Loosing power

[stusainte]

Hey Everyone : Need some help!! I have a 95 Bronco 302 5.0 tbi auto trani 4" roughcountry lift 33x15x10.5 allterrains I have a 154, on eng. what the problem is is loosing power on hills and even flat roads have to punch it to keep it moving and get up to speed getting to be a pain in the A$%$@^^! having to punch the gas (love the sound from duell exaust but ) anyone have an idea or maybe a fix Thanks Saint

 

[Roadkill]

A lot of things can cause your power loss. Could be you simply need a tune up? Check the easy stuff first.

Pull of your distributor cap and check the cap and rotor for corosion or burned contacts. Also check for dry rotted, melted spark plug wires. Pull the plugs and check for proper gap and that they are not fouled.

Some other things to look for: clogged air filter, underinflated tires. Speaking of which, are the 33's a recent upgrade? 33's shouldn't make a major difference but when going to a larger than stock tire, you will lose some power if you dont re-gear.

These are just a few easy things to check. Also, check to see if the computer is displaying any trouble codes.

 

[stusainte]

Thanks Roadkill for the info had recient tunup new plugs,wires,cap and rotor, k+n air filter,oil change,radiator flush . did the same with stock tires added new exust flowmaster withdual out , thinking maybe engine getting tired going to recheck plugs,cap,rotor, maybe injectors ???? Thanks again Stu

 

[stusainte]

I'm still stumped with this everything checks out plugs,cap,rotor air in tires,computer not showing any errors. even put in new fuel pump If anyone has had same type of problem Please let me know Thanks everyone

95Bronco 302 5.0 auto trans 4" roughcountry lift/w4"springs

33x15x10.5 allterrains flowmaster duell exaust lund visor

 

[Yardape]

You have tires on the truck that are 5 inches larger than stock, if you want your truck to behave like stock then you will need a gear change, or switch back to the massive stock 28 inch tire. You should have 4.11's for that tire combo

 

[stusainte]

Thanks Yardape : Ill check into 4.11s also had the same problem with stock tires and is about the same with the 33s checked the throttle cable and linkage maybe time for new throttle body Thanks Again ( I guess prossesof elimination)

 

[swampthing]

is it just flat out losing power? spitting sputtering?...my brothers bronco was losing power rapidly and he changed the distributor (pick up inside went bad) and that fixed it...also i had a bad problem with mine when it got hot it would spit and sputter real bad i changed module and distributor and cured it

 

[Yardape]

Another thing you can look at. The part on the throttle body that the cable hooks to, on mine it was stucking wide open. Kinda sucked cause I was in the bush when it started doing it. I unhooked the cable and turned this bracket a few times to see why it was sticking, I noticed it was bent and that I wasnt getting full throttle. There is a small rivet type thing sticking out the bottom and it was catching on the throttle body, I bent the bracket up so that it wouldnt catch anymore any I had a fair amount of power increase. I too have 33's and lack of power is something you cant get away from. Have a look though maybe yours is doing the same as mine was. I did it to a friends 86 with 36's and he said the difference was night and day.

 

[stusainte]

Hey No no sputter or spitting Its like there is no pledal until you kick in the secondarys changed the cap and rotor ,wires air filter, fuel pump, fuel filter, sprayed down the throttle linkage I think everything but new throttle body

 

[Stubby1971]

it was the trans on mine- we checked or replaced everything- highway driving or around town was great, as soon as we got off road or we would go up hill she just acted like she was tired- it even got to the point I couldn't tow a trailer- this was on my stock 94 with 31" MT's- torque conv an trans- we're of to the races again

 

[stusainte]

it was the trans on mine- we checked or replaced everything- highway driving or around town was great, as soon as we got off road or we would go up hill she just acted like she was tired- it even got to the point I couldn't tow a trailer- this was on my stock 94 with 31" MT's- torque conv an trans- we're of to the races again

Thanks stubby Ill check into the trans Mine runs good offroad just feels like theres no thottle respons

 

[MasterBiss]

mine does the exact same thing stusainte. Mines all 100% stock '95 302 and it happens mostly going uphill, but has happened on flat road. like you said, its like you really have to punch it and downshift it for it to kick in and go... its not a sputter or a misfire, but i don't know what it is either. i thought the first few times it happened that i was running out of gas (cuz the damn gas gage doesnt work)