Whats wrong with my supra w/video

[4U2QUIK]

it started doing this about 3 days ago. (rpm's go up and down in a cycle while coasting)
I just happened to have my camera on me when it started doing this.
check it out


It does this randomly when coasting, my idle seems to be high now, and I just noticed that my fuel pump in whining earlier today. I suspect it's the pump, but I wanted a few more opinions just in case I'm wrong.

 

[subjug4tor]

I had a similar problem when my TPS was slightly out of adjustment. if I down shifted and cruised over 2500 rpm or so, no problem, but when doing it at lower rpm like in your video, it would constantly go up and down. I adjusted the TPS as per the TSRM and it fixed it right up. Check your codes, a code 41 and 51 are both TPS related.

 

[4U2QUIK]

I was going to check the codes in the next day or so.
BTW it's an autotragic transmission.

 

[jetjock]

Code 51, but was beaten to it....

 

[a_sesshoumaru]

hey my father`s galant is doing the same, i think this might help me too

 

[Supraboy89]

I had a similar problem when my TPS was slightly out of adjustment. if I down shifted and cruised over 2500 rpm or so, no problem, but when doing it at lower rpm like in your video, it would constantly go up and down. I adjusted the TPS as per the TSRM and it fixed it right up. Check your codes, a code 41 and 51 are both TPS related.

i very much agree. tps out of adustment

 

[jdemara]

what he said ^

 

[Pantaloon007]

Thats a common toyota problem. Every '80s model toyota Ive owned had the TPS jitter-idle and needed adj. You need an ohmmeter to do it.

 

[4U2QUIK]

thanks guys, I'll check the tsrm and grab my multimeter at break to check it out.

 

[Jaguar_5]

My TPS had no continuity, at all, under any conditions... :biglaugh:

You will also need a feeler gauge as well as the dmm