hard start

96 SL2. Thought I had all the bugs out but yesterday on 3 occasions with a
warm engine the engine cranks fine but very hard to start. Looked at a TSB
referring to this and it mentioned a string of DTC's. Well there are no
DTC's and when it's cold it fires up perfectly. If you crank long enough
when this occurs (10-15 seconds) it will fire up and than after a short time
run well.
Up to this point I have R&R'd the throttle body and cleaned. New NGK plugs
(from the Saturn dealer) and new wires carefully routed and cleaned the
corrosion off the coil towers.
Ideas?
Larry

>
>96 SL2. Thought I had all the bugs out but yesterday on 3 occasions with a
>warm engine the engine cranks fine but very hard to start. Looked at a TSB
>referring to this and it mentioned a string of DTC's. Well there are no
>DTC's and when it's cold it fires up perfectly. If you crank long enough
>when this occurs (10-15 seconds) it will fire up and than after a short time
>run well.
>Up to this point I have R&R'd the throttle body and cleaned. New NGK plugs
>(from the Saturn dealer) and new wires carefully routed and cleaned the
>corrosion off the coil towers.

Sounds like it could be a coolant temp sensor.

Kinda my thought too. I figured it might throw a DTC though. Strange little
car. Every time I think I've got the little bugger figgered out it throws
something new at me ;-) Really testing my patience.
Larry
"BANDIT2941" > wrote in message
...
> >
> >96 SL2. Thought I had all the bugs out but yesterday on 3 occasions with
a
> >warm engine the engine cranks fine but very hard to start. Looked at a
TSB
> >referring to this and it mentioned a string of DTC's. Well there are no
> >DTC's and when it's cold it fires up perfectly. If you crank long enough
> >when this occurs (10-15 seconds) it will fire up and than after a short
time
> >run well.
> >Up to this point I have R&R'd the throttle body and cleaned. New NGK
plugs
> >(from the Saturn dealer) and new wires carefully routed and cleaned the
> >corrosion off the coil towers.
>
> Sounds like it could be a coolant temp sensor.

You can stick an ohm meter on the coolant temp sensor when its cold and
then again when its hot. If you had a chart you could compare the
resistance to the actual temp.

In article <qx0Yc.330307$%_6.310009@attbi_s01>, says...
> Kinda my thought too. I figured it might throw a DTC though. Strange little
> car. Every time I think I've got the little bugger figgered out it throws
> something new at me ;-) Really testing my patience.
> Larry
> "BANDIT2941" > wrote in message
> ...
> > >
> > >96 SL2. Thought I had all the bugs out but yesterday on 3 occasions with
> a
> > >warm engine the engine cranks fine but very hard to start. Looked at a
> TSB
> > >referring to this and it mentioned a string of DTC's. Well there are no
> > >DTC's and when it's cold it fires up perfectly. If you crank long enough
> > >when this occurs (10-15 seconds) it will fire up and than after a short
> time
> > >run well.
> > >Up to this point I have R&R'd the throttle body and cleaned. New NGK
> plugs
> > >(from the Saturn dealer) and new wires carefully routed and cleaned the
> > >corrosion off the coil towers.
> >
> > Sounds like it could be a coolant temp sensor.
>
>
>

>
>Kinda my thought too. I figured it might throw a DTC though. Strange little
>car. Every time I think I've got the little bugger figgered out it throws
>something new at me ;-) Really testing my patience.

Nope.....most CTS failures don't throw a code......