Chevrolet Repair: 96 blazer starting problem, coolant temp, crank sensor

Question
My blazer does not want to start when cold, although after it was running it starts fine, already replaced crank sensor and checked coolant temp sensor. also there is no engine codes present. oh yea also checked fuel pressure and it looks fine

Answer
The ECM is what enriches the fuel to start, but it depends on the temp sensor for a correct reading.
Check this site.

http://www.chevytalk.org/threads/showflat.php?Cat=0&Number=1359709&an=&page=&vc=...

Scroll down to near the bottom of page one, to Chevytechs post. Actually, here it is, but you should go check it out anyway. (I am Fixitfox33 on that site)

Chevytech
Senior Member


Reged: 04/25/04
Posts: 785
Loc: Minnesota, USA   Re: 95 Tahoe stumble,hesitation [Re: kreatve1]
     #1366279 - 11/12/05 05:50 AM   Edit     Reply     Quote     Quick Reply    




Quote:
--------------------------------------------------------------------------------

Would the temp sender cause it to die after cold start up? It only does it once or twice when it's cold.


--------------------------------------------------------------------------------

The temp sender is very important at all times. If the temp sensor is in error, telling the computer the temperature is warmer then it really is at start up, it would be like not having the choke closing enough on a carbureted engine.



Quote:
--------------------------------------------------------------------------------

Does anyone know how to check the the temp sender


--------------------------------------------------------------------------------



These specifications are from a 1993 light truck fuel & emissions manual. The specifications are the same for many different engines – coolant sensors.

Coolant sensor resistance specifications:
177 ohms @ 212 deg. F. or 100 deg. C.
241 ohms @ 194 deg. F. or 90 deg. C.
1802 ohms @ 95 deg. F. or 35 deg. C.
2238 ohms @ 86 deg. F. or 30 deg. C.
2796 ohms @ 77 deg. F. or 25 deg. C.
3520 ohms @ 68 deg. F. or 20 deg. C.
4450 ohms @ 59 deg. F. or 15 deg. C.
5670 ohms @ 50 deg. F. or 10 deg. C.
7280 ohms @ 41 deg. F. or 5 deg. C.
9420 ohms @ 32 deg. F. or 0 deg. C.
12300 ohms @ 23 deg. F. or -5 deg. C.
16180 ohms @ 14 deg. F. or -10 deg. C.
21450 ohms @ 5 deg. F. or -15 deg. C.
28680 ohms @ -4 deg. F. or -20 deg. C.
52700 ohms @ -22 deg. F. or -30 deg. C.


Here is a link if you want to join that site. it is free.
http://www.chevytalk.org/fusionbb/index.php?referral/23610/

Van  (Fixitfox33)