Check engine light in '86 5kcstq when accelerating

[Steve Sears]

Luke Jackson <8peaches at snowboarding.com> 11/01/01 01:57PM wrote:

First of all, i would like to thank all who replied to my problem of hot st=
arts, if sure it's the check valve now.  Another thing the car has always d=
one since i had it is whenever i step on the gas, the check engine light co=
mes on.  you kinda have to step hard, not flooring it, but at a certian poi=
nt in comes on.  If i let off the gas a little it goes out.  I know the boo=
k says this could be ncorrect octane, but i always use 93.  Any of you BTDT=
?  TIA,

Luke
'86 5kcstq

Luke,
Had the same problem with my '87 after I r&r'd the valve cover to blast and
paint it (not powder coat - hey, I don't have Huw's access).
After re-assembling, had to be easy on the pedal or the light would come on.
Turned out that in my enthusiasm in re-assembling the top of the engine, I
neglected to re-attach the ground wires under one of the bolts which holds
the cruise control vacuum servo and the throttle cable.  Came across the fix
while browsing the archives/SJM's site - says to check how good the ground
is here - amazing that air is so non-conductive.  Reattached and haven't
seen the light since. (I've returned to babying the throttle now, but due to
poor tranny mounts allowing the tranny to thump the floor under boost - fix
in the works.)
HTH
Cheers!
Steve Sears
1987 5kTQ
1980 5k
1962 and '64 Auto Union DKW Junior deLuxes
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