If you have a C4 auto, shifting points?

jzjames · Post by **jzjames** » Fri Jun 30, 2006 11:43 am

If you have a C4 automatic which is a 3 speed, at what speed does it shift form 1-2, and 2-3? I think my C4 is operating normally, but it seems to shift 1-2 at under 10 mph. Is that normal for this trans?

pat67shorty · Post by **pat67shorty** » Fri Jun 30, 2006 11:59 am

The shift ponits really depend on how the vacuum modulator is adjusted.

Most do short shift from the factory, in an attempt to improve fuel economy.

68F250 · Post by **68F250** » Fri Jun 30, 2006 5:54 pm

Sounds normal, here's the stock shift speeds:

Randy Beck · Post by **Randy Beck** » Sat Jul 01, 2006 9:50 am

Does the C4 have a shift kit in it? A shift kit builds fluid pressure quicker and at partial throttle the trans will shift at low speeds just like yours is doing.

jzjames · Post by **jzjames** » Sat Jul 01, 2006 1:59 pm

OK I didnt know that. I dont know if it ever got a shift kit before I got it. Its probably a normal C4. I keep hearing comments that they do tend to shift through a little quicker. Thanks for the feedback.

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If you have a C4 auto, shifting points?

If you have a C4 auto, shifting points?

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re: If you have a C4 auto, shifting points?

re: If you have a C4 auto, shifting points?