97 tahoe p0102 p0340

[Joseph brown]

I have a 97 tahoe i put a new transmission in it drove it for a day and it started bogging down i put the scanner on it and got p0102 and p0340. Now there is another post on here about the same thing so i checked very thing that was said and found the engine 1 fuse was blown i replaced it and no change any suggestions on what to do next

 

[SunlitComet]

any other details then it bogging down on you?

 

[Joseph brown]

If I give it any gas it dies that's the best way i know to explain it

 

[SunlitComet]

unplug your maf while running and see if it gets worse or works around it once the code pops the light on. you may need to drive it with som gas to see if it takes effect. did the codes come back before and which ones

 

[SunlitComet]

some other things that run off that fuse and may cause a high resistance short are the heated o2 sensors so perhaps swhile you are at it check there wiring to see if any is damaged that might blow the fuse or drag the voltage on those fused sensor down so bad you may be sending bad data to the pcm causing your grief.

 

[DallasTahoe]

some other things that run off that fuse and may cause a high resistance short are the heated o2 sensors so perhaps swhile you are at it check there wiring to see if any is damaged that might blow the fuse or drag the voltage on those fused sensor down so bad you may be sending bad data to the pcm causing your grief.

I'm having the kinda the same issue, today (while out of town no less) I popped both of those codes, and that eng1 fuse is blowing. You mentioned the 02 sensor can cause it, but wouldn't that cause a code for the O2 sensor as well? Lately I have gotten a code for O2 heater, will the sensor still function and not throw a code if it's causing the other two codes?? Please help I'm nowhere close to home!!!


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