A LITTLE HELP!!

[95SLOW5.0]

for the past couple days my car started running like shit also started to idle up and down not too much but enough to notice it i was thinking it was maybe the maf so i went and got one at advance i installed it and didnt notice a change so i took it back the problem seems to worsen as the engine warms up i was looking through some old forums and i wanna say my oxygen sensors could be the problem but i dont have a cel can they be shot without throwing a cel. i have never changed them.. any advice would really help thanks in advance.....

 

[tommybunz]

clean MAF, clean iac valve, reset TPS

 

[95SLOW5.0]

i changed the maf and that was not the problem...

 

[tommybunz]

clean iac valve and reset TPS sensor dont change it

 

[95SLOW5.0]

my tps sensor is also new today i took out all the plugs checked the gap that was good i also noticed when i pull the hose that connects the pcv to lower intake out the idle problem goes away so i changed it and it seemed to solve the problem now when u hit the gas it well accelerate then come back down and jump up on its own anybody have any idea?????

 

[tommybunz]

drill out the tps holes and set the voltage at .96 with car on but not started

 

[toyman]

drill out the tps holes and set the voltage at .96 with car on but not started

Not necessary on the 94-95's. The PCM reads the at rest TPS volts and sets that as the closed throttle position within the specs of about .7v to 1.25v.

Not clear if the OP just replaced the hose or the whole PCV. Still behaving like it's a vacuum leak.

 

[tommybunz]

i dont know about your 95 but it worked on mine for sure. no hanging idle or anything when it used to do that.

 

[toyman]

i dont know about your 95 but it worked on mine for sure. no hanging idle or anything when it used to do that.

And the output volts were within the range indicated. As I indicated the PCM on the 94-95 were different from the 93 and earlier setups, where you wanted to set the TPS at .98v.