Smoooooth Idles possible?
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Smoooooth Idles possible?
For you fellows with stock 350 tune ports, is your idle smooth? I suppose thats a relative idea, my idea or smooth is not bein able to feel the idle at all. Mine isnt, I do have a cat back 3", but my idle has never been perfectly smooth. I've got a 120k on her. Is the rougher idle just with age? Or is there stuff thats causing it. I've had a recent tune up. I recently adjusted my TPS to .54 volts with like a 2 dollar digital meter, so I hope its right. Thanks in advance! and Happy holidaysss! - Tom
Thanks! 
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From: Haverhill, Ma
Car: Corvette
Engine: 5.7
Transmission: 700R4
well if something is wrong. you'll definitly know it. i have never had a "ghost" problem with my iroc. if its broke it lets itself be known
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From: Costal Alabama
Car: 1989 Iroc-Z
Engine: 350, ZZ4 equivalent
Transmission: Pro-Built Road Race 700R4
Axle/Gears: 3.23 Dana 44
I don’t think you are going to get a perfectly smooth idle with the stock 350. It is normal for you to be able to feel the idle. Drop a nice big cam in and the idle will give you a nice "vibrating chair" feeling.
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From: SYLVANIA,OHIO,USA
Car: 89 Formula
Ya i was wondering the same thing, my 85 TPI 305 dont really have a smooth ideal either. if iam in drive and stopped at a light you can see on the tach and feel it that its not smooth.
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From: Haverhill, Ma
Car: Corvette
Engine: 5.7
Transmission: 700R4
if the tach moves up and down at idle i beleive its, check the tps voltage and clean it or something. blah its so simple i dont even know it. check the tech section im sure its in there. plugs etc etc. thats all tune stuff
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From: Lakewood, CO
Car: 1994 Jeep Wrangler
Originally posted by Duke901
Ya i was wondering the same thing, my 85 TPI 305 dont really have a smooth ideal either. if iam in drive and stopped at a light you can see on the tach and feel it that its not smooth.
Ya i was wondering the same thing, my 85 TPI 305 dont really have a smooth ideal either. if iam in drive and stopped at a light you can see on the tach and feel it that its not smooth.
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From: Jacksonville, NC
Car: Guess
Engine: Crazy 8
Transmission: So close to being a manual I can taste it
To get a good smooth idle you need plenty of vacuum. Check those rubber hoses. I had a tiny pin hole in my line to the brake master and once it was replaced my idle improved noticeably. It was not horrible before but not what it used to be if you know what I mean.
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From: Randolph,MA
Ugh, so I went and set my TPS to .54 volts with a $2 digital meter now I got awful hesitation under 2000 rpm! 
Is the mter not giving an acurate reading or did it blow up? At first when i connected the test leads i put them in terminals A and C not A and B... 
maybe it shorted? Doh! What do you think? Thanks
- Tom
Is the mter not giving an acurate reading or did it blow up? At first when i connected the test leads i put them in terminals A and C not A and B... maybe it shorted? Doh! What do you think? Thanks- Tom
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From: Haverhill, Ma
Car: Corvette
Engine: 5.7
Transmission: 700R4
i have no clue on that. never messed with any of the electronics. which could prob be figured out by my post about the tps before lol
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