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rough running 1993 chev 1500 truck


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skyhopper
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Apr 5, 2012, 7:21 PM

Post #1 of 20 (1507 views)
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I have a 1993 chev pickup(cheyenne) 1500 WT with a v6 4.3 2 wheel drive .Truck went into a shop for some tranny work.When it was there 6 vehicles were hit and catalitic converters were stolen.After the cat was replaced the truck started to run like crap.I was told it was a map sensor(changed)temp sending unit(changed)still have a reading on codes that my o2 sensor is not working.(never had one or can find wiring for one.When it warms up about 10 minutes it starts to run very rough.Any ideas?
hopefully this is more informative than my previous post.


(This post was edited by skyhopper on Apr 7, 2012, 9:49 AM)


Hammer Time
Ultimate Carjunky / Moderator


Apr 5, 2012, 7:34 PM

Post #2 of 20 (1496 views)
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Are you getting any check engine light?




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
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Apr 5, 2012, 10:15 PM

Post #3 of 20 (1442 views)
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Quote
chev pickup


Can you be more specific on which pickup?





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


skyhopper
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Apr 5, 2012, 11:27 PM

Post #4 of 20 (1431 views)
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yes I am and we have changed out all the parts except for the o2 sensors as there seems to be no wiring for it


skyhopper
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Apr 5, 2012, 11:28 PM

Post #5 of 20 (1430 views)
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it is a cheyenne.


Hammer Time
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Apr 6, 2012, 6:04 AM

Post #6 of 20 (1423 views)
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Quote
it is a cheyenne.


That's real helpful........... what color is it?




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



skyhopper
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Apr 6, 2012, 1:02 PM

Post #7 of 20 (1390 views)
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In Reply To

Quote
it is a cheyenne.


That's real helpful........... what color is it?



skyhopper
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Apr 6, 2012, 1:04 PM

Post #8 of 20 (1389 views)
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what more did you need as I was answering another question .as stated in the original artical 93 ,chev,v6,cheyenne


Hammer Time
Ultimate Carjunky / Moderator


Apr 6, 2012, 1:10 PM

Post #9 of 20 (1383 views)
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Cheyenne isn't a model, it's a degree if trim. V6 isn't an engine size, is an engine configuration.
Do you have a C1500, K1500, C2500. K2500, S10 2WD, S10 4WD.... etc, etc, etc
Do you have a 4.3L TBI, 4.3L CFI? or maybe something you installed yourself?


Quote
we have changed out all the parts except for the o2 sensors

What's that supposed to mean?

What's been done already?
Any warning lights on?
We don't use crystal balls




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Apr 6, 2012, 1:13 PM)


skyhopper
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Apr 6, 2012, 1:17 PM

Post #10 of 20 (1377 views)
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I am new to this so forgive me that I was not using the proper format,I will start over and hope that it will be more helpful....thnks


Tom Greenleaf
Ultimate Carjunky / Moderator


Apr 8, 2012, 10:04 AM

Post #11 of 20 (1330 views)
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Sky: To me newcomers are welcome but please read the threads and pay attention to dates as some are just plain done even if the original poster didn't come back with with a fix or failure?

Just know that many here hold the word "moderator" with their name and have been around here a while.

Understanding what some posts mean is an art or plain guessing.

We have a company issued ball to read minds - smile. You need to know who is who to use it!



Tom

(edit for spelling)

(This post was edited by Tom Greenleaf on Apr 8, 2012, 10:12 AM)


re-tired
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Apr 8, 2012, 12:20 PM

Post #12 of 20 (1315 views)
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Was it running good other than tranny problem before the cat was "donated" ? Look for the O2 in the exhaust pipeing below the maiifolds and before the cat . If its not there go back to whoever did the exhaust work and have them explain where it went.


LIFE'S SHORT GO FISH


skyhopper
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Apr 8, 2012, 1:18 PM

Post #13 of 20 (1314 views)
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when the cat was removed so was the o2 sensor if there was one as the y pipe was cut we cannot find a wire for the o2


skyhopper
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Apr 8, 2012, 1:21 PM

Post #14 of 20 (1311 views)
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I believe I will need to get a wiring diagram so I can determine which wire on the computer is the one for the o2 sensor


Hammer Time
Ultimate Carjunky / Moderator


Apr 8, 2012, 3:12 PM

Post #15 of 20 (1302 views)
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There should be an obvious plug or cut wires in the area.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



skyhopper
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Apr 9, 2012, 11:26 AM

Post #16 of 20 (1285 views)
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we had to put in a new y pipe as it was badly damaged when the old one was removed with the cat.There is a hole in the new pipe for a o2 sensor.As for any wire none could be found so I will have to trace back from the computer to see which harness it may have been in. Thanks again for all your efforts.!


(This post was edited by skyhopper on Apr 9, 2012, 11:27 AM)


Hammer Time
Ultimate Carjunky / Moderator


Apr 9, 2012, 12:45 PM

Post #17 of 20 (1276 views)
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The cut wire HAS to be in the area. You haven't put a different harness in it so it has to be there somewhere.

I assume we're talking about the front 0/2. The 93 didn't have a rear one.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Apr 9, 2012, 12:46 PM)


skyhopper
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Apr 10, 2012, 10:26 AM

Post #18 of 20 (1255 views)
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I will continue my search,Thanks


skyhopper
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Jul 26, 2012, 9:48 AM

Post #19 of 20 (942 views)
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The wire has been found.When it was cut it was cut as close as it could be.A new o2 sensor has been installed and the truck is running fine.
Thanks to all that replied and have given input.Keep up the great job!!!!!!!!!!!!


Hammer Time
Ultimate Carjunky / Moderator


Jul 26, 2012, 10:04 AM

Post #20 of 20 (938 views)
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Glad to hear you found it.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.





rough running 1993 chev 1500 truck


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