Diagnostic Codes 32, 35 and 22 on 1995 Blazer
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Joined: Dec 2021
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From: California
Diagnostic Codes 32, 35 and 22 on 1995 Blazer
Hi, I am new here. I will try to explain what's going on as best I can.
I have a 1995 Blazer, 4.3 engine code W, OBD 1, with 220,000 miles on it. For a few weeks now I have been experiencing a rough idle when in gear and reverse. When in park, the idle gets a little better. There is slight exhaust smell and louder than usual noise coming from the muffler. I discovered and fixed a gasket leak between the catalytic converter and the muffler. When the engine is running the muffler is a little noisy and I can hear some type of slight ticking or clicking in the engine compartment area. It is not a very loud sound, and I can't tell where it is coming from. A few weeks ago, the check engine light came on for about 10 minutes, then it went away and has not come on since then. I know there is an air leak around the intake cover. I'm pretty sure that is caused by age. I plan on replacing the intake gasket within the next day or two. Until then I really need to figure out what is causing the code to come up.
I hooked up the code reader and initially I got three codes 32 EGR failure, Code 35 Idle speed error, and Code 22 Throttle position sensor too low. I cleaned the EGR valve, cleaned the IAC (Idle air control valve). The plugs, wires and cap are all fairly new (4 months old). After cleaning the EGR and IAC, I cleared the codes. Now the only code that is coming up is Code 35, Idle speed error. I don't understand what the problem could be. Is this code telling me something is failing? Do I need to look for something specific? I am not sure what to do next. I appreciate any suggestions. I don't have a bunch of money to waste on guessing, so I am asking for help. It seems like there are a lot of good guys on this site that know more than me on these trucks. Thanks in advance.
I have a 1995 Blazer, 4.3 engine code W, OBD 1, with 220,000 miles on it. For a few weeks now I have been experiencing a rough idle when in gear and reverse. When in park, the idle gets a little better. There is slight exhaust smell and louder than usual noise coming from the muffler. I discovered and fixed a gasket leak between the catalytic converter and the muffler. When the engine is running the muffler is a little noisy and I can hear some type of slight ticking or clicking in the engine compartment area. It is not a very loud sound, and I can't tell where it is coming from. A few weeks ago, the check engine light came on for about 10 minutes, then it went away and has not come on since then. I know there is an air leak around the intake cover. I'm pretty sure that is caused by age. I plan on replacing the intake gasket within the next day or two. Until then I really need to figure out what is causing the code to come up.
I hooked up the code reader and initially I got three codes 32 EGR failure, Code 35 Idle speed error, and Code 22 Throttle position sensor too low. I cleaned the EGR valve, cleaned the IAC (Idle air control valve). The plugs, wires and cap are all fairly new (4 months old). After cleaning the EGR and IAC, I cleared the codes. Now the only code that is coming up is Code 35, Idle speed error. I don't understand what the problem could be. Is this code telling me something is failing? Do I need to look for something specific? I am not sure what to do next. I appreciate any suggestions. I don't have a bunch of money to waste on guessing, so I am asking for help. It seems like there are a lot of good guys on this site that know more than me on these trucks. Thanks in advance.
BF Veteran
Joined: Jan 2007
Posts: 4,632
From: Florida
Code 32 = EGR valve/circuit issue. Start by cleaning the valve/passages.
Code 35 = Idle air control valve. Same thing
Code 22 = TPS sensor/circuit problem. Start by checking the 5v ref voltage between the gray and black wire with the sensor plugged in.
George
Code 35 = Idle air control valve. Same thing
Code 22 = TPS sensor/circuit problem. Start by checking the 5v ref voltage between the gray and black wire with the sensor plugged in.
George
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