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Paul Workman · 06-26-2019

If that MAP hose(s) were disconnected and now restored, I'd wanna pull and inspect the plugs. Could be some plug(s) got fouled and will run OK when they are cleaned up.

Experience is generally a good thing when troubleshooting; it can lead one to the issue sometimes immediately. But! If guessing at the solution proves not to be the case (fix), it"s back to the basics time!

FUEL PRESSURE (static) = ?
Current draw on the pump diagnostic test point (red wire about 5cm long w/ a black terminal sticking out of the large wire loom near the W/S wiper motor) when ignition key is in the OFF position [8-10 amperes is normal for both pumps running nornally].

Let us know what U find...

06-26-2019	#16
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,466	Re: Ruff Idle ,Huge Loss of Power If that MAP hose(s) were disconnected and now restored, I'd wanna pull and inspect the plugs. Could be some plug(s) got fouled and will run OK when they are cleaned up. Experience is generally a good thing when troubleshooting; it can lead one to the issue sometimes immediately. But! If guessing at the solution proves not to be the case (fix), it"s back to the basics time! FUEL PRESSURE (static) = ? Current draw on the pump diagnostic test point (red wire about 5cm long w/ a black terminal sticking out of the large wire loom near the W/S wiper motor) when ignition key is in the OFF position [8-10 amperes is normal for both pumps running nornally]. Let us know what U find...