Rough Idle

Jay Dias jaydias at shaw.ca
Fri Dec 14 16:48:59 EST 2001


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just got my 86 5kt out of the shop, i was experiencing a rough idle when co=
ming to a stop and when i initially put the car in drive.
my problem was a large split on the bottom of (michelin man hose) intake ma=
nifold to intercooler. My mechanic also adjusted co value. Previous to this=
 i use to have vapour lock and dirty fuel injectors causing idle problems. =
I used chevrons techron (concentrate) to clear up that issue works great an=
d i put a bottle in before each oil change. The other problem was at high a=
mbient temperatures vapour lock would occur because the t'stat for fuel inj=
ection cooling fan was not coming on at times, so i replaced t'stat and ins=
talled  a switch on my dash so i could manually control it via override dur=
ing stop and go traffic ( this works great for high temp issues).

hth,

jay


A little update on my stalling when cold and coming to a
stop/rough idle prob. It seems that the car "acts" up
here and there (1 out of 4 cold starts) the other times
it is just fine. In fact, when it is acting up I can
turn the ignition off and then right back on it most
likely will run properly.

So knowing this, I have a(nother) "quick" question about
my rough idle and stalling problem:

My next steps on solving this problem was to either be
to replace the breather hose or the o2 sensor. Would
either of these replacements likely be causing an
intermitenent problem like I am having? Should I be
looking somewhere else (wires, plugs, cap, rotors)?

TIA

Blu

Forgot to mention that the caps, rotors, plugs and wires
were replaced recently and should all be OK.






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