95 rs ecu

yiorta · Post by **yiorta** » June 19th, 2006, 2:12 pm

As i had mentioned in a previous topic I tested TEN and GND with a multimeter and found continuity. The online manual in page F1-039 indicates that this might mean problem! Now i disconnected the O2 sensor and tried to pull codes by the ECU was clean. It should indicate problem with O2 sensor. I guess my ECU is gone? I remind you that I have idle and hesitation problems under electrical load and have tested anything but the ECU!!!

ariesdude · Post by **ariesdude** » June 19th, 2006, 2:40 pm

Usually if your ECU is gone - your car wont start - you wont get spark or fuel or both.

What setting did you use on the multimeter and what was the reading you got?

O2 sensor codes are hit or miss - i drove mine with a (accidentally) disconnected O2 sensor for 2 weeks without any codes. Try disconnecting the TPS - it will immediately throw a code (if you have ATX the tranny will throw a code too) - and dont forget to reset the ecu afterwards.

yiorta · Post by **yiorta** » June 20th, 2006, 2:44 am

I tried the "buzzer" continuity method. So the buzzer was beeping! If I disconnect the (new) O2 sensor I don't have idle problems. Driving with it disconnected will i harm my catalytic converter?

Thanks.

ariesdude · Post by **ariesdude** » June 20th, 2006, 12:21 pm

yiorta wrote:I tried the "buzzer" continuity method. So the buzzer was beeping! If I disconnect the (new) O2 sensor I don't have idle problems. Driving with it disconnected will i harm my catalytic converter?

Thanks.

Yes the ecu will go into limp mode (running on default rich settings) which will foul out the cat and you loose power too.
If the diagnostic pin "TEN" is somehow shorted to ground your check engine light will be blinking or it will just turn off (depending on codes) after you leave the key in the on position for a while.