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i have a 1992 chevy blazer 4x4. check engine light came ...

Sent to Chevy Experts January 6 2008 at 2:28 PM
   

i have a 1992 chevy blazer 4x4. check engine light came on yesterday, after i turned off the engine, it went off.i use this vehicle to deliver the mail in. it blows black soot out of the tail pipe when i start it. has had new plugs wires almost all is new. it also smells like something is burning when my heat is on. i thought it was catalytic converter, but i took it to a auto zone and they plugged it in and it says altitude sensor, they did not know what it was. so what is a altitude sensor? is it a oxygen sensor? please help, thanks, terry anne

 

Optional Information:
1992 blazer 4x4 taho 4.3

Already Tried:
has almost all new parts except water pump, o2 sensor was put in last year.

Customer (name blocked for privacy)
Time Left: 733047 days and 15 hours   Status:  Awaiting Expert Reply   Value:  $15
Answer
January 6 2008 at 2:32 PM (4 minutes and 5 seconds later)
         
ACCEPTEDCheck Mark
They probably mean a MAP sensor (manifold absolute pressure).What is the 8th digit of the veh ident #?
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CCTMSTR -- GM Certified Master Technician -- 100% Positive Feedback on 217 Chevy Accepts
GM Master Technician.ASE Master.Advanced Level L1. NV State G2 Emission Inspector
Reply
January 6 2008 at 2:41 PM (8 minutes and 19 seconds later)
         
hi thanks for being so quick. i will return with 8th digit number in 3 minutes, i will be back. hold on, it is a z or a 2
Customer (name blocked for privacy)
Reply
January 6 2008 at 2:45 PM (4 minutes and 5 seconds later)
         
it is a z or a 2 is the 8th digit. thanks,
Customer (name blocked for privacy)
Answer
January 6 2008 at 2:50 PM (5 minutes and 43 seconds later)
         
ACCEPTEDCheck Mark
(Z) is the digit 4.3 LTR.OK if it is/was a MAP code you can check the vacuum line from the MAP sensor to the intake manifold The MAP sensor is a black rectangle sensor,it will usually have a green (3) wire connector attached to it with a vacuum line at the bottom.Check the vacuum line for being brittle,split or collasped
Picture
CCTMSTR -- GM Certified Master Technician -- 100% Positive Feedback on 217 Chevy Accepts
GM Master Technician.ASE Master.Advanced Level L1. NV State G2 Emission Inspector
Answer
January 6 2008 at 2:56 PM (5 minutes and 39 seconds later)
         
REPLIEDCheck Mark
Did you get the post?
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CCTMSTR -- GM Certified Master Technician -- 100% Positive Feedback on 217 Chevy Accepts
GM Master Technician.ASE Master.Advanced Level L1. NV State G2 Emission Inspector
Reply
January 6 2008 at 3:14 PM (17 minutes and 27 seconds later)
         
Reply to cctmstr's Post: thank you great feedback was left, and your payment, but some how i paid it twice. do not know what happened there.
Customer (name blocked for privacy)
Answer
January 6 2008 at 3:15 PM (1 minute and 40 seconds later)
         
REPLIEDCheck Mark
Ask a moderator to refund 1 payment
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CCTMSTR -- GM Certified Master Technician -- 100% Positive Feedback on 217 Chevy Accepts
GM Master Technician.ASE Master.Advanced Level L1. NV State G2 Emission Inspector
Reply
January 6 2008 at 3:18 PM (2 minutes and 15 seconds later)
         
Reply to cctmstr's Post: i will do that. thanks, once again, a very smart man.... god bless you, terry
Customer (name blocked for privacy)

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