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Ford Bronco Problems

231 messages,  Last post on Nov 21, 2009 at 2:24 AM

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#197 of 231 Roaring Engine by CalExplorer Feb 18, 2009 (11:29 am)
I have a 94 Bronco 5.8 lit, When i turn the vehicle on the engine roars at idle like it was in a full out drag race RPM's way up at idle. Once I put it drive the engine slowa itself back down, but at stop signs it revs right back up. Any suggestions? The "Check Enigne" light is not on... Help Replies to this message: 89blackntan (Feb 18, 2009 11:50 am)
#198 of 231 Re: Roaring Engine [CalExplorer] by 89blackntan Feb 18, 2009 (11:50 am)
Replying to: CalExplorer (Feb 18, 2009 11:29 am) MOST LIKELY YOUR THROTTLE POSITION SENSOR. LOCATED ON THROTTLE BODY AND COSTS AROUND $50.
#199 of 231 once again..Redraider by jutmac Feb 28, 2009 (1:24 pm)
I changed out all to MSG....had to wait for taxes to come in....I also replaced the fuel regualtor and the timing was off....now set at 10 degrees.  All is well except for the herky jerky at 35 mph....it used to only do it at this speed now it does it at whatever speed, unless i trounce on it....it runs good.   HERE IS THE KICKER:  It does not do it when it is cold. I am sure it has something to do while on a closed loop but when it warms up back to normal...bucks and snorts....any shade tree answers..lol   by the way...thanks for all your past help...and anyone is welcom to reply Replies to this message: redraider28 (Feb 28, 2009 7:31 pm) jutmac (Mar 01, 2009 10:41 am)
#200 of 231 Re: once again..Redraider [jutmac] by redraider28 Feb 28, 2009 (7:31 pm)
Replying to: jutmac (Feb 28, 2009 1:24 pm) JUMAC,   Glad to hear most of the problems are gone. Did you change out ALL of the spark plugs and also the spark plug wires?   Sounds like we're on a role to getting you running smooth. Replies to this message: jutmac (Mar 01, 2009 10:41 am)
#201 of 231 Re: once again..Redraider [redraider28] by jutmac Mar 01, 2009 (10:41 am)
Replying to: redraider28 (Feb 28, 2009 7:31 pm) Raider..  I did change them all out....Like i said though....it only does it when it warms up??  Someone told me that when i use my tester on the wires and plugs that a fords should show blue spark.....i show orange...any truth to this??  Everything is MSD. Someone also said it feels like a dead miss in it....do you think there could be a blown valve??/ I would like to know what you think before i do a compression check.   Again...Thanks   Jutmac
#202 of 231 bronco 4wd problems by xdeathbroncox Mar 01, 2009 (5:36 pm)
i have the 91 silver series 5.8. and my 4wd will not kick in. its just the push button one and at first the 4x4 light didn't even com on but my bud told me to tap the little electric engine that locks the 4x4 into place and that might work. i taped it then the light came on but wen i put it into drive u don't hear the clunk and it doesn't go into 4wd. help me out please. im a new bronco owner and i really wanna mess some trails up with this thing. haha
#203 of 231 Re: 93 EB bronco 5.0 [redraider28] by khawley Mar 04, 2009 (4:28 pm)
Replying to: redraider28 (Dec 18, 2008 7:50 pm) I just got a 94 with the 5.8 and can't get it started. The vehicle has been sitting for about 5 years and there hasn't been an attempt to start it in at least 2. With the ignition on I pushed down on that stem on the fuel rail and no fuel came out. I changed the fuel filter, checked the inertia swith, fuses, and relay. I'm thinking it has to be the fuel pump but wanted to see if you had and advice before i went out and bought one.   Thanks! Replies to this message: jutmac (Mar 04, 2009 4:52 pm) redraider28 (Mar 04, 2009 7:42 pm)
#204 of 231 Re: 93 EB bronco 5.0 [khawley] by jutmac Mar 04, 2009 (4:52 pm)
Replying to: khawley (Mar 04, 2009 4:28 pm) As Redraider once told me." I am just a shade tree mechanic" but if you have no fuel coming out of your fuel rail then you have your problem narrowed down. I know it sucks throwing money at them but sometimes you just have to.   On a side note to Redraider....the hercky jercky or "trailer-hitching" effect, as someone put it, turns out to be the torque converter in my tranny. Go figure...I knew my motor was running to smooth for something cheap and simple. HA. Thanks for all your help.   Jutmac Replies to this message: redraider28 (Mar 04, 2009 7:42 pm)
#205 of 231 Re: 93 EB bronco 5.0 [jutmac] by redraider28 Mar 04, 2009 (7:42 pm)
Replying to: jutmac (Mar 04, 2009 4:52 pm) JUTMAC,   Glad you got it figured out. I had to think about that one and asked a buddy at work. I was going to say start with the simple things.....fuel addative to take care of any BAD GAS, fuel filter, etc. Next would be the speed sensor, or torque converter......one located on your tranny and the other on your differential.   In any case, glad to help any time.
#206 of 231 92 Bronco pick up coil problem 5.0 by yimmieb Mar 04, 2009 (9:16 pm)
Anyone know what causes the pick up coils to go bad. I replaced the first one with a new one from auto zone. it started right up but didn't run 100% and lasted 2-3 weeks and let me set. I replaced it again with a new one from auto zone. This one started right up but ran poor, missed & cut out, the tach would also fall to zero when it was miss firing. It ran worse on a hard pull in overdrive. I was told to replace it with oem, I did and it ran great even in O.D. on hard pulls. it was in about 3 weeks and today it let my son set. When I try to start it the tach makes one jump and falls to zero staying there while cranking. I know if I replaced it again it would start right up, and while cranking the tach would go up to 200-300 rpm's before starting.Any ideas what keeps killing them?

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