95 CAVALIER CRANKS BUT WONT START

10

Asked by Aug 01, 2012 at 06:25 PM about the 1995 Chevrolet Cavalier LS

Question type: Maintenance & Repair

CAR JUST DIED WHILE DRIVING NO SPUTTER NOISES OR ANYTHING JUST DIED
HAS  SPARK AT PLUGS. HAS FUEL. INJECTOR VOLTAGE PULSES TO 1.5 LIKE THEY SHOULD
SCANED WITH ACTRON CP9145 SCANNER AND IT BRINGS UP NO DTC
DATA IS:
A/F DESIRED        7
LT FUEL TRIM      128
ST FUEL TRIM      128
LT FUEL TR CL       21
BARO V                 4.96
BARO (“HC)        30.63
CLNT STRT          86
EGR SOL              OFF
EXHAUST 02      LEAN
FUEL CUT OFF   NO
IAC POS               116
INJ PW(MS)        21.8
KNOCK RET         0
LOOP STATUS     OPEN
MAP C “HC”        28.99
MAP     (V)             4.67
IAT                         95
025 (MV)              462
025 CROSSCNTS  0
PNP SWITCH        P/N
PROM ID               1893
SPARK ADV           3
TPS SENSOR(V)     0.43

7 Answers

31,125

How exactly did u check ur injector pulse voltage.... oscilloscope?

10

voltage meter at wire plugs to the 4 injectors. like you would check with noid light only I used the volt meter

56,855

Have you done a compression test? If all cylinders are really low, timing has jumped. HTH. - Jim

1 out of 1 people think this is helpful.
31,125

Srry for the delay. Check the resistance on each injector. And check crank sensor look at rpms while cranking. If you don't have a way to do that then check the sensor for pulses while cranking with a dvom

10

it was a timing broken timing chain. thanks everyone.

1 out of 1 people think this is helpful.
56,855

You're welcome.

I need help

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