spx96
Bone Stock
Posts:33
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| 07/26/2007 6:54 PM |
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| My 97 chevy z/71 has a 5.7 and auto trans. My tack and speedo stopped working and my shift indicator light goes out and the truck won't go into 1st gear. This comes and goes. So i took it to auto zone and had it scanned. It gave a lot of tranny sensor errors what could it be any help would be great. Thanks |
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SnoMan
Lift & Lockers
Posts:943
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| 07/27/2007 10:04 AM |
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| What were the error codes??? Also, you may have separate problems because I think a grounding issue is cause the indicator/tach problem but they could all be related to a bad ground. |
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spx96
Bone Stock
Posts:33
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| 07/27/2007 2:50 PM |
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| what groung would it be? |
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SnoMan
Lift & Lockers
Posts:943
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| 07/27/2007 4:26 PM |
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| Check grounds in dash area for starters and again if there was codes thrown it would help a lot to know the codes. |
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spx96
Bone Stock
Posts:33
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| 07/29/2007 6:33 PM |
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| The guy at auto zone said there were 33 tranny codes |
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SnoMan
Lift & Lockers
Posts:943
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| 07/29/2007 7:37 PM |
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quote:
Originally posted by spx96
The guy at auto zone said there were 33 tranny codes
Get them to write them down or print them out because many codes can point to same part. |
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spx96
Bone Stock
Posts:33
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| 08/11/2007 8:00 PM |
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Hi here are the codes
p0172 sytem too lean bank2
p0141 o2 sensor heater circuit malfuction bank 1 sensor 2
p0175 system too rich bank 2
po302 cylinder & misfire
po740 torque converter clutch circuit malfunction
po753 shift solenoid A electrical
po758 shift solenoid B electrical
po785 shift timing solenoid malfunction
p1860 ???????
I hope someone can help me w/ this, thanks
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SnoMan
Lift & Lockers
Posts:943
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| 08/12/2007 4:34 AM |
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| Well for starters it sounds like it is running rich for first 4 codes. It could be a O2 sensor but a bad ECT sensor (engine coolant temperature) could make it rich without coding for sensor snf cause these problem, you might start there. On the tranny codes you might check connections on harness down there and the electrical grounds for starters. |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 08/12/2007 9:05 AM |
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There are a lot of codes that spread across many areas. Do you think it might be wise to clear the codes and then have it checked again? This way it would rule out false positives.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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SnoMan
Lift & Lockers
Posts:943
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| 08/12/2007 10:34 AM |
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quote:
Originally posted by webby4x4
There are a lot of codes that spread across many areas. Do you think it might be wise to clear the codes and then have it checked again? This way it would rule out false positives.
Rick
A bad ECT can cause a lot of codes like this. Next choice would be to check MAP sensor for first 4 codes. I feel this is a problem caused by running rich and these are to places to start. |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 08/12/2007 10:43 AM |
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quote:
Originally posted by SnoMan
A bad ECT can cause a lot of codes like this.
A bad coolant temp sensor can cause shift solenoid/shift timig error codes?
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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SnoMan
Lift & Lockers
Posts:943
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| 08/12/2007 10:59 AM |
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quote:
Originally posted by webby4x4
quote:
Originally posted by SnoMan
A bad ECT can cause a lot of codes like this.
A bad coolant temp sensor can cause shift solenoid/shift timig error codes?
Rick
Well I was trying to whittle the list down some but a bad ECT sensor can cause tranny to shift strange. I had a friend that a few years ago thought his 4L80 was going south in his old work van. He replaced the ECT and tranny would fine and still does today. |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 08/12/2007 11:03 AM |
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| Wow! That, I did not know. Thanks for the info SnoMan! |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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spx96
Bone Stock
Posts:33
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| 08/12/2007 4:12 PM |
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| were is the ect senor located at |
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spx96
Bone Stock
Posts:33
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| 08/12/2007 4:19 PM |
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| is that the same thing as a coolant temperature sensor? Thats what its called at autozone i just wanted to make sure it was the same thing. |
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SnoMan
Lift & Lockers
Posts:943
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| 08/12/2007 5:53 PM |
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quote:
Originally posted by spx96
is that the same thing as a coolant temperature sensor? Thats what its called at autozone i just wanted to make sure it was the same thing.
There is two on that engine, one for gauge and one for computer. You want one near thermostat housing, not in head. |
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spx96
Bone Stock
Posts:33
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| 08/12/2007 6:33 PM |
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| I will replace that and clear codes and go from there thanks! |
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