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Author
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Topic: 89 bronco 5.0 runs funny
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SlowStockFox
Stock Fox
Member # 1081
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posted
 
 
ok so i got a 89 bronco. i just installed the motor and i got a few small things still wrong with it and need help.
probs.
its like surges on strat up and almost dies
it runs better once it warms up
when the truck is on the radio is all static but if its off its sounds fine.
it lacks power alot
timeing is at 12' deg and plugs and wires are all good.
the motor is new and has less than 200 miles.
any ideas would help me alot. ive been threw it over and over with no luck.
maybe its like vacume or smog??? ground strap???
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i walk around....dont drink and drive
Posts: 2957 | From: cali | Registered: Mar 2002
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SlowStockFox
Stock Fox
Member # 1081
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posted
also i didnt replace o rings for the injectors. car sat for about a year or so b4 i had it rebuilt. it is speed den. it was just rebuilt to stock.
any ideas?
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i walk around....dont drink and drive
Posts: 2957 | From: cali | Registered: Mar 2002
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BlueOvalRacing
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Member # 1531
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posted
Check for vacuum leaks. Look behind the throttle body, there are 2 vacuum lines there that get overlooked. Are you sure you had the spout connector out when setting the timing? Is there a capacitor on the alternator wiring? If not, that would cause some RFI interference.
Also, make sure that the ground wires are connected on the rear of the intake manifold and rear of the cylinder head(s). They are the O2 sensor grounds and can cause grief.
Posts: 1159 | From: Pioneer | Registered: Jul 2002
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SlowStockFox
Stock Fox
Member # 1081
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posted
i got all the vac lines hooked up. will double check the tb ones. the ground on the rear of the intake man i will dbl check. the one to the rear of the heads is one. what is the thing for the alt????
what is the base timing for it.... if its not diff from a mustang 5.0
if i check the vacume on it with a gauge what should it read? thanks
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i walk around....dont drink and drive
Posts: 2957 | From: cali | Registered: Mar 2002
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SlowStockFox
Stock Fox
Member # 1081
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posted
also there is no check engine light on. do you think it could be like a cracked vac.....like the cheap ones ford uses on the older cars. the truck also wont rev past like 4 to 4.5k and makes like no power.
any other ideas guys??? please thanks
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i walk around....dont drink and drive
Posts: 2957 | From: cali | Registered: Mar 2002
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BlueOvalRacing
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Member # 1531
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posted
The vacuum should be 16+" at idle. The timing is 10 degrees just like a Mustang. The capacitor looks just like one from an old points type distributor. It would be mounted to the back/top of the alt. or on the fenderwell, I can't remember.
The lack of power could be a shitload of different things, plugged fuel or air filter, plugged cats, wrong timing, etc. Go over the basics first.
Posts: 1159 | From: Pioneer | Registered: Jul 2002
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SlowStockFox
Stock Fox
Member # 1081
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posted
ttt
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i walk around....dont drink and drive
Posts: 2957 | From: cali | Registered: Mar 2002
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