My 73 Maverick has developed a small problem. When it is cold it shifts perfect. After it gets warmed up when I slow down like to stop in city driving then accelerate it starts to accelerate then when it is about to shift to 2nd is hesitates or slips for just a second. then it catches and works fine. Any ideas? Old Preacher
As long as you are sure of clean, correct ATF fluid level and type, I would suspect that the front clutch pack is showing its age. When the plates get worn slippage shows up more when warmed up than cold. You can in the short term, try an additive like LUCAS trans fix. If the fluid is at all old, I'd do a simple oil change and add a 24oz bottle. If the oil is pretty new, you can add just the LUCAS, but make sure not to overfill the case. I have had some great success with this additive - but plan on a rebuild at some point down the road. The plates do not last forever.
I have to agree with what you were told. You never mentioned how many miles are on your transmission. While C4 trannys are robust, they won't last forever. I'm also an advocate of Lucas products. None of them are snake oil. Make sure when you do the fluid change you replace the filter and gasket.
Thanks for the advice. I have 135,000 on the trans. I have another question. I bought this car in a basket and put it back together. It did not have a carburetor so I bought one at O'Reillys. I know that it is running rich. I can smell it and it only gets about 12 MPG. There is only one adjustment on the carburetor and that is an idle adjustment. Is there any way to lean down the fuel?
Which engine and which carb do you have? Unfortunately many of the off the shelf rebuilds are a "one size fits all" - which doesn't always work as you would like.
The intermediate band adj should be checked, if worn it will be out of adj. This isn't something miracles in a can will fix. If adj doesn't help, intermediate servo should be checked(on passenger side opposite of adjustment). "Special Tool" isn't necessary. After loosing locknut a couple turns, tighten adjustment till it begins to snug, back off 1¾ turns.
Great point Tom, to check the band adjustment. I'm still thinking internal clutches because it shows up when warm, but if it is as simple as the band - that would be great!
I have a 250 Cu in six cylinder. I just went to O'Reilly and told them the make and year and they handed me a carb. I guess I could look on the carb and see.
Thanks so much. I will check that as soon as it gets warm here. I have a "Click" torque wrench should I set that for 10 lbs and use it?
Did it look like this? Carter RBS came on many of the 250's Whatever carb you have - make sure the choke is fully open when warmed up. Choke left on will kill mileage and give you the rich smell.
Assuming your torque wrench is capable of 150lbs, chances it's anywhere near accurate at 10 ft lb are almost nil. A small one that 50 ft lbs is max may be OK. It isn't that critical of an adjustment. The 10 ft lbs restrains the ham fisted from drastically over tightening the adj. Small open end wrench is all that's necessary. If you note amount of turns it takes to snug adj, you'll know if it was off.
I checked the band adjustment and set it to 1 3/4 turns. It made the problem worse. It was set to only 3/4 turn. I decided to have it rebuilt.
