Going LOOPY
Thread Starter
Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 48
Going LOOPY
My 89 6 spd is in open loop and wants to stay there. New O2 sensor. I checked the voltage in the engine bay. The voltage is in spec. New rebuilt ECM, that fixed the FP voltage problem. Does anyone have an idea what else I can do to correct this problem?
Thank you all
Thank you all
Thread Starter
Drifting
Joined: Feb 2013
Posts: 1,465
Likes: 48
The dash says the car is at 200 degrees. Does the CTS do this ? Last time the CTS went on my 84 it burned one gallon per mile. I thought the car would run rich with a bad CTS. Because it would try to heat the car. Thank you
Melting Slicks
Joined: Aug 2011
Posts: 2,844
Likes: 176
Cts in front of intake is for ecm, if you’re reading the dash gauge it’s not based off cts in intake but 1 in the head. You can shoot a infared gun on the o2 if the o2 is a one wire might not be hot enough. You need 5-600f to get the o2 active. A 3 or 4 wire heated o2 should be installed. When you said you measured mv at o2 was it a fairly steady .450mv or rapidly swinging ?
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