I am new here. hello all. 88 4runner 22ri fuel injected. a week or so ago started having trouble with idle revving up and returning to normal(cyclical) this happened only when my foot was on the brake . I rotated the tps a little, tweaked the idle adjustment a little.. ran fine for a few weeks. then the other nite it would start up fine then die in a few seconds. adjusting the TPS and idle setting screw didnt help this time. being heavy with the throttle not only doesnt help, it seems to make it die faster. i am thinking maybe vacuum, but cant keep it running long enough to try the vacuum tests i have found on this great forum. did some research today and got the codes. as best as i can tell they are:

24 - intake air temp sensor(THA)signal

31 - air flow meter signal

51 - switch condition signal

the thing is i have no idea what this info means or what to do with it...

any suggestions? ideas?

thanks in advance

tim

 

When I bought my '88 early Dec, It was getting code 31 and it was starting, but only staying running for a few seconds. What I did was unplug the Air Flow Meter (AFM, MAF, VAFM, etc, its the gray/silver thing on top of the air filter box), blew on it, plugged it back in and it started up and I haven't had a problem since. Read through this site: http://www.4crawler.com/4x4/CheapTricks/AFM/index.shtml

I can't comment about the other codes, sorry.

also, its a 22re, not a 22ri

 

4x4907

thanks for the input, but that didnt do it. maybe i posted in the wrong section. not a lot of responses. tim