Bad Temp sensor???

Joined
Sep 10, 2006
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1,028
Location
Minnesota
Bad Temp sensor??? P0402 Code

On colder days if I don't let my 1997 cruiser fully warm up before I start driving, I get a check engine light. If I let it warm up before driving (approx 10 mins) ,,,then the check engine light never comes on. Is this the sensor that triggers the check engine light?
I'm having a P0402 code. Something like excessive flow issue.
I've already replace my EGR valve and modulater.
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Joined
May 31, 2010
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Southern California
The code you have sounds incomplete, can you recheck the code and get the exact description so that we can try to diagnose the issue and also so that the others will chime in
 

TrickyT

Hate that mud...
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Apr 1, 2006
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Mill Valley, CA
Use the search feature. P0402 has probably been covered as much as any other topic. I'll bet you can find at least 50 different threads.
 
Joined
Sep 10, 2006
Messages
1,028
Location
Minnesota
Btw, I found out that the small pipe on the TB is clogged. I tried the paper clip thing, no go.
Next I will try the 2.5" 15 gauge finishing nail and small hammer trick. Gonna have to find that at the local hardware first. BUt.....
any other tricks that folks have tried and worked?
 

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