of the internal valve which is a plus. I removed it when I installed the Autometer gauge as it is in the bag with the Kirban manual gauge.
I still have the instructions and scanned them:
I still have the instructions and scanned them:
Removed what? The stem core?
Just set it aside. Nothing goes back into the fitting until you're done.
With the valve stem core removed, attach the fuel pressure gauge and run your checks.
When you're done, re-install the valve stem core and check it for leaks.
Bosch 30A relay.
You can find them everywhere so just do a search. I use them for the fuel pump relay and WOT relay on my 93.
You can find them everywhere so just do a search. I use them for the fuel pump relay and WOT relay on my 93.
Did more testing/digging. Check codes KOEO got 10 11 18. KOER, got thru cylinder 8 before dieing, codes 21, 44, 94.
Found a big hole in the main rubber 3/4" hose to air pump. Guess thats the 44/94, but what about 21? What would be causing 18 again?
Found a big hole in the main rubber 3/4" hose to air pump. Guess thats the 44/94, but what about 21? What would be causing 18 again?
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