hard start

  • Thread starter Thread starter jdoe
  • Start date Start date
J

jdoe

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.
Click to expand...

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
 
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.
 
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.
Click to expand...

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