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Chris (aka- Moose)
Chris (aka- Moose), Technician
Category: Lincoln
Satisfied Customers: 47621
Experience:  16 years experience with Lincoln
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What causes what feels like an egine miiss at 40-50 mph..

Customer Question

What causes what feels like an egine miiss at 40-50 mph.. Engine diagnose finds no problem
Submitted: 11 months ago.
Category: Lincoln
Expert:  david craig replied 11 months ago.

Hi Im David. when you are cruising at that speed the vehicle should be in overdrive. when the vehicle starts shuddering and it feel like a misfire, it could be the torque converter clutch not locking up. Next time you are on the highway, and starting up a grade or small hill, tap the brake pedal with your left foot. the vehicle should automatically downshift. if not the the tcc will need to be looked at. have you checked the transmission fluid . check the level and the color. and the smell. it should be a nice red colr and have no burnt smell.

Customer: replied 11 months ago.
David, Thanks for your answer, butIn or out of overdrive - no difference. Carl
Expert:  david craig replied 11 months ago.

Have you looked at the fluid?

Customer: replied 11 months ago.
Looks and smells good but is due for a svc. Shows OK on scanner. Will have changed next Wed. Thanks. Carl
Expert:  david craig replied 11 months ago.

you might want to take it for a ride with the scan tool hooked up and monitor some of the parameters when it starts doing it. its always possible for a random misfire of a component under load and heat if its on its way out. but if it goes away when under that speed the computer wont set a code unless its a hard fault.

Expert:  david craig replied 11 months ago.

you can freeze frame the data when its happening then look at the frozen data when you get back.

Expert:  david craig replied 11 months ago.

Please rate my service if you are satisfied,as its the only way I get credit for my assistance. Thank you ...Have good one.

Expert:  david craig replied 11 months ago.

any chance you had a chance to do that?

Expert:  david craig replied 11 months ago.

do you still require assistance?

Expert:  david craig replied 11 months ago.

hello???????

Expert:  Chris (aka- Moose) replied 11 months ago.

Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.

The previous tech has opted out, would you like me to try and help with this possible ignition coil or converter clutch issue?

This is my 1st answer, but does not have to be my only answer. You the website and myself expect you to have a great experience with my help. Please let me know if you are pleased by selecting a star rating above or by replying and saying your pleased. Not rating or rating 1-2 stars does not benefit you nor me in any way. Follow up and reply as often and when needed, there is no extra charge to do so.

Thanks Moose.

Expert:  Chris (aka- Moose) replied 11 months ago.

Hello again Chris here,

  • I am following up with you to see if you got everything you needed from my answer. We're you pleased with my help?
  • If you were not pleased with my help, please let me know by replying so I can help more.
  • This post is coming up on the 7 day mark where it times out. When a post times out, that means it's no longer on my active list (you reply and I may never know it.)

Thanks Chris