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10-16-2013
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#31 | ||
  
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Throttle hesitation diagnostics?
I would get a new PCV Connector from Jerry that fits tight and you do not have to concern yourself with it popping off again. That PCV connector you are cleaning has had its day
 Oh....and when you get everything out of the valley......I started with a scraper........then degreaser....then HOT high pressure washer......then steel wool .....then more degreaser and then a final HOT high pressure washer.....and blow on that valley drain with compressed air after first squirting degreaser from the top down. Quote:
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Left Clickable links  -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 10-16-2013 at 12:53 AM. |
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10-16-2013
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#32 |
 Join Date: May 2013
Location: Beaver, PA
Posts: 516
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Re: Throttle hesitation diagnostics?
Ignition coils I believe. Looks like they were replaced at some time. Measure them ohm wise. I agree with Dyno. I bought new rubber fitting from Jerry and it is nice and tight. Be sure to check the rubber pipe for cracks by flexing it. I had 5 holes in mine.
Last edited by Franke; 10-16-2013 at 12:45 AM. |
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10-16-2013
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#33 | |
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Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Throttle hesitation diagnostics?
OK....have to ask.....who in their right mind would work on an LT5 during initial restoration wearing a nice White Sweat Shirt.....
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10-16-2013
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#34 |
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Join Date: May 2013
Location: Beaver, PA
Posts: 516
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Re: Throttle hesitation diagnostics?
Dyno, notice the fingernails too--- no dirt. He must be a surgeon. White sweat shirt, no dirt.
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10-16-2013
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#35 | |
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Join Date: Dec 2012
Location: NC
Posts: 1,786
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Re: Throttle hesitation diagnostics?
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That's a good one! And you'll know who's NOT right mind when you see it dry-fit all together, and then UN-plugged AGAIN.No dirt? That's FILTHY. Cliff's is clean http://i17.photobucket.com/albums/b7...lpacdetail.jpg Clean as you go. Schrade's rule of  . Sterile Spic n Span clean. Probably get it all perfect, and never find out what made the 'Hesitation'. WAH.  Makin' a list for Jerry's (and checkin' it twice)... No di-electric grease on the Coil Pac prongs?
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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] |
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10-16-2013
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#36 | ||
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Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Photos
Keep up the great photo coverage.......
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My photos are stored on photobucket and I recently had to upgrade to Photobucket Pro because of a bandwidth issue. But then again I have over a thousand photos viewed on a couple Forums I have three photos (total) of a Semi Truck and Grain Cart in a corn field stored on this web site (in my public profile) which someone complained that was poor use of bandwidth one time but you know how that goes. I used those photos to show that alternative of using this Forum as a photo host vice Photobucket and to also show photo sizing (those three photos I have stored here (Public Profile) are of three different sizes if you click on them). Quote:
 I think I destroyed about three red sweat shirts along the way with oil stains I could not remove I buy Simple Green in BULK (for clothes as well as hands). 1990 LT5  1991 LT5  1990 L98 
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Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 10-16-2013 at 07:43 AM. |
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10-16-2013
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#37 |
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Join Date: May 2013
Location: Beaver, PA
Posts: 516
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Re: Throttle hesitation diagnostics?
Nice engine bay pics dyno. Did you do all of the work?
Schrade, do you remember if your engine hesitation also occurs on open loop 1.6% - 2.4% TPS (cold engine) as well as closed loop (hot engine)? |
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10-16-2013
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#38 | |
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Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,797
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Re: Throttle hesitation diagnostics?
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10-16-2013
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#39 | |
   
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Throttle hesitation diagnostics?
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The dielectric grease wont hurt anything and is not a bad idea. Any thoughts of spraying the plenum since you spent all that time cleaning it? I know your chasing another problem but you will hate yourself for not doing it while you are there. D
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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 |
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10-16-2013
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#40 |
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Join Date: May 2013
Location: Beaver, PA
Posts: 516
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Re: Throttle hesitation diagnostics?
Schrade, do you know if those are the original injectors? Reason I ask is mine looked just like those before I replaced them with SS.
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Linear Mode
