Corvette C4 Forum 1984 through 1996

1986 vette trouble

  #1  
Old 01-01-2007, 06:32 PM
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Default 1986 vette trouble

getting two codes 23 and 32 just replaced the manifold air temperature sensor 23 and now it says it is open itfluctuates between-40and 200 degrees celciusis this correct? Since I changed this sensor now I am gettin a code 32 it seems like whenever I replace one thing another one is ready. I need some advice car doesn't run bad until I get on it/.
 
  #2  
Old 01-02-2007, 09:06 PM
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Default RE: 1986 vette trouble

Air temp should be what outside air temp is on cold starts and will warm up as engine tempdoes. It sounds like the plug is not plugged in and it is a fun one to get to. Code 32 is EGR and more than likely the EGR temp switch in the tube coming off right exhaust manifold by the distributor is bad or the vacuum solenoid that controls vacuum to EGR valve. [8D]
 
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Old 01-06-2007, 03:07 AM
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Default RE: 1986 vette trouble

I have the mat sensor plugged in. where do you recomend I buy sensors at? this one is a sorenson brand made in usa.
 
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Old 01-07-2007, 10:49 AM
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Default RE: 1986 vette trouble

Sorenson is a cheap brand. I suggest you try either Carquest or someone who handles A/C Delco parts. First, check and make sure you hav vacuum on the EGR vacuum solenoid. Follow the vacuum line off you EGR valve to a solenoid bolted on the thermostat housing and check the other line on the solenoid at idle to see if you have vacuum. [8D]
 
  #5  
Old 01-16-2007, 03:53 AM
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Default RE: 1986 vette trouble

I would leave the mat sensor right where it is under the manifold, and relocate it to the air inlet ahead of the mas sensor The original position gets the mat heat saturated, and the relocated sensor is in plastic, which is almost not influencing the mat output to the computer.
 
  #6  
Old 01-21-2007, 01:25 PM
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Default RE: 1986 vette trouble

I have thought about removing the sensor with the kit, butu I heard it does nothing and the horsepower claims is false and that it might hurt performance....Just heard from others though so, I am asking what are the advantages/disadvantages of it?
 
  #7  
Old 01-21-2007, 11:40 PM
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Default RE: 1986 vette trouble

Fine tuning injection pulse width on a warmed up engine.
 
  #8  
Old 01-27-2007, 08:42 PM
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Default RE: 1986 vette trouble

that sounds good how excactly do I relocate?
 
  #9  
Old 01-27-2007, 08:45 PM
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Default RE: 1986 vette trouble

If I don't have vaccum does that mean my egr valve is shot? And where is the mixture control solenoid and the air cleaner temp sensor located?
 
  #10  
Old 01-27-2007, 08:50 PM
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Default RE: 1986 vette trouble

another thing I discoverd while hooked up to diagnostic computer if I wiggle the wires going to the mat the temperature will go up to running temp of the car maybe replace the plug?
 

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