well truck still shiffs in and out of lockup between 50-60 and sumetimes at higher speeds but very rarely. did put a tps and all new linkages thinking maybe thay may be loose. been two dealer two times and no clue. any one have any sugestions. thanks for any help.

 

hi
a defective tps maby ?

a loose connection or broken wire ?

fluid level / wrong fluid ?

what truck do you have ?

fill in your sig for others to help easier !

 

Blue fusible link wire or connection possible. Clean and double check that, then it may be a noise issue from the Alt. Sometimes wrapping the wire from the alternator in foil and grounding will help.

Fill out your sig. so we know what we are dealing with.

 

The brake sw out of adjustment or bad can cause this , I found mine when the cruse & LO would come , especially hitting bumps in road .

 

sorry 95 25004+4.at dealer now starting all over.checked brack sw was fine. deal is ajusting tps may be off? with no wires on alt it still shifted in an out. batteys test both the same only two mounths old.

 

my truck did the same thing. the brush inside the alternator was all but gone. it was beginning to arc out on the armature during increased electrical loads, specifically at night when the headlights were on. this is the only time my problem showed up.

i took the alternator to an alternator/starter repair shop. they put it on the tester and it was putting out about 90amps. they said it wasnt bad but took it apart and found the worn brush. they replaced it in a few minutes and put it back on the tester. the alternator output shot up to OVER 130amps.

problem solved, my truck drives like its brand new.

btw, i still showed 14v at any given time. there were no outward signs that the alt was faulty. i went thru so many other steps before this with no positive results. moral of the story; INSTALL NEW BRUSH IN GENERATOR FIRST!