bad tfi or coil??

[88GT4u2nv]

trying to keep it simple. when im at a stable speed or slowly picking up speed my car has a very faint hessitation. kinda of the same feeling as a large gust of wind is hitting the front of my car. all tune up stuff has been done.

coil and tfi are stock on a 188k+ car.

 

[DW5.0L]

I'd say your well over normal range for TFI life. But as long as the car doesn't cut off or having starting troubles, yours might be functioning. Coil should be fine. Did you clean your throttlebody including the plate? Check your vacuum hoses for leaks. Whats your timing set at?

 

[Juiced88Coupe]

Have you scaned for codes?

 

[bill302]

as juiced88coup recomended check for codes, autozone does it free. plug in for test is located in engine bay on drivers side(thanks hissin50). then post results. also click on link below good info.

http://www.muscularmustangs.com/maintain.php

 

[HISSIN50]

as juiced88coup recomended check for codes, autozone does it free. plug in for test is located in engine bay on passenger side. then post results. also click on link below good info.

http://www.muscularmustangs.com/maintain.php

Driver's side on a fox.

 

[88GT4u2nv]

would a bad tfi module be caussing my hard starts. like its acting like a car with a bad cam position sensor. cranks for a long time before fireing.

 

[bill302]

test it click on link testing tfi.

http://www.onr.com/user/pbooth/mustang/tfi.html