odd throttle issue
#1
odd throttle issue
I'll describe this as best I can. I'm having a problem with my NA FC that occurrs when I begin to level the accelerator in between 1500-3500 rpm. The car sounds almost like some of the spark plugs aren't firing, gets very rough sounding, and feels so as well.
I adjusted the TPS (thanks RX7 forum!) and that took care of the bouncing idle issues. now though, when I start the car i get that roughness for a minue or so, then the car raises idle to 1500 rpm idle and the roughness subsides.
when I begin to accelerate , the engien smooths as well, or the increased throttle masks the problem.
The sound of this goes from a smoth rev, (you know like a smooth hum touching your top teeth to the bottom lip) to a very rough sound when I level my speed and the throttle (try stiocking your tounge in the hum and that's pretty close, you know , a farty sound).
where shoudl I begin to resolve this issue?
I adjusted the TPS (thanks RX7 forum!) and that took care of the bouncing idle issues. now though, when I start the car i get that roughness for a minue or so, then the car raises idle to 1500 rpm idle and the roughness subsides.
when I begin to accelerate , the engien smooths as well, or the increased throttle masks the problem.
The sound of this goes from a smoth rev, (you know like a smooth hum touching your top teeth to the bottom lip) to a very rough sound when I level my speed and the throttle (try stiocking your tounge in the hum and that's pretty close, you know , a farty sound).
where shoudl I begin to resolve this issue?
#3
kill it with BOOMSTICK!
I would check the timing, but also, I would look into the TPS being bad. I had similar problems with my 7 when I got it with a bad TPS and it lost power at about 2-3k and after 3.5k it just pulled like it should. It also got only about 10mpg. hey, now that it is fixed, it only gets 13 mpg, so leave me alone
#4
alright, I'll start by checking the timing today.
My TPS seemed good on the DMM test. it was at 333 ohms , but I adjusted idle to 1k, ithen sweeps up to 5800 ohms at wot. maybe I missed a spot where it shorted?
If it's not the timing, then I'll check the TPS again.
My TPS seemed good on the DMM test. it was at 333 ohms , but I adjusted idle to 1k, ithen sweeps up to 5800 ohms at wot. maybe I missed a spot where it shorted?
If it's not the timing, then I'll check the TPS again.
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Jeff20B
1st Generation Specific (1979-1985)
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09-16-18 07:16 PM