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Topic: Big Problems! its Missing and i cant figure it out (Read 547 times) previous topic - next topic

Big Problems! its Missing and i cant figure it out

MY 86 is missing really bad every time i leave a stop after it warms up a little. the timing is on i just but new plugs in the wirs are only a few months old.

the cat was clogged and i didnt know it for about 4 days after it stated running like . i cut it out and it still runs like .

i cant leave a stop without it studering and looking like an idiot.

if i floor it it will go but i dont like doing that.

when i am coasting the trans jumps around cause it doesnt now when to shift and the car shakes really bad.

the wires are on the right numbers.

any ideas?

im going to have it hooked up to a computer if my grandpas neighbor will do it.
1986 Cougar LS

Big Problems! its Missing and i cant figure it out

Reply #1
Quote from: cougar86_89
MY 86 is missing really bad every time i leave a stop after it warms up a little. the timing is on i just but new plugs in the wirs are only a few months old.

the cat was clogged and i didnt know it for about 4 days after it stated running like . i cut it out and it still runs like .

i cant leave a stop without it studering and looking like an idiot.

if i floor it it will go but i dont like doing that.

when i am coasting the trans jumps around cause it doesnt now when to shift and the car shakes really bad.

the wires are on the right numbers.

any ideas?
A few things to look for:

Check your distributor for cracks and that the wires are well connected.  Take a spray bottle with water and spray the cap and wires while it's running.  Continue spraying each wire to its full length.  If there is no stuttering you can assume that you have eliminated the cap and wires as being the problem.  If you get stuttering you have found the location of a problem.

Take a propane torch (unlit!) and spray around all of the vacuum/intake connections.  If you get a real change in speed you have found the location of a vacuum leak.

Since your cat was backed up you may have a lot of carbon buildup in the intake/EGR/etc. Try using some Seafoam pulled in through the brake booster line.  Let it set for 10-20 minutes then crank it up.  You should get a lot of white smoke. 

You may have to pull the plugs and look to see if they are already fouled due to the poor running.

Good luck

88 Cougar LS 5.0

Big Problems! its Missing and i cant figure it out

Reply #2
MAP sensor vacuum hose. im going to replace it tonight and if that doesnt work i will try the MAP sensor


with hose on the booster? i need to do that to
1986 Cougar LS

 

Big Problems! its Missing and i cant figure it out

Reply #3
long shot did your harmonic balancer fall apart?  My 86 once did that and it shakes and shudder like a mother flubber.

tc
1986 Mercury Cougar -- Midnight Wine and Taupe  ($1700) in 1999 w/ 103,000 miles.  Now with a motor from an 87 with 54K on it.
1988 Mercury Cougar -- Light Sandlewood Metalic  ($40)  in 2003 with 111,000 miles.  Needs a fender, some welding and a good tune up.  Possibly my next daily if i ever get it to the shop.
1991 GMC Sonoma, My $50 daily driver.