1990 Throttle hesistation - Page 18 - ZR-1 Net Registry Forums

Dynomite · 01-23-2014

Quote:

Originally Posted by Schrade

Alternator IN, withOUT moving a THING - not the upper rear alt mount bracket, plenum, anything.

Time to do a little editing in 'Solutions' there Mr C!!! Vids of removal, and of re-install are uploading to Y/T now.

First one ever to document Alternator removal with plenum in place???

OK......You DID remove the Air Horn and Throttle Body

Was either of those removals necessary?

Now given I can remove the Plenum with Air Horn and TB attached in 10 minutes Removing Plenum (including the 10 minute Plenum Removal)

I will post a Link in -Solutions- In the ZR-1 ELECTRICAL Section as the First Tip under BATTERY AND CHARGING

After you post this Video in YOUR OWN Post or I will just leave it here. Left Click on Photo to watch Schrade Remove his............................................... Alternator

I always had my Plenum Off so never tried removing the Alternator by itself without removing anything else.....besides if I had to.......just looking at it...prolly would not have tried it anyway without removing the Plenum

Chuckie needs some Chili to warm up....

I did remove the Heads one time with engine in car and after Heads were removed I could almost lift out by hand the rest. So pulled the rest simply because Timing the Engine is a lot simpler engine out of car.

Schrade · 01-24-2014

Quote:

Originally Posted by Dynomite

OK......You DID remove the Air Horn and Throttle Body

Was either of those removals necessary?

Don't know there Cliff; they were both still removed, but I seriously doubt that you could pull the alt with TB in. You really need to see that lower center flange of the alt, to guide it into the recess above the WP.

How do you embed video in your post?

Quote:

Chuckie needs some Chili to warm up....

Chili? Nuh-uh; need that violin player who plays for your Lord of the Dance outfit!!!

She could Warm my Global / Change my Climate better than a bottle of Guinny Stout ethylene Lager

===================================

Now where's Dom here - when I start with DM logging here, do I need to have the Sec power key on? Or is it already defaulted on, with Marc's chip for sec vac delete?

Dynomite · 01-24-2014

Quote:

Originally Posted by Schrade

How do you embed video in your post?

I copy your video to my puter and then upload same to Photobucket....then copy IMG Codes and paste into post.

Or more Simply for you now......Right Click on my imbedded Video copy of your video and Left Click Properties....Copy URL Address and paste into your post as IMG Code....

There....now the secret is out

Schrade · 01-25-2014

Looks like someone HAS done removal without plenum pull, but there's always room for improvement...

install vid...

Is this bracket the same on my '90, as on Geof180's LT5??? Sure wish someone would have mentioned it to me here...

Anyway, temps got above freezing, thanks to a little Global Warming, and I played with DM a little here.

Started this thing up, and it fired IMMEDIATELY

.

Once it went CL, I did a vid showing incremental increases with the throttle stop screw, and DM readout in the foreground. She's running perfect, although it still shows the hesitation once it goes above 1.6% TO - although it doesn't manifest as a 'hesitation'; more likely just irregular RPM's...

Working on .csv formatted file now here........................

GOLDCYLON · 01-25-2014

I have done it with just the air horn removal. It's easier with the TB out of the way but I only had an Air Horn gasket when my Alternator crapped out.

Yes the smaller alt bracket is the same from MY90 - MY95

XfireZ51 · 01-25-2014

I cut a slot into the bracket bolted between the IH and the back of the alternator.

Schrade · 01-25-2014

Quote:

Originally Posted by XfireZ51

I cut a slot into the bracket bolted between the IH and the back of the alternator.

What's up Dom...

Not sure I'm followin' ya' on a slot on that rear bracket - what was hitting the bracket when you did it? Bat+ post?

And how do I send ya' the DM .csv file?

