Tgriffin91 27 Report post Posted August 16, 2015 Hi all. I have driven my cat roughly 600 miles and my car can no longer shift to reverse. It started about a day ago when I had to give it a little gas to get it to shift into gear and now it won't go at all. All the other gears appear to work. I was reading it could be vacuum issues or a sprag gear? Replaced the fluid and that didn't help. It is an automatic c4. Thanks for the help! Quote Share this post Link to post Share on other sites
Wycked69 20 Report post Posted August 16, 2015 Try the guy's on the ford transmission forum. They are usually a big help with everything Ford including C4, C6, FMX, and AOD. http://www.network54.com/Forum/260730 Quote Share this post Link to post Share on other sites
Max Power 74 Report post Posted August 17, 2015 Transmissions with pump pressure issues usually fail in reverse first, as reverse usually requires higher pressures. Your revving to engage is a tell. You might have a pump problem, but the problem is often older seals getting hard and not sealing. Sadly, the cure is usually an overhaul. Quote Share this post Link to post Share on other sites
Tgriffin91 27 Report post Posted August 17, 2015 Wycked69, Thank you for the information on the network54 site. Lots of good stuff on there. MaxPower, Unfortunately from looking up symptoms of a bad pump this looks to be my case. I just moved from Arizona to Georgia so funds are pretty tight. Is there a way to determine it is the pump other than pulling it apart? Quote Share this post Link to post Share on other sites
Max Power 74 Report post Posted August 17, 2015 Wycked69, Thank you for the information on the network54 site. Lots of good stuff on there. MaxPower, Unfortunately from looking up symptoms of a bad pump this looks to be my case. I just moved from Arizona to Georgia so funds are pretty tight. Is there a way to determine it is the pump other than pulling it apart? Well, you can hang some gauges on it and see what the pressures are, but whether it is the pump or just hardened seals, the fix is the same, so it really doesn't matter which the issue is. Unfortunately, there is rarely an easy of short cut fix for transmission issues. Some people have put aftermarket fluid conditioner, or even break fluid in the tranny in an effort to soften up the seals, but what little fix that provides is usually temporary. I wouldn't do it. Here is a primer if you feel like tackling it yourself. http://www.amazon.com/Rebuild-Modify-Automatic-Transmissions-Workbench/dp/1934709824/ref=sr_1_2?ie=UTF8&qid=1439842630&sr=8-2&keywords=ford+c4+transmission Quote Share this post Link to post Share on other sites
Tgriffin91 27 Report post Posted August 17, 2015 Hey thanks for all the bad news! But seriously thanks. I would enjoy doing it myself but moved into an apartment so don't really have space. I also don't think they would appreciate me tearing my car apart in their parking lot. Ha. Maybe I'll look at local shops for rent and try to do it there. Quote Share this post Link to post Share on other sites
Rsmach1 71 Report post Posted August 18, 2015 I found this while looking for rebuilding info for my FMX, he has one for the C4 as well. http://www.badshoeproductions.com/c4.html#c5 Has DVD'S for both early and late C4's, and a preview of them on YouTube. Quote Share this post Link to post Share on other sites
Tgriffin91 27 Report post Posted August 20, 2015 All, Thank you for the information. Unfortunately it does appear that my pump may be going bad. I did find a slight leak in the transmission cooler lines and fixed that. I am now able to shift to reverse but found the fluid level has to be a bit lower than the full line. Just have to ride it out as long as I can until I have more time and space to fix the transmission right. Quote Share this post Link to post Share on other sites
