the vac lines and system are very difficult to get to, plus I have to work outside, so it had been very slow working on it, depends on weather;

using the SunPro scan tool; my mistake on earlier post; codes are 171, 174; changed the elbow under t-body; but didn't help; ( a friend at work had same thing on his 99, it fixed his problem;) took it easy on my driving for a few days, shifting to neutral every time I stopped; finally got enough...

thanks, appreciate all the help I can get; really enjoy doing my own repair work, like knowing how it all fits together and works; again thanks for the reply;

my 1998 F-150, with 4.2 V6 has these codes from time to time; they always seem to come on when slowing to stop; have researched these codes and know what all will turn the check engine lite on; but I can't seem to find out what it actually is; I live in one of the counties where my vehicle has...

my 1998 F-150, with 4.2 V6 has these codes from time to time; they always seem to come on when slowing to stop; have researched these codes and know what all will turn the check engine lite on; but I can't seem to find out what it actually is; I live in one of the counties where my vehicle has...