And what values can I DELETE here:

Rec Num
Frame Time
Time Stamp
2nd Inj Fuel
TPS %
TPS Volts
STerm-LC
STerm-RC
Fuel Trim Cell
IAC Pos
Idle RPM
Ign Volts
Inj A FPW
Inj B FPW
Inj BPW D-TPS
Inj BPW D-TPS
Inj BPW Left
Inj BPW Right
Inj DC Left Inj DC Right
Knock Count
Left O2 mV
LO2 CCNT
LTerm-LC
LTerm-LP
LTerm-RC
LTerm-RP
MAP
PT Vacuum
Right O2 mV
RO2 CCNT

And any others I need to INCLUDE???

XfireZ51 · 01-25-2014

Just send the entire .csv file.

The black 90d bracket with the IH bolt thru it. Can't move the bracket without completely removing the IH BOLT and that won't happen because it runs into the plenum.

Quote:

Originally Posted by Schrade

What's up Dom...

Not sure I'm followin' ya' on a slot on that rear bracket - what was hitting the bracket when you did it? Bat+ post?

And how do I send ya' the DM .csv file?

And what values can I DELETE here:

Rec Num
Frame Time
Time Stamp
2nd Inj Fuel
TPS %
TPS Volts
STerm-LC
STerm-RC
Fuel Trim Cell
IAC Pos
Idle RPM
Ign Volts
Inj A FPW
Inj B FPW
Inj BPW D-TPS
Inj BPW D-TPS
Inj BPW Left
Inj BPW Right
Inj DC Left Inj DC Right
Knock Count
Left O2 mV
LO2 CCNT
LTerm-LC
LTerm-LP
LTerm-RC
LTerm-RP
MAP
PT Vacuum
Right O2 mV
RO2 CCNT

And any others I need to INCLUDE???

Schrade · 01-26-2014

This vid done with SLOW incremental increases in throttle, using throttle stop screw. Note the erratic reading at about 1:57...

http://www.youtube.com/watch?v=ahqv0vs1Y1o

http://www.youtube.com/watch?v=8qDwChs9KMw

Franke · 01-26-2014

I see what you are saying. I'm a bit concerned about the right bank fuel (ST/LT) trim not changing much. I wonder if your right bank O2 sensor is lazy or malfunctioning.

01-25-2014	#174
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Re: 1990 Throttle hesistation Looks like someone HAS done removal without plenum pull, but there's always room for improvement... install vid... Is this bracket the same on my '90, as on Geof180's LT5??? Sure wish someone would have mentioned it to me here... Anyway, temps got above freezing, thanks to a little Global Warming, and I played with DM a little here. Started this thing up, and it fired IMMEDIATELY . Once it went CL, I did a vid showing incremental increases with the throttle stop screw, and DM readout in the foreground. She's running perfect, although it still shows the hesitation once it goes above 1.6% TO - although it doesn't manifest as a 'hesitation'; more likely just irregular RPM's... Working on .csv formatted file now here........................ __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG]

01-25-2014	#175
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,153	Re: 1990 Throttle hesistation I have done it with just the air horn removal. It's easier with the TB out of the way but I only had an Air Horn gasket when my Alternator crapped out. Yes the smaller alt bracket is the same from MY90 - MY95 __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V Last edited by GOLDCYLON; 01-25-2014 at 07:25 PM.

01-25-2014	#176
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,677	Re: 1990 Throttle hesistation I cut a slot into the bracket bolted between the IH and the back of the alternator. __________________ [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

01-26-2014	#179
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Re: 1990 Throttle hesistation This vid done with SLOW incremental increases in throttle, using throttle stop screw. Note the erratic reading at about 1:57... http://www.youtube.com/watch?v=ahqv0vs1Y1o http://www.youtube.com/watch?v=8qDwChs9KMw __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG] Last edited by Schrade; 02-09-2014 at 09:37 AM.

01-26-2014	#180
Franke Join Date: May 2013 Location: Beaver, PA Posts: 516	Re: 1990 Throttle hesistation I see what you are saying. I'm a bit concerned about the right bank fuel (ST/LT) trim not changing much. I wonder if your right bank O2 sensor is lazy or malfunctioning. Last edited by Franke; 01-26-2014 at 10:18 PM.