Fixed FICM and now no clue what is wrong

[dukeyaz]

OK. Well I am going to order 1 injector and replace it this weekend. If it fixes the problem I will order 3 more and do it again....

Dad owns a repair shop so I have access to all the tools and a great place to do the work. I just don't want to buy 4 injectors ($1200+) and find out it didn't fix the issue....

 

[dukeyaz]

Sending the daughter to go pick up the parts.
1 injector and the blue fuel pressure spring kit.
Tomorrow I will supervise as she does the work.....
A few weeks back she did the front brakes.

 

[dukeyaz]

Well we got the injector installed and she idles great. Now I got a new problem....
When I get to 50+ mph and the A/T locks up in high gear I get a shudder. Like the A/T is locking and unlocking.....
Any ideas?

 

[WD40]

Yep, daughter make good helpers, the only thing she may take your truck away from you.
Doug

 

[DaveBen]

Scan it and find out what codes are stored in the PCM. Only way to work on these trucks.

Dave

 

[hulkster]

Well we got the injector installed and she idles great. Now I got a new problem....
When I get to 50+ mph and the A/T locks up in high gear I get a shudder. Like the A/T is locking and unlocking.....
Any ideas?

Sounds like torque converter clutch is stuck. put it on straight road at a steady highway speed watch the tach,tap the brake pedal see if the tach drops/ increases, good way to tell if torque converter is enguaging/dis-enguageing