please help.....have a constant miss over 5K, please read, i cant figure it out....
06-14-2002, 07:13 AM
#17
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Join Date: Dec 1969
Location: Little Rock, AR
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<font face="Verdana, Arial" size="2">Originally posted by TA/30th 1002:
Could you be loosing some timeing at the upper RPM's? ... Sorry I'm not at all familiar with this opti spark bizz!
Is there a way you can crank up your base timeing about 5-10* for diagnostic purposes? It just sounds to me like your experiencing symptoms of a warn distributor.
Ron</font>
Could you be loosing some timeing at the upper RPM's? ... Sorry I'm not at all familiar with this opti spark bizz!
Is there a way you can crank up your base timeing about 5-10* for diagnostic purposes? It just sounds to me like your experiencing symptoms of a warn distributor.
Ron</font>
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Rob B (shoebox) 95Z A4, !T96
My New Tech Link Page
06-14-2002, 02:51 PM
#18
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Location: boxboro, MA, USA
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help needed!! i need to figure this out!! ive been dying to dyno and go to the track but feel its useless with the hesitation and wouldnt be accurate anyways of how the car performs....ill be trying some ideas soon, but please keep suggesting! bill h.....hows it going on your end?
brian
brian
06-14-2002, 03:42 PM
#20
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Location: Winnipeg, Manitoba, Canada
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Have you ever had the valve covers off? have you ever adjusted the rockers? Maybe they're a bit tight if you have.
Put some Wynn's engine oil treatment in the oil.
I had a sticky valve problem that was noticable at higher rpms.
------------------
'93 Camaro Z28 Automatic with a ZL1 hood.
No bottle.
No blower.
383 cubic inch serving of horsepower...hold the rice please.
Thats all you need to know.
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Disclaimer: The opinions expressed by me are not necessarily supported or indicative of the Government of Canada or any other Federal Employee.
Put some Wynn's engine oil treatment in the oil.
I had a sticky valve problem that was noticable at higher rpms.
------------------
'93 Camaro Z28 Automatic with a ZL1 hood.
No bottle.
No blower.
383 cubic inch serving of horsepower...hold the rice please.
Thats all you need to know.
ICQ: 23984221
Gripenfelter's Homepage
Disclaimer: The opinions expressed by me are not necessarily supported or indicative of the Government of Canada or any other Federal Employee.
06-14-2002, 06:19 PM
#24
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Join Date: Feb 2000
Location: Cincinnati, OH, USA
Posts: 1,009
When you replaced the coil did you replacce the ignition module too (the black box on the heatstink above the coil)? If not, I would check/replace that.
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Solomon
What's life all about?
Silver '95 Camaro Z28 M6: 14.3 @ 98.7 - With problems, but will improve!
White '90 Cadillac deVille: 16.3 @ 81.4 - Not likely to change soon.
Learn the basics of tuning your OBDI LT1 PCM!
------------------
Solomon
What's life all about?
Silver '95 Camaro Z28 M6: 14.3 @ 98.7 - With problems, but will improve!
White '90 Cadillac deVille: 16.3 @ 81.4 - Not likely to change soon.
Learn the basics of tuning your OBDI LT1 PCM!
06-15-2002, 02:19 AM
#26
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Join Date: Mar 2002
Posts: 20
Brian,
If you get any results from the ignition module, let me know. I read another post where a guy had a similar problem and it turned out to be oil from his K&N on the electrical elements in the MAF? He cleaned it off with some spray cleaner and air dried it. Might be worth checking. Also, I see a lot of folks saying that their similar problem was a faulty EGR valve. I wonder if you just block off the EGR if that might help? I know my EGR is funky, I had to move it, did a relote setup, to fit the engine in my swap car. I might try the EGR block off mod.
I'll keep you posted of any developments.
Bill
If you get any results from the ignition module, let me know. I read another post where a guy had a similar problem and it turned out to be oil from his K&N on the electrical elements in the MAF? He cleaned it off with some spray cleaner and air dried it. Might be worth checking. Also, I see a lot of folks saying that their similar problem was a faulty EGR valve. I wonder if you just block off the EGR if that might help? I know my EGR is funky, I had to move it, did a relote setup, to fit the engine in my swap car. I might try the EGR block off mod.
I'll keep you posted of any developments.
Bill
06-15-2002, 06:30 AM
#27
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Location: boxboro, MA, USA
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i have a brand spankin new EGR.......so im hoping that aint it. thanks for the post bill, and i will keep you posted on anything and everything i try!
brian
BTW, im off to the dyno day where i WOULD have been dynoing except for this STUPID problem preventing me from doing so!
brian
BTW, im off to the dyno day where i WOULD have been dynoing except for this STUPID problem preventing me from doing so!
06-15-2002, 03:01 PM
#28
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just got back from the dyno day....if i had been on track i woulda had one of teh higher numbers of the day, and woulda pulled with the LS1 guys too, so please help me out so next time i can show em some LT1 power!! (plus i really wanted to hear my GMMG on the dyno!)
brian
brian
06-15-2002, 03:11 PM
#29
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Join Date: Jun 2001
Location: Houston, TX
Posts: 112
I'm having problems around 5k, but I don't know if its a miss that I'm experiencing. I get loud popping noises from the exhaust near the cat when it gets up there and don't know if its a miss or a clogged cat since I don't know the symptoms for either one.
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Tim
1995 White Z28
-A4,3.23, Flowmaster AT catback, 3" cutout, high flow cat, 160* stat, !TB, LT4 KM, MTI cold air, LT4 ED timing set, Trans-Go shift kit, B&M tranny cooler, performance shift switch, descreened MAF, clear corners, '69 Z/28 emblems
1989 S10 4.3L A4
the beater
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Tim
1995 White Z28
-A4,3.23, Flowmaster AT catback, 3" cutout, high flow cat, 160* stat, !TB, LT4 KM, MTI cold air, LT4 ED timing set, Trans-Go shift kit, B&M tranny cooler, performance shift switch, descreened MAF, clear corners, '69 Z/28 emblems
1989 S10 4.3L A4
the beater
