It's not running again...

Rexxenexx

Active member
Re: It's not running again...

I'll note everything on the Autoxray over the weekend with+without the temp sensor plugged in.
 

Rexxenexx

Active member
Re: It's not running again...

I'm in the Ty right now.
With the temp. sensor unplugged and running the Autoxray says:
Coolant temp -38.6*F
Startup temp 54.5*F
Thr Sensor 0.64V
Thr angle 0%
Eng RPM 775
o2 154-870 mV up and down
o2 Cross 80
Knock Sen 77
Knock Ret 0*
Running time 946 sec
blah blah lots of extra junk

With Sen Plugged in:
Coolant temp 197.6*F
Startup temp 200.3*F
Thr Sensor 0.64V
Thr angle 0%
Eng RPM 725
o2 140-870 mV up and down
o2 Cross 209
Knock Sen 107
Knock Ret 0*
Eng. runtime 223 sec
etc..

I'm taking the batt off for a bit to reset the ECU

Update: No trouble codes. Started up w/ a tiny bit of hesitation with the temp. sensor plugged in.
Coolant temp 200.3*F (?)
Startup temp 200.3*F (WTF is up with that?)
Thr Sensor 0.64V
Thr angle 0%
Eng RPM 725
o2 140-870 mV up and down
o2 Cross 31
Knock Sen 11
Knock Ret 0*
Eng. runtime 420 sec
etc..

Maybe I do need a new temp sensor??

Update: er now it's 203.0*F n/m.

EDIT: I'll stop updating this thread since it's is running now. I may start another thread later closer related to the prob.
 
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bezerk

New member
Re: It's not running again...

have you tried disconnecting the o2 sensor? i think it your diverence in open and closed loop.
 

sleepy

Member
Re: It's not running again...

Is the truck that warm? I know a couple minutes might get it to temp, but seems fishy - sounds a little like the temp sensor to me. At least partially
 

Rexxenexx

Active member
Re: It's not running again...

What should I be looking for when I disconnect the o2? Instant start like when the temp. sensor is disconnected? My Autoxray says if it's in Open or Closed loop I think.

It was very hot that day (with the drv. door open the sun made the seat impossible to put my back on it), but the engine didn't feel that hot. The gauge in the car always goes 1/4 up so it should be good. I'll buy a new temp. sensor from Martin Chev. tomorrow and swap. If it's the same I'll swap back and clean it to save for later. :D
 

Rexxenexx

Active member
Re: It's not running again...

Tried o2 disconnected today. Same deal. Strange thing is it threw no codes. :p Just the expected code 13 or 15 I forget (Autoxray:coolant temp sensor is too low) or something like that when I tried sensor unplugged again. But nothing about o2 being disconnected. Shouldn't it say something like "o2 out of range"?
I had no time today to get a new coolant temp sensor btw or check the plugs. I have to leave this for the weekend.

UPDATE: Swapped the sensors, didn't do a thing. Tomorrow I'll clean the grounds up top and check plugs. If it's not too expensive I'll swap ign mods to see if that changes anything.
 
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