Got Codes...Help Diagnose! - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-17-2003, 11:01 PM   #31
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OK - here'* my take..

740 means that your TCC is not locking up. Are your RPMs too high when crusing around 60 mph?

361 - I believe we're talking about 1361. This code happens when the ignition control module is not sending the ignition control signal to the engine once it is started.

321 - Another code indicating that the ignition control module is not sending the correct signal, in this case, spark reference pulses, to the PCM.

And the ignition module depends upon signals from both the camshaft and crankshaft position sensors.

101 - No signal from the MAF sensor.

You need a good diagnostic using the service manual.

Originally Posted by 95neongirl
OK engine light came on again today...I took it in and these are the codes that were pulled!

740 torque Converter (traction control?)
361 EST line not toggling
321 no 18X ignition pulse
101 Mass Air Flow Failure

now with that said ..this past weekend I took the MAF off and cleaned the throttlebody..with it still on the car ( so the car was started without the maf to burn the cleaner off while i sprayed it...then replaced the MAF..Don't know if that could cause that code or not!

Thanks to anyone who can help!
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