92 Ford F150 4.9L. starts good, idles rough most of the time, sometimes it bogs down on takeoff and has at times died at slow speeds. I have replaced the fuel pump which was only putting out 20psi. it seem to fix the problem but it came back. pump it putting out good pressure.I have checked the vac line, cleaned the iac valve, had injector clean performed. waht am i missing?
I have good fuel pressure , Idle ruff and bogs bad , cannot set the timing as it is erratic . 1994 F150 4.9 engine , Changed engine coolant sensor, Air temp ,distibuter, used tbs and idle control motor ???
4.9 litre ?? you having a laugh its a 10ton truck engine not a pick up -global warming machine,remove the pump/sender unit and check the gauze filter also look inside tank for a something floating around ,i think the idles is not a related problem to the vehicle losing power but their is a possibility you could have a problem with the little vac operated thing on the fuel injector line that allows the fuel through only when the engine is running
http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html
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Nissan Pathfinder Backfires?
http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm?
http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000
RPM?
http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.
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