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08-26-2007
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#1 |
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Join Date: Aug 2005
Location: San Fernando Valley, CA.
Posts: 896
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90- Hesitation/bucking at part/steady throttle
More than part throttle or WOT is fine. Cant hear a "miss" to speak of...
Had some real old gas in it which is about burned out, new plugs and fuel filter yesterday. Topped it off with fresh premium and drove it about 90 miles, no change RC205, 2-3 yrs old. Anyone experience this and what was your fix? Thing ran perfect when I parked it last year. If I have to pull the plenum to fix it I can kiss Vegas goodbye this year but I gotta get this done. .
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1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj. Last edited by cuisinartvette; 08-26-2007 at 02:44 AM. |
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08-26-2007
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#2 |
Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: 90- Hesitation/bucking at part/steady throttle
dont go for a drive with that wild blond girl friend of yours and she will smooth right out
 be carefull you cangoto jail if ya get caught
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08-26-2007
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#3 |
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Join Date: Aug 2005
Location: San Fernando Valley, CA.
Posts: 896
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Re: 90- Hesitation/bucking at part/steady throttle
Got it.......TPS connector is a little tweaked. Played with it for a bit and the problem is gone so it seems. Whoeer worked on it before broke the clips off so its not a real tight fit.
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1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj. |
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08-26-2007
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#4 |
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Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: 90- Hesitation/bucking at part/steady throttle
you can get a virgin watertight connector at kragens or pep boys . wont even have to cut anything as the pins just slide in .best thing to do it with is a paper clip
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08-26-2007
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#5 |
 
Join Date: Dec 2003
Location: McHenry, Il.
Posts: 6,607
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Re: 90- Hesitation/bucking at part/steady throttle
that was an easy fix
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http://i119.photobucket.com/albums/o...9mcw/SIG-2.jpg http://i119.photobucket.com/albums/o128/wb9mcw/vcm.gif "The Budget should be balanced, the Treasury should be refilled, public debt should be reduced, the arrogance of officialdom should be tempered and controlled, and the assistance to foreign lands should be curtailed, lest Rome will become bankrupt. People must again learn to work instead of living on public assistance." - Cicero, 55 BC " We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution." - Abraham Lincoln |
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08-27-2007
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#6 |
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Join Date: Aug 2005
Location: San Fernando Valley, CA.
Posts: 896
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Re: 90- Hesitation/bucking at part/steady throttle
Lucky guessing...With all the work I did this last year that was the only thing "electrical" that was moved, so focused on that. There isnt a specail tool I need to pop those pins and wires out?
Probably leave it for now, to do it the way Iwant Im better off pulling the plenum and I know where that will lead to...Have another car thats dying for some attention right now, wanna leave this one tigether. At least for awhile Fwiw, it could just be the warm weather but the car almost felt stronger with the NGK Irridium plugs, maybe its in my head, dunno...
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1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj. |
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08-28-2007
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#7 |
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Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: 90- Hesitation/bucking at part/steady throttle
your are correct the ngks are worth about 7-10 over the others and they burn cleaner too. special tool is a paper clip
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08-28-2007
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#8 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: 90- Hesitation/bucking at part/steady throttle
Quote:
Did somebody dyno the ngk's or something? |
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08-29-2007
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#9 |
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Join Date: Aug 2005
Location: San Fernando Valley, CA.
Posts: 896
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Re: 90- Hesitation/bucking at part/steady throttle
Id be curious to see some testing on this. I have never felt a diff in any car Ive owned when it comes to plugs but for some reason I truly wonder if there is, sure feels like it. If I had a little extra $$ floating around Id stick the old NGks back in and run it on the dyno, then swap em out for curiositys sake. .
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1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj. |
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08-29-2007
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#10 |
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Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: 90- Hesitation/bucking at part/steady throttle
here is how i found out .ron if you would have made it to famoso one of those times you could have seen first hand . a friend of mine that used to do r&d at jacobs told me to try different gaps for best power so armed with that and 3 spare sets of plugs 35 in the car made 2 passes then put the 40 in 2 passes improved .07 et and .40 mph then the 45s .18et and 1.1mph 50s. .08and .60mph. the improvements are off the baseline of the 35s. i did a follow up at lacr the last week they were open with the same basic results. the hp figures are what chris told me when i gave him the results . since i've been going to the strip i have been using my gtec rr to help whittle down my ets and help me figure out what works and what doesnt. like airfilters and also exhaust changes for more power. the program that downloads on to my lapp top can tell alot of things and once you have it calibrated at the strip allows one to test on a vacant road so one can test and make a change and test. in fact on the street its more accurate when usiung my drs as there is hardly any wheel spin to skew the results . i have found some rather ineresting results on shift pts and leave rpms.decide for yourself , all I know it works for me and has made the above differences in my car. i think running 11.80 at 118-119 mph for a car with my mods is pretty darn good. ranger was a big help in showing me how to learn from the info i gathered . alot of fun can be had thinking of and trying new things. as time permits i have a couple of other inhgs to try before popping the heads and sending them to corey for a little more of his magic grinding
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