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Old 04-30-2022, 10:50 PM
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keep the suggestions coming!

Quote:
Originally Posted by RocketyMan View Post
... your MAF is reading low in this case. I would suggest searching for a common vacuum leak of some sort. Sometimes you can tap on the MAF and if the reading jumps--it's a bad MAF.

But besides that, what have you done since? Did you inspect for any leaks? The intake boot? How about DISA gasket?
Actually,
  • 1) I did the smoke test 3x before it broke,
  • 2) then a complete MAF cleaning (with MAF cleaner, of course...also verifying that it is a genuine Siemens/VDO 5WK96132Z),
  • 3) then the carb cleaner spray-down (of all vacuum lines, intake boots, injectors & o-rings, etc., including the totally rebuilt DISA that I used the GAS kit on...with new gasket, too, recently), and
  • 4) also spraying the SAP & even the brake booster hoses (inadvertently spraying the aux water pump wiring, which triggered a weird code),
  • 5) replaced the seeping oil cap and gasket (there was an oily streak going straight back on top of the beauty cover), and
  • 6) repeatedly disconnecting and reconnecting the MAF while running, which reset my fuel trims (for awhile, at least).

All those actions occurred two weeks before I started this thread. Then there were doctor appointments, then the mysterious flat tires, then the camping trip, followed by resting for a few days. I'm ready for the next round of futility!

I agree that my MAF readings are a bit low, but I'll try tapping/wiggling the sensor and the plug, to see if it affects the idle.

And, Effduration and andrewwynn, I think both of you are correct, and I'll have to do a manual test on the fuel rail. But, will the tester kit at Harbor Freight have the correct Schrader valve adapter?
The only test kit I've read about on this forum that had the correct fitting was the OTC 5630.
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Last edited by workingonit; 05-02-2022 at 11:39 PM.
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