Car is bucking at cruise, any ideas?????

Fastime331

Founding Member

Dec 23, 2001

570

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St. Petersburg Fl.

Oct 7, 2003

#1

• Oct 7, 2003

• #1

Car is bucking at cruise, any ideas?????




New 02 sensors, plugs, tps set correct, fuel filter etc.

I just installed a new MSD Billitech distributor and the car is now bucking at 5th gear cruise. The car ran fine before I added this thing is there ever something wrong internally with these things?

 

warmdye

Founding Member

Oct 2, 2000

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Out in the Desert

Oct 7, 2003

#2

• Oct 7, 2003

• #2

surge demon

here we go again

 

NYC LSC

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Feb 16, 2001

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Staten Island, NYC

Oct 7, 2003

#3

• Oct 7, 2003

• #3

Your timing is off. My old 305 T-5 Camaro used to do the same thing. I tried port and manifold vaccum thinking that was the problem, and it turned out to be a timing issue.

Have you checked it since the dizzy install?

 

Fastime331

Founding Member

Dec 23, 2001

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St. Petersburg Fl.

Oct 7, 2003

#4

• Oct 7, 2003

• #4

NYC LSC said:

Your timing is off. My old 305 T-5 Camaro used to do the same thing. I tried port and manifold vaccum thinking that was the problem, and it turned out to be a timing issue.

Have you checked it since the dizzy install?

Click to expand...

Of course yes, So in other words it's probably the distributor acting up...

I'm going to swap back the stocker and see what that does.

 

Fastime331

Founding Member

Dec 23, 2001

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St. Petersburg Fl.

Oct 7, 2003

#5

• Oct 7, 2003

• #5

warmdye said:

surge demon

here we go again

Click to expand...

NO it's not surging at idle, It's idles steady steady

 

retro50

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Jul 15, 2003

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Plymouth,MA

Oct 7, 2003

#6

• Oct 7, 2003

• #6

Try seperating the #5 and #6 wires. Don't run them side by side. You may be experiencing ignition crossfire. This will cause it to buck under light loads in 5th gear.

 

warmdye

Founding Member

Oct 2, 2000

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Out in the Desert

Oct 7, 2003

#7

• Oct 7, 2003

• #7

Apparently your not familiar with the famous surge demon thread. I suggest you review it.

 

wrathchild

Founding Member

Apr 5, 2000

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Altoona, Pa

Oct 7, 2003

#8

• Oct 7, 2003

• #8

This may not be your problem but it could be related. Ever since i built my motor i always ran the egr vacuum directly from the intake. I had a part throttle miss and blipping the throttle from a dead stop would result in it spettering and then revving.

I rerouted my egr vacuum to the original spot and it is like a whole different car now. I can cruise at 1500 in 5th with absolutely no miss or buck at all.

 

FceDncr

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May 10, 1999

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Izmir, Turkey

Oct 8, 2003

#9

• Oct 8, 2003

• #9

Fastime331 said:

The car ran fine before I added this thing is there ever something wrong internally with these things?

Click to expand...

Could be. I had similar problems, though usually when hot and coming to a stop, but also had bucking at cruise at times. Brand new MSD, and guess what? It had a bad pickup coil inside the distributor. If it's less than a year old, still under warranty, contact MSD through their website and have it sent in for a rebuild. That's what I did, and never had a problem since.

 

itltrot

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Nov 12, 2000

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Ponca City, OK

Oct 8, 2003

#10

• Oct 8, 2003

• #10

i too had the surge demon and mine was a fuel pump that was losing pressure and causing the car to surge...it ran fine at an idle...just another suggestion

 

Fastime331

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Dec 23, 2001

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St. Petersburg Fl.

Oct 8, 2003

#11

• Oct 8, 2003

• #11

Notch Rocket said:

Could be. I had similar problems, though usually when hot and coming to a stop, but also had bucking at cruise at times. Brand new MSD, and guess what? It had a bad pickup coil inside the distributor. If it's less than a year old, still under warranty, contact MSD through their website and have it sent in for a rebuild. That's what I did, and never had a problem since.

Click to expand...

--Exactly my issue! Dosen't do it until it's all warmed up and of course it's hot here in Fla. That's what I'm thinking... This dist. is like out of the box new. The car was FINE before. All I did was put in this new MSD distributor and now this $hit.
Tonight I'll finally get a chance to go by my shop and swap out the two. I bet $$$ this new POS is causing all my probs.

Posted by itltrot - Today at 11:17 AM
i too had the surge demon and mine was a fuel pump that was losing pressure and causing the car to surge...it ran fine at an idle...just another suggestion

--My fuel pressure is rock steady according to the guage.

Posted by wrathchild - Today at 12:54 AM
This may not be your problem but it could be related. Ever since i built my motor i always ran the egr vacuum directly from the intake. I had a part throttle miss and blipping the throttle from a dead stop would result in it spettering and then revving.

I rerouted my egr vacuum to the original spot and it is like a whole different car now. I can cruise at 1500 in 5th with absolutely no miss or buck at all.

--Mine is still stock routed as well

 

Fastime331

Founding Member

Dec 23, 2001

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St. Petersburg Fl.

Oct 8, 2003

#12

• Oct 8, 2003

• #12

Thanks for the replys guys. Not sure what I would do sometimes if not for the help available here.

I'll let you all know the outcome tonight...

 

Fastime331

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Dec 23, 2001

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St. Petersburg Fl.

Oct 12, 2003

#13

• Oct 12, 2003

• #13

Fastime331 said:

Thanks for the replys guys. Not sure what I would do sometimes if not for the help available here.

I'll let you all know the outcome tonight...

Click to expand...

Yup swapped in the stocker and it hasn't had the problem again. Great luck I have!

 

warmdye

Founding Member

Oct 2, 2000

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Out in the Desert

Dec 16, 2003

#14

• Dec 16, 2003

• #14

so what did ya do with the MSD distributer?

 

Black331Stang

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Apr 29, 2003

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Long Island, NY

Dec 16, 2003

#15

• Dec 16, 2003

• #15

warmdye said:

Apparently your not familiar with the famous surge demon thread. I suggest you review it.

Click to expand...

yeah id like to know what was the culprit also.

and buddy, FYI, what he was describing isnt the "SURGE DEMON."

 

warmdye

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Oct 2, 2000

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Out in the Desert

Dec 16, 2003

#16

• Dec 16, 2003

• #16

Ok tough guy please enlighten us of the true nature of the surge demon.

From the classic "Surge Demon" thread of a few years back started by Goslo or Noslo I recall the surge demon as being an engine surge occuring at part throttle or cruise. I also recall this thread as being the longest thread ever on this board. Anybody else remember that thread?

 

Fastime331

Founding Member

Dec 23, 2001

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St. Petersburg Fl.

Dec 18, 2003

#17

• Dec 18, 2003

• #17

warmdye said:

so what did ya do with the MSD distributer?

Click to expand...

It's in the closet, I have to send it back as defective....