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code 21 keeps coming up at wot

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Old Nov 16, 2003 | 11:38 AM
  #1  
NEOMASTERZ28's Avatar
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From: Kissimmee,FL/Pennsauken,nj
Car: 85 z28
Engine: 305 TPI
Transmission: 700R4
code 21 keeps coming up at wot

this problem is in conjunction with all the other problmes ive had in previous posts,

any time i punch it at wot an when it shifts to 2nd gear the check eng. light comes on untill i let off the gas the the light goes off.

this is the 3rd tps that is on there, 1st one gave me a light, he 2nd did not give me a light, now this 1 gives me a light.

and its only at wot, when my tq loss accurs around 3000-4500

i think this is all in conjuction,with my tq and power loss.
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Old Nov 18, 2003 | 08:39 PM
  #2  
llvll4l2c91350's Avatar
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check your connection
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Old Nov 18, 2003 | 09:43 PM
  #3  
bigals87z28's Avatar
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Joined: Nov 2001
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From: Ocean, NJ
Car: Check The Sig
-Ok... turn the ignition off and clear all codes
-then disconnect the sensor
-start engine and idle in neutral for one min. or untill SES light comes on.
-Turn the ignition to "on"(not start) with the engine off
-ground the terminal

--If you get code 22
-Probe the TPS sensor ground circut at the harness connector with test lights to 12 volts.
-If a light comes on its a faulty TPS connection or sensor
-IF the light is off, open sensor ground circut, faulty connection or faulty ecm.

-If you get code 21 check the connnector for a short to a voltage source or it could be a faulty ecm.
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Old Nov 22, 2003 | 02:17 AM
  #4  
NEOMASTERZ28's Avatar
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From: Kissimmee,FL/Pennsauken,nj
Car: 85 z28
Engine: 305 TPI
Transmission: 700R4
ttt
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