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Discussion Starter · #1 ·
ok i have been told that a ford 4.9 (300 straight 6cyl ) will pull a house down, lots ot pulling power: this is what i have heard from a lot of true blue oval owners say and even that forigen vechile owners say ( chevy people ),, that the ford 6 cyl has house pulling power and torque,, i have replaced my clutch once already. but it still has no balls while towing something in reverse, meaning when ever i am hooked up to either my boat ( about 2g`s in weight ) or my camper ( 5,500# ) when i put it in reverse i lose all torque in motor for pushing it. but towing it forwards i have no problem what so ever..
now it has a brand new clutch and pressure plate, release bearing, pilot bearing and clutch, master cyl. hydraulic line to centrific slave cly. ( has no mechanical linkage )..
and was told that my catalic converters can be clogged,.
taking a chance and replacing them tommorow. and was also told that since i didnt have flywheel resurfaced ( looked in good shape ) didnt think it needed resurfaced,, that that can cause my no power in reverse and causing me to smoke the clutch in reverse while trying to back up ..
this is in a 1989 fullsize broncoxlt with about 92-93,000 actule miles with a 5 spd tranny,,
now i know a 6cly doesnt compare to a 8cly but for total spent on purchase and new shocks on all 4 corners along with new brakes all the way around along with caipers, rubber brake lines and wheel cyl total spent was less then 1,500 and truck has excelent intior and needs only 4 holes patched,, and i add a bottle of berryman injector cleaner with every oil change.. every 3,500 miles tune ups every 6,500 miles
any help will be greatly appercited,, thnx blackbroncoxlt
 

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Yep, thinking the same thing about the hydraulic "surge" brakes.
There should be an "override" lever to engage in order to back up.
Dad blew up a C6 years ago trying to back our boat into it's parking spot, up a hill.
Once we found out how to override the brakes, there was no problem.
This particular trailer had a lever you pulled up, and put a 2"X2" underneath it to disengage the brakes.
 

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I would have to say BP and WD are in the know. The ONLY other thing I can possibly imagine is the fact that the 1st gear forward and reverse gear I'm sure are numerically different. If the reverse is numerically lower, you will have less power, but there should not be too noticeable of a difference, so, see comments above.
 

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my 89 f-150 that i just sold was a in-line 6 with a 5spd and there was not much difference in 1st/rev. backed my bass boat fine
it didnt have the hydrolic brakes bp and wd are talking about
 
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Discussion Starter · #7 ·
Re: what is this reverse override

what is the reverse override you are talking about? no offence but that sounds like something a chevy owner would say
 
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Discussion Starter · #8 ·
Re: no hydralic brakes

no brakes what so wever on boat tralor and electric brakes on camper trailor
 

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Reverse override

It should be on all "surge" type trailer brakes.
Those are the one's that operate mechanically vs. electrically.
When you hit the brakes going down the road, there's a hydraulic system that will sense that, and apply the trailer brakes.
In a nutshell, as the trailer trys to "push" the braking vehicle, the coupling will slide forward towards the vehicle and the trailer brakes will engage.
If you try to back a trailer equipped with "surge" brakes up a hill, or even on flat ground,
it will push the trailer into the vehicle causing the brakes to engage.
That's the situation that the override will eliminate.


However, you also posted those type brakes are not on either trailer.

Maybe TheJuice made a good point about the gear ratios.
Reverse should be low enough though.
 

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Let\'s step back a moment...

You said you replaced the clutch, so obviously you have a manual transmission - what exactly happens when you notice this "lack of power in reverse"????? Does the engine rev up, but the truck & trailer don't move? Does the engine stall? Does the engine lug down, but neither stall NOR move the trailer? Or does the engine rev up & move the trailer but not very fast? Be very specific and thorough in you description.
 
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Discussion Starter · #11 ·
Re: Let\'s step back a moment...

it will either lug the engine down till it stalls or it will sit there and smoke the clutch and move the trailor very slowly.. seems like the only time the trailor moves in reverse is when the clutch is smoking. ( and i know what some of you might be thinking,, i cant drive a stick lol) but it is not just me that cant move trailors in reverse. i had my brother try ( whom drives truck for a living ) and my neighbor who has never owned any thing but a standard tranny in all his vechiles.
not i have gotten two other possibles from people around here. one being that since i didnt resurface the flywheel that that can cause it-- but wouldnt that lead to slipping in forward gears also? i would think.. and second that i have some thing binding up in the tranny in reverse.. i could see that if it did it all the time.. not just when i am hooked up to either the boat or camper trailor...
am thinking about just pulling the 6cyl and 5spd and dropping in a 8cyl and 5spd if i can find one that year
 

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Smokin\'

Well, if it can smoke the clutch, it's NOT an engine problem. It's definitely a problem in the driveline, but I couldn't guess where since it only does it when hooked to a trailer. Try trailers of varying weights and see JUST how much of a load in reverse it takes to cause the problem. OR, check the operating rod from the slave cylinder to the clutch fork and make sure it's not jamming, holding the clutch halfway. Now that I think about it, it could be the fork on the backside of the throwout bearing instead of having it under the retainer spring... I'm starting to wonder what's going on inside that bellhousing. How's the clutch pedal freeplay??????
 

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Re: Smokin\'

Steve,

You misssed the part of it being hydrolic. No fork, no adjustment.

This type of clutch when the hydrolics go bad you will start to grind first and third. I take it no grinding?

Not refacing the flywheel would not cause a reverse only problem. No way possible.

might just be that you are riding the clutch in reverse more than you need to. Might feel like less power because having to go so easy while backing up a trailer.
 
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Discussion Starter · #16 ·
Re: Smokin\'

well when i replaced the clutch it engauged about 1" off the floor,. but since i smoked the clutch again it enguages almot at top of travel. dont have to worry about the fork on wrong side of release bearing. since this is an all hydraulic clutch, no mechanical linkage
 

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Re: Smokin\'

maybe your rear brakes are sticking? mine work way better in reverse and lots of time if i leave my e-brake on and drive forward i cant feel it, but if i back up i can hardly move. could be a frozen e-brake cable or who knows, drum brakes suck anyway
 
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