Sputter issue when warm
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Senior User
Joined: Apr 2011
Posts: 134
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From: Texas
Sputter issue when warm
Hi guys, I figured I would post here as well just in case there is any one that watches here but not where my original thread is.
I have a 1990 f150 ext cab 300 "big six baby yeah"
short version lol. When the truck warms up it will sputter when held at a steady throttle and jerk during light acceleration. when you open it up it does not do it and when idling if it does do it i cant tell.
What I've done: replaced fuel pump, fuel pump relay, fuel filter, egr position sensor, brand new distributor all the way down, wires, plugs, vacuum lines, upper intake gasket, injectors on cylinder 1,2,5,6, as 3 and 4 looked new already, and the ignition switch. I also replaced the clutch and dropped the front fuel tank but I doubt if that has any thing to do with it lol.
I read somewhere that told me to unplug the MAP sensor and drive it like that. It stopped the sputter but it also made takeoff terrible. So thats what I was thinking to replace next.
Also I was originally chasing down code 41 but after replacing the injectors its not there anymore.
Thanks for any help yall may have.
I have a 1990 f150 ext cab 300 "big six baby yeah"
short version lol. When the truck warms up it will sputter when held at a steady throttle and jerk during light acceleration. when you open it up it does not do it and when idling if it does do it i cant tell.
What I've done: replaced fuel pump, fuel pump relay, fuel filter, egr position sensor, brand new distributor all the way down, wires, plugs, vacuum lines, upper intake gasket, injectors on cylinder 1,2,5,6, as 3 and 4 looked new already, and the ignition switch. I also replaced the clutch and dropped the front fuel tank but I doubt if that has any thing to do with it lol.
I read somewhere that told me to unplug the MAP sensor and drive it like that. It stopped the sputter but it also made takeoff terrible. So thats what I was thinking to replace next.
Also I was originally chasing down code 41 but after replacing the injectors its not there anymore.
Thanks for any help yall may have.
Thread Starter
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Senior User
Joined: Apr 2011
Posts: 134
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From: Texas
yep its coming up with code 11 system pass now days. When i first got the truck there wasent a code in the book i dident get lol jk but there was several.
Senior User
Joined: Aug 2009
Posts: 252
Likes: 0
From: Brazoria, Texas
Hi guys, I figured I would post here as well just in case there is any one that watches here but not where my original thread is.
I have a 1990 f150 ext cab 300 "big six baby yeah"
short version lol. When the truck warms up it will sputter when held at a steady throttle and jerk during light acceleration. when you open it up it does not do it and when idling if it does do it i cant tell.
What I've done: replaced fuel pump, fuel pump relay, fuel filter, egr position sensor, brand new distributor all the way down, wires, plugs, vacuum lines, upper intake gasket, injectors on cylinder 1,2,5,6, as 3 and 4 looked new already, and the ignition switch. I also replaced the clutch and dropped the front fuel tank but I doubt if that has any thing to do with it lol.
I read somewhere that told me to unplug the MAP sensor and drive it like that. It stopped the sputter but it also made takeoff terrible. So thats what I was thinking to replace next.
Also I was originally chasing down code 41 but after replacing the injectors its not there anymore.
Thanks for any help yall may have.
I have a 1990 f150 ext cab 300 "big six baby yeah"
short version lol. When the truck warms up it will sputter when held at a steady throttle and jerk during light acceleration. when you open it up it does not do it and when idling if it does do it i cant tell.
What I've done: replaced fuel pump, fuel pump relay, fuel filter, egr position sensor, brand new distributor all the way down, wires, plugs, vacuum lines, upper intake gasket, injectors on cylinder 1,2,5,6, as 3 and 4 looked new already, and the ignition switch. I also replaced the clutch and dropped the front fuel tank but I doubt if that has any thing to do with it lol.
I read somewhere that told me to unplug the MAP sensor and drive it like that. It stopped the sputter but it also made takeoff terrible. So thats what I was thinking to replace next.
Also I was originally chasing down code 41 but after replacing the injectors its not there anymore.
Thanks for any help yall may have.
https://www.ford-trucks.com/forums/1...-cruising.html
Thread Starter
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Senior User
Joined: Apr 2011
Posts: 134
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From: Texas
wow thanks for the egr info. I will test that when the wife gets home. making a restrictor plate is cheaper then replacing the map but im going to check that out too.
as for the icm checking. I bought a brand dizzy assembly that came with the module and it still ran the same. i may pull it to test as well after looking at the egr.
thanks for the info guys I will repost my results.
as for the icm checking. I bought a brand dizzy assembly that came with the module and it still ran the same. i may pull it to test as well after looking at the egr.
thanks for the info guys I will repost my results.
Senior User
Joined: Aug 2009
Posts: 252
Likes: 0
From: Brazoria, Texas
I put a restrictor plate between the intake and the egr valve and it solved my problem and my truck runs smooth now. Make sure you take the negative cable off for about 10 minutes so your computer can "relearn" the fuel settings.
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Senior User
Joined: Apr 2011
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From: Texas
I pulled the egr vacuum hose off last night and it cracked to pieces in my hand. I wasn't expecting that lol. I capped the lines on both sides just in case the exhaust pressure was enough to open the valve. I also took the negitive off for a few min so it could reset the comp for default settings till i drive it.
So far I have not had a chance to drive it far but when i went to the store it did not seem to do the sputtering thing.
I will post more soon after i have a chance to drive it.
So far I have not had a chance to drive it far but when i went to the store it did not seem to do the sputtering thing.
I will post more soon after i have a chance to drive it.
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Thread Starter
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Senior User
Joined: Apr 2011
Posts: 134
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From: Texas
omg it worked.
all i did was unplug the egr hose for now and cap the lines and the sputter or surge if thats what its called is GONE!!!
It runs like a dream that is freakin cool. I'm going to make a restrictive plate like the other guys said on that thread posted. I appreciate it soo much thanks.
AWESOME!!!
all i did was unplug the egr hose for now and cap the lines and the sputter or surge if thats what its called is GONE!!!
It runs like a dream that is freakin cool. I'm going to make a restrictive plate like the other guys said on that thread posted. I appreciate it soo much thanks.
AWESOME!!!
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