07-12-2011, 07:01 PM | #11 |
Nothing new here
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egr stuck open? sounds like a similiar running condition that we had with the Durango.
How many miles, should you just all coil packs, wires/plugs?
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1974 Triumph TR6 1985 Monte Carlo SS 1986 Mustang GT 2011 KIA Optima GTS |
07-12-2011, 08:32 PM | #12 |
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105K
Plugs are new. There are no plug wires.
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1999 Ford F-150 Lariat |
07-21-2011, 04:32 PM | #13 |
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After going into fail safe mode I took it to a shop. They've had it 3 days and can't figure out what's going on.
Dropped the exhaust from the manifolds back and saw no improvement so they don't think the cats are at fault. The ecu hasn't thrown any new codes, but it is now missing on cyl 4. checked the coil, plug, injector, fuel pressure, wiring, cyl pressure ... good spark and fuel, cyl pressure within normal tollerances ... moved the coil, plug, injector to a different cyl and #4 is still missing. They don't know what's causing it. Throttle is not responding, but the IAC seems to be functioning as they can adjust the idle through the ecu.
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1999 Ford F-150 Lariat |
07-21-2011, 05:01 PM | #14 |
3v's are slow
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I wonder if you have some injectors going out. Can you slap some 19's out of mustang to throw in it to see if that resolves the issue?
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07-21-2011, 08:27 PM | #15 |
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Broken valve spring?
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91 GT Convertible 2006 Nissan Titan LE Crew Cab 2014 Peterbilt 337/Marion 22' box |
07-21-2011, 08:32 PM | #16 |
3v's are slow
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07-22-2011, 05:43 AM | #17 |
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just ran into similar issues with a 4.6 crown vic at the shop. i replace the crank sensor and this took the 1600 code out. after more checking it was a valve sticking . does it run better cold ?
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97 f150 lariat excab tow rig 93 mustang gt under construction |
07-22-2011, 04:06 PM | #18 |
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had a buddy with broken valve spring on a 99 gt....sounded similar to these symptoms
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07-22-2011, 04:13 PM | #19 |
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can't remember if it was qwk or italian lx but one of them had similar symptoms from a broken spring..
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91 GT Convertible 2006 Nissan Titan LE Crew Cab 2014 Peterbilt 337/Marion 22' box |
07-24-2011, 08:38 AM | #20 |
Trunk Monkey
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Italian. Have you tried a compression/leakdown test on it?
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