View Full Version : need help with c4
stroker408
02-19-2011, 04:22 PM
i have a c4 with trans brake it has rev.but no 123 wen hot.but when you first start it up it works.has good presure
bangingears
02-19-2011, 04:30 PM
it cant have good pressure if it has no 1-2-3. Just guessing........ I would say there is a leak in the forward clutch. Reverse has a boost valve and produces much more pressure then any forward gear. So normally it might have 300 psi in reverse, with a 150 psi leak you still have 150 working psi. In forward if you have a 180 psi, and have a 150 psi leak, well you only have 30psi of working pressure. I dont think it really matters much, it would need pulled and gone through. If it truely does have good pressure, then it might have flipped the beville spring in the forward smoking the clutches
Dirtyd0g
02-19-2011, 04:31 PM
When cold evenreally bad clutches can work, the problem is definately forward clutch related.
Alan
stroker408
02-19-2011, 04:38 PM
i just put a new foward hub in it and its working psi 225 in all gears
bangingears
02-19-2011, 06:47 PM
i just put a new foward hub in it and its working psi 225 in all gears
you never said it was just apart..... probably didnt get the hub all the way down and missed the last clutch or something. So you had it apart and didnt rebuild or touch anything else, huh????? why did it need a new hub? I have a feeling there is more to your story.
03z06vette
02-19-2011, 09:40 PM
Always air test a trans when its on the bench........
bbfstanger
02-19-2011, 10:12 PM
thats what i was thinking,did you air ck it?
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