problem with my 4.9 ltr-1990 f-150
01-02-2011, 06:19 PM
#1
Junior Member
Thread Starter
Join Date: Jan 2011
Location: gadsen,alabama
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
problem with my 4.9 ltr-1990 f-150
I just bought a 1990 f-150 4.9 ltr, having trouble with the motor not running right, sometimes it runs fine,but sometimes it starts running bad, it starts to chug,and skip when you take off,well it is not like when a plug is fouling out, but just rough! and also i have a vacum gauge run from the throttle body,when it starts running bad the vac drops from 20to25 down to 10-0. if you have any answers i would appreciate it....hello,brothers under the hood!!-I have got my truck fixed!!!! i took my truck to the dealer to get the codes read it come back code 41,pinpoint test to map sensor internally shorted causing system to run rich,the part cost me $40.86 and less than 30 min to fix.!!!! now the truck runs great!!
Last edited by hosmer billy; 01-06-2011 at 11:04 PM. Reason: got my truck fixed
01-03-2011, 04:59 PM
#2
Hey man cant really help you there... but i would post this question here ... https://www.f150forum.com/f10/ becouse this section dont get much traffic ... im sure they can help you out