I have developt a problem with my 94 4x4 pu 22re it runs lean when check engine light comes on intermitenly and when it does the truck will start to miss. Is it my O2 senors or is it mas sensor can some body out help?
How can I check it out.

 

hmm sounds like it could be the o2 sensor u ever change it

try take the ecu fuse out that might help not sure

if it is o2 sensor there are they are cheaper for for like 90s i dont know why try www.sparkplugs.com ngks are like 40 bucks

 

thanks for replies. after writing this question went to drive to work as I turned the motor on noticed exhaust leak but drove to work picked the replacement gasket. and installed and low and behold the miss has cleared up I don't know what happened but I like it.