SHO bucking!

[bcdescd22]

OK I did my gasket's about a week ago! I put autolite plugs and borg n warner wires on it! Well just today it started to buck on me bad! The gap on the plugs were .45! The crank shaft position sensor has also been replaced and the gap on that was set by the mechanic! Could it be the plugs? Or is my cam shaft position sensor going out? I ran the codes on it and theres no codes at all?? Its on a 94 ATX with 113K on it.

 

[SASHO91]

were all these done at the same time?


also, did you run both the KOER-KOEO tests?

 

[greenbeanmtx]

when does it buck? If it does it when you apply the throttle after rolling off a hill or at the exact same spot in the rev range every time id be willing to bet the tps sensor has a flat spot. I had this problem on mine a while back where it felt like there was slack in the drivetrain and Sdpatt kept telling me it was the tps and finally i replaced it for the 2nd time and it worked. I bought a faulty tps sensor from orielly that failed about 2 months after purchase. Hope that helps some

 

[bcdescd22]

the Crank position and water pump was done today! But The valve cover n well oil gaskets and plugs and wires was done last week! It bucks when you come to a complete stop or while your sitting?

 

[SHOtimer]

Those plugs and wires will not work well with the SHO motor. You should replace them with Motorcraft parts.

try

www.fordpartsnetwork.com

They have a Taurus SHO page if you look on the left...

Doug

 

[Ishodu]

At least try changing the plugs first. IMO Motorcraft are the only plugs to use.

 

[bcdescd22]

Yea I think I found my prob 1 of my front plug wires wasnt even on the plug I barley pulled it and it came off so im gettin motor craft plugs tommorow!

 

[SeanMc]

Motorcraft plugs and Taylor wires are the best

 

[SHOtimer]

Yea I think I found my prob 1 of my front plug wires wasnt even on the plug I barley pulled it and it came off so im gettin motor craft plugs tommorow!

Those plugs are a problem, but the wires might be the larger suspect. Replace them both.

Doug

 

[oh_SHO]

Chris, we put Taylor wires on my neighbors car and they fit very nice. I think he paid about $80 for them... Just an FYI if you decied to replace the wires again.

 

[bcdescd22]

UPDATE: OK I replaced thoes cheap wires that fell apart with prem wires! And I also replaced the CID with the wells from autozone! And Everyknow and then it bucks! But I notice the power is back! But When I was giving it gas it the engine cut out! The Crank Shaft was replaced and gapped correctly Still no codes! And I unplugged the MAF that didnt help anything. Any suggestions? Bad Coil Pack or TPS?

 

[bcdescd22]

oh and no signs of air leak already check

 

[SHOtime2511]

check the ground strap that goes from the left side of the fire wall
to the intake manifold,its a large black wire
i have forgot to attatch that more than 1 time!

 

[Huntervf]

Did you at least use Autolite double platnums? The SHO ignition system is is pretty hot; anything less than a double platnum just won't hold up.

Cam sensor will have absolutely nothing to do with a bucking situation so don't even think twice about it. It sounds like an ignition problem... what were the "premium" wires you used? The SHO is finicky... use motorcraft, taylor or AC Delco wires only, as those wires will fit correctly. For plugs I recommend only Ford double platnums, AGSP-32FM. Get some decent plugs/wires in that thing and I bet your problems go away.

 

[bcdescd22]

I used a set of prem belden that i got from napa. I paid 115 for em and I already have motorcraft plugs in em! I just bought the wires yesterday

 

[Huntervf]

Never heard of belden... I'd still take those wires back and get a set of something mentioned above. You can order AC Delco wires from Midwest SHO for $59.00 and those wires are identical to Motorcraft. A lot of people have found the hard way that even "premium" wires aren't the right ones for the SHO.

Also, are you sure you have the wires routed properly? It's a common mistake to cross up the #5 and #6 on the front bank. It should go:

(engine)
1 2 3
4 5 6

(coil pack)
5 1
6 2
4 3

 

[shoteen95]

my car has a slight bucking problem under steady throttle. Usually between 30-50mph crusing, just touching the gas. It always has (since i've been driving it). I've cleaned the MAF, have new motorcraft plugs, Champion wires (seem to be of quality, the well seals fit very snug against the valve cover, and they look just like the motorcrafts i pulled off).

Perhaps i'll try a new TPS and see if that smooths things out.

 

[witstick]

Hi, my 93 atx does the exact same thing, bucks under light throttle or steady throttle. I replaced the TPS and id didnt help at all. I was thinking maybee its the O2 sensors/?? BTW: i had the 60k done, new plugs, wires, gaskets...

 

[bcdescd22]

Problem solved for now I paid $37 for my ac delco wires and car runs great! Took thoes $130 wires back!

 

[Huntervf]

Problem solved for now I paid $37 for my ac delco wires and car runs great! Took thoes $130 wires back!

Isn't it just AMAZING what the right wires will do for a SHO?