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1982 928 us
 
Join Date: Mar 2008
Location: NH
Posts: 802
Garage
check what when cold starts warm no start

ideas of what to check car will start and run fine when reaches op temp wont start til a wait for 15 minutes. --- picture of these 3 sensors what ones are what , and if failure of any what isnt happening

car cranks hard and fast but wont get that signal to fire up and after shutting off when warm starts right up cold


Old 05-05-2009, 01:44 AM
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1982 928 us
 
Join Date: Mar 2008
Location: NH
Posts: 802
Garage
researching a few more hrs finding out some hated to post when theres info on subject just wanted to be specific on my year 82us ?it is the one on right side in pic than the two together on top

im getting that cold starts reaches temp and shuts the temp sensor would pick-up so thinking when car is already warm shut off and restart its the temp sensor feeding the fuel now and its not working? if temp sensor is good is there another part will check connection,wires,grounds related.

and advised on fuel inj/s clogged or its seal will check
Old 05-05-2009, 09:02 AM
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Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
When it doesn't start, which of these three aren't you getting;
Fuel.
Spark
Compression?

Guessing fuel mixture is off, maybe too lean, so my guess is that the brain doesn't know the motor is cold, but I don't know which wire you need to specifically be testing for what voltage.
Old 05-05-2009, 09:17 AM
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1982 928 us
 
Join Date: Mar 2008
Location: NH
Posts: 802
Garage
thermotime switch is good direction to cold start valve

Rupsey -- on checking the thermotime switch seems to be ok but have the 78euro cold start valve but cant find on 82 could direct from pic where it is. then going to ur article for ohm test on switches, continuity at ..... thanks

Old 05-06-2009, 01:05 PM
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