300 idles rough and dies if give gas
#1
300 idles rough and dies if give gas
Ok I have an 88 bronco with a 300 5spd. I know its not a truck but not much help in the 300 section. When you take off and give it gas to take off it will die, but start up soon as you hit the key. If its idling and you give it more then a 1/4 pedal its like it cuts off and if you don't let up it will die, but you let off it runs. When idling it runs rough and has a slight miss. And it smells like its running really rich. Codes said map sensor, put a known good map sensor on it and a fuel filter, new plugs still does it. Will the egr being unhooked have anything to do wioth it? Please help
#3
#4
#7
Trending Topics
#8
Before spending a dime take a look at the Fuel Pressure Regulator. Pull off the vacuum hose then inspect it for signs of fuel by smell and sight. If there is any indication of fuel that means the diaphragm is bad which allows fuel to be sucked into the intake. I would suggest to also do the same test while the engine is running. Very common problem on these trucks.
If the FPR passes this test, then it is time to invest in a gauge to check the fuel pressure.
If the FPR passes this test, then it is time to invest in a gauge to check the fuel pressure.
#10
it happened to me its the rotor button under the distributor
it happened to me its the rotor button under the distributor
do a cap and rotor change and change your ignition modual
when i did mine the rotor button was melted and it was throwing spark everywhere is why when it has a load onto it it dies cheers good luck
do a cap and rotor change and change your ignition modual
when i did mine the rotor button was melted and it was throwing spark everywhere is why when it has a load onto it it dies cheers good luck
Ok I have an 88 bronco with a 300 5spd. I know its not a truck but not much help in the 300 section. When you take off and give it gas to take off it will die, but start up soon as you hit the key. If its idling and you give it more then a 1/4 pedal its like it cuts off and if you don't let up it will die, but you let off it runs. When idling it runs rough and has a slight miss. And it smells like its running really rich. Codes said map sensor, put a known good map sensor on it and a fuel filter, new plugs still does it. Will the egr being unhooked have anything to do wioth it? Please help
Thread
Thread Starter
Forum
Replies
Last Post
Drake95
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
3
06-16-2017 10:27 AM
Bondsman Chris
Ford Inline Six, 200, 250, 4.9L / 300
1
04-10-2017 08:52 AM
ajnilson
1987 - 1996 F150 & Larger F-Series Trucks
13
10-25-2015 10:58 PM