Buckin Bronco, The saga continues

[aviator22]

Reference the earlier post about stumbling, bucking at constant speed with slight applications of throttle.

Thanks for the heads up on the wiring, the number 5&6 wires were swithched on the wrong plugs. hard to believe I didnt notice it before. Switched them, and guess what. Now she really runs bad, even at idle I can even hear mild misfiring and smell a real rich condition. I am really beginning to think the wires, plugs and quite possibly the coil pack need to be replaced. It seems as if a couple of cylinders are not even getting a proper burn based on the misfire and rich smell.

I have the wires and plugs on order. The coil pack is just screaming to be replaced with that suspect spot I found, but I bet it aint cheap!!! I had a coil pack go bad on another car and it ran like **** until I replaced it

For those of you suggesting the cam Position Sensor....I have not ruled it out. After the wires, plugs and coil pack there isn't much left!!!! ANy more feedback based on the new developments are always appreciated.

Boy I'll tell ya..I never thought I would own a car with such a mysterious problem ailing it. I feel the end coming soon.

 

[HopefulSHO]

How easy is it to start the car?

 

[luigisho]

For reference coil packs are $80 at Autozone and oem around $95 from Fordpartsonline.com. Cam sensor may do the trick.

 

[aviator22]

It is now. It requires application of gas and it is really rough getting started. Just to mention as a side note. This electric pump is awfully noisy, even after engine start-up. I did run the car out of gas once. Do you think I cooked the fuel pump with no gas running through it to cool it???

 

[SHOfun 93]

I have a coil pack in my closet from another sho that was totalled very young I could sell you if you are interested. Email me for details..

 

[91SHO]

I think that before you get the coil pack wait on those plugs and wires! It is amazing what a difference that alone will make. Do you know how old the o2 sensors are? Could be sending wrong info to the computer. Any codes? Just tring to get a better idea of where you are at on this baby. No vaccum leaks anywhere. Hundreds of things can do this, but it will be the one you overlook!! Trust me.

 

[aviator22]

I am anxiously awaiting the wires and plugs and expect them thursday or friday. I agree about the coil pack. One thing at a time (my gut feeling though is that sucker is bad!! The burn mark in the no. 4 coil position was not something someone wants to see on any car). I dont know how old the O2 sensors are but they are siezed up pretty good so chances are they are ancient. I'm guessing they are not too expensive at somewhere like Autozone. Due to the rich flooded smell that occurred after switching the wires to the correct position, I have to believe that a couple of cylinders are not getting spark. I know a faulty O2 sensor can greatly affect the air fuel ratio, so like you said...it could still be anything. Even if they are not the problem. The new plugs and wires are a good idea as just a part of standard maintenance anyway, so I dont mind doing them. I wanted to ask those who have pulled the intake and valve covers. How long does this take?...and what should I beware of? This will help me plan when to do this and what I may need (besides gaskets)

 

[91SHO]

I had the intake off last week and replaced the valve cover gaskets/ plug seals. I always say expect the unexpected! It really isn't that hard. Just be sure that if you don't take things apart every day,like I do, to mark all the vaccum hoses and coolant lines. There is a great write up on this at www.shotimes.com under The Care and Feeding section. It will probably take you the first time around two hours. Most of that will be taking it apart and putting it back together. After that it will maybe take you an hour.
As far as what else you could, that is only limited by your budget thumbs_u . The o2 sensors are only 38.99 a piece at autozone. I just warmed my engine therefore the ehaust was hot and the o2 sensors came right on out. They are quite possibly one of the easiest part to change on this beautiful cars.

 

[luigisho]

The intake and valve cover removal are not that difficult. Make sure you label stuff as it comes off to get reassembly right. Especially the hoses around the throttle body. Removal the first time I would guess 40-60min. paying more attention to stuff the first time. It gets faster after a time or two. Most important is to use a torque wrench during reassembly. The bolts and their respected threaded holes are very soft and prone to breaking. Correct torque is essential. If you break a bolt on the rear valve cover you just increased the difficulty of the job by a significant amount of time. These are very expensive from the dealer (over $20 each only in packs of 3or6). Careful with those little coil pack bolts too. Very easy to break.