Well, if anyone recalls, i was having troubles with erratic idle. Anywho, here goes. Changed my gastank and ended up plugging a fuel filter 30 mi. from home, so i drove it home with the plugged filter. Carboned up the Idle air ctrl valve, so i took that off and cleaned it up good, and that solved my funky idle. However, the bronco now has troubles with a bad hesitation. Figured I may have plugged another filter, so it put a new one on. Now, the hesitation is only under load and at any engine temperature (cold or up to operating temp) and it will rev up fine in neutral or park. The truck is a 1990 5.0L (no mods) with a rottenmatic. New tank, old pump, new fuel filter, no luck. Any Ideas what could be wrong? Another bad sensor? Something else in need of cleaning? I'm lost as to what the problems could be. I think i read in another topic something about the Intake Air Temp sensor causing a hesitation, but I don't know much about that, let alone where its located and how to test it etc. Any help is greatly appreciated, thanks. Oh yeah, and there aren't any codes being thrown at me. Thanks again.
Bad Hesitation Problems
Started by
Guest_JerkyB2K3_*
, Feb 29 2004 07:19 PM
12 replies to this topic
#2
highboy73
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FORDing thru life
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Posted 29 February 2004 - 07:28 PM
start with the basics,check pump pressure,timing,tune it up
I always start with the simple stuff first what about injectors?they don't always show up as an idiot light.if your computer light isn't on it doesn't mean nothing is wrong.
BUY A BOOK ON YOUR TRUCK learn everything you can about it.the book will teach you test parts yourself.
there is nothing wrong with automatics
I always start with the simple stuff first what about injectors?they don't always show up as an idiot light.if your computer light isn't on it doesn't mean nothing is wrong.
BUY A BOOK ON YOUR TRUCK learn everything you can about it.the book will teach you test parts yourself.
there is nothing wrong with automatics
#3
Guest_JerkyB2K3_*
Guest_JerkyB2K3_*
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Posted 29 February 2004 - 07:32 PM
Well, i don't want to spend any more than i have to, i'm going to be selling it once i get this little problem worked out. I don't have anything against automatics, its just not my tranny of choice. I like the direct feeling and feedback that a standard trans gives.
#5
Guest_JerkyB2K3_*
Guest_JerkyB2K3_*
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Posted 01 March 2004 - 11:15 AM
Yeah, gave up saturday and put my firebird back on the road. After 4 fuel filters and 2 weeks worth of smelling like gas, i am about to wits and wallets end with this money pit. It's been nothing but a PITA since i got it. Anyways...It still hesitates...
#7
Guest_JerkyB2K3_*
Guest_JerkyB2K3_*
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Posted 01 March 2004 - 04:17 PM
Well, the bronco doesn't have a mass air sensor, at least there isn't one mounted externally on the intake tubes, i've never seen or known one to be mounted inside the intake itself, but yes, it def. seems to be running rich.
#12
Shadow_D
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Posted 16 March 2004 - 07:12 PM
Have you ever had a 2 stage fuel injection cleaning done? What it does is first a cleaner is put in the fuel tank then the second stage is another cleaner feed through the vacuum line cleaning everything in the top end. I don't like to do this but "Jiffy Lube 
" can do this for you for around $70. If you go there tell them you only want the fuel injection cleaning NOTHING ELSE!
I used to work for them and quit because they scammed there customers.
" can do this for you for around $70. If you go there tell them you only want the fuel injection cleaning NOTHING ELSE!I used to work for them and quit because they scammed there customers.
90 Bronco Full Size
Police Package
351W
E4OD
31" Tires
Going through a complete restore
http://fullsizebronc...ail.php?id=1650
Police Package
351W
E4OD
31" Tires
Going through a complete restore
http://fullsizebronc...ail.php?id=1650
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