06-01-2016 | #71 | |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,709
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Re: Low RPMs bucking
Quote:
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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06-01-2016 | #72 |
Join Date: Aug 2014
Location: Trois-Rivieres (QC)
Posts: 473
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Re: Low RPMs bucking
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06-01-2016 | #73 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,709
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Re: Low RPMs bucking
So is that when the motor started to misbehave?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
06-01-2016 | #74 | |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Low RPMs bucking
Quote:
**NOTE: When inspecting electrical connectors, be doubly certain NOT to accidentally misalign any pins as you reassemble them. And, due to the delicate nature and number of pins be especially attentive when reinstalling the long DIS connector; the one with the little bolt/hold-down screw in the center. (Ask me how I know...)
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry Last edited by Paul Workman; 06-01-2016 at 10:22 AM. |
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06-01-2016 | #75 |
Join Date: Aug 2014
Location: Trois-Rivieres (QC)
Posts: 473
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Re: Low RPMs bucking
No, I'm having the problems since I bought the car (before the mods).
Just removed plenum this morning. One of the DIS connector pin was BARELY bent, so I straightened it. No change at all. I inspected pretty much everything you mentionned Paul... Gonna get my o2 sensors changed on a lift friday morning. |
06-01-2016 | #76 | |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Low RPMs bucking
Quote:
This whole episode screams for data-logging! I feel some of your frustration at this simple issue dragging on. And, (please forgive me if I'm wrong) I feel more frustration if you haven't data-logged it yet so we could maybe see what is going on when it 'bucks'. (There are some slick programs, e.g., Tunercat, etc., you can download to a laptop. With the appropriate cabling you can watch in real time everything going and often spot the issue in just a few minutes of actual driving! No worries. When you finally nail it, you'll forget about all the trials and tribulation. And! You'll prolly know a lot more about the car than many do: nothing like hands-on experience, right? Hope you can put this to bed pretty soon.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry Last edited by Paul Workman; 06-01-2016 at 06:21 PM. Reason: "tpyo" |
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06-01-2016 | #77 | |
Join Date: Aug 2014
Location: Trois-Rivieres (QC)
Posts: 473
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Re: Low RPMs bucking
Quote:
I still got hope for my new o2 sensors on friday though, it has been mentionned a lot of times that it could be the problem. I'd love to know how to data-log this car... But I hope I won't have to do that. Thanks Paul! |
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06-01-2016 | #78 | |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Low RPMs bucking
Quote:
I have an old AutoXray scanner that I use. It is hard to explain just how simple and how efficient it is if you have the ability to hook it up and in seconds pin-point the problem(s). Unfortunately, they no longer make or support this old gem, but there are several alternatives out there that will do the job. In any case... I believe one of the FIRST recommendations was to get that puppy scanned. That might have saved a lot of this "trial and error" stuff, and you could be enjoying the car by now. Just sayin....
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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06-05-2016 | #79 | |
Join Date: Aug 2014
Location: Trois-Rivieres (QC)
Posts: 473
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Re: Low RPMs bucking
Quote:
I've got a major update for you guys. Usually, I always run the car with the heater OFF. Yesterday, I pressed AUTO and forgot to turn it OFF. The car ran pretty bad. Just look at the idle when I press the AUTO button: https://www.youtube.com/watch?v=ZCEla2ShgF4 May I repeat: -I had a cluster flickering problem. -Alternator was changed 1 day before I bought the car. -3 weeks ago, I checked the alternator voltage when the car was cold. It was 14.3V. Checked it yesterday when the car was fully warmed, it was 13.8V. I believe this is perfectly normal. -Tensioner pulley is loose, at idle only. I'm not sure which way to go now. And by the way, local garage couldn't change o2 sensors, because I told you local garages can't help me. They can only work on Cavaliers and stuff like that. |
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06-05-2016 | #80 |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Low RPMs bucking
Well, my sense of it is: (1) it isn't anything too big, but (2) it is beyond your current knowledge/(ZR-1) expertise.
I hate to see anyone struggle so. I'm thinking that perhaps you should consider either taking it to someone that IS ZR-1 savvy, or paying someone that is skilled to visit your location w/ tools in hand. If neither of these are going to work, but you have reasonable mechanical skills, then I suggest you pick someone that is knowledgeable that will be willing to work with you, off-line. By "huddling" w/ someone off-line you have better continuity of thought and the troubleshooting process and less chance of distractions - albeit in the best of intentions. Just a thought.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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