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[kenny71]

98 Catera wont start after driving.... help  ok car starts in the morning no problem...then i park and cut off engine go back and it wont start ...if i leave it there for say 2-3 hours and if i dont drain the battery from trying to get it started. it starts again with no problem but if i leave it in idle without giving it gas it cuts off again and have to wait  2-3 hours again... why is it doing this? i have clogged breather which im about to clean saw creamy paste in breather hose and oil cap ....non on dipstick

[VXL V6]

Check the codes, could be a crank sensor issue. 

[symes]

98 Catera wont start after driving.... help  ok car starts in the morning no problem...then i park and cut off engine go back and it wont start ...if i leave it there for say 2-3 hours and if i dont drain the battery from trying to get it started. it starts again with no problem but if i leave it in idle without giving it gas it cuts off again and have to wait  2-3 hours again... why is it doing this? i have clogged breather which im about to clean saw creamy paste in breather hose and oil cap ....non on dipstick

remove plenum and use airline to blow crud out of ya breathers-effects ya idle- If same after that-do ya plugs

[henryd]

Check the codes, could be a crank sensor issue. 

+1,same symptoms mine had when the crank sensor went,I didn't get a code though

[kenny71]

thanks no codes showing up so far had it at Advance auto yesterday.....would the clogged breather stop it from restarting?? also i was told that if it was a crank sensor it wouldnt start at all...im not sure just dont want to go buying part after part ..thanks again

[henryd]

thanks no codes showing up so far had it at Advance auto yesterday.....would the clogged breather stop it from restarting?? also i was told that if it was a crank sensor it wouldnt start at all...im not sure just dont want to go buying part after part ..thanks again

Wouldn't have thought the breathers would stop it running,when my sensor went car would run fine until stopped at a junction or similar and would then cut out and may take 10-20 minutes before it would restart

[The Red Baron]

crank sensor doesnt always throw a fault code, can be intermitant also. would be code 19. 

[Paddy Flannery]

Although my failing crank sensor showed a code, your non starting issue from warm and being able to start from cold are same symptoms my 2.6 had.

Genuine crank sensor cured it.

[cem_devecioglu]

+1 crank sensor..  be careful for replacement model..

[ted_one]

Had the same last week,crank sensor replaced done 500 miles since.....running as it should

[dbug]

Really need to check codes mate.
However classic signs of failing crank sensor   Only fit genuine GM replacement