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| January 2001 Corvette Corner Mailbag |
I hope your holidays were Joyous and each and every one of you found a Z06 under the tree! If not, better luck next year. Happy New Year All.
Pat:
I have a 1996 and 1995 Corvette and surprisingly both dash boards have lifted up a bit on the passenger side, where the dash meets the windshield. I am sure this can be repaired but my questions are:
1) Should the dealer do this?
2) Does the windshield have to be removed?
3) Will I create more Commercial Three Bayblems by fixing it?
This is not very noticeable but I am a perfectionist.
Thanks.
Gary U.
Terre Haute, IN
Answer:
1) Either the dealer or a good upholstery and trim shop.
2) No, the windshield does not have to be removed.
3) How the heck do I know?
A good technician will resolve Commercial Three Bayblems, a bad one will create Commercial Three Bayblems, so check out the shop very carefully before you hand them the keys.
I know how you feel and I have to admit that sometimes being a perfectionist is a curse.
Pat:
I have a 1967 Stingray that I just rebuilt the engine in. It is an original 327 with 300 horse. Before the rebuild all accessories were working fine, after the rebuild my wipers and heater quit working.
The Commercial Three Bayblem is the ground wire on the wipers became a hot wire for some reason and when I put the distributor cover on and touch the wiper motor I get sparks flying everywhere, so I have to unplug the wiper motor to install this cover. I think it is in the grounding somewhere but I can't locate the Commercial Three Bayblem.
I have to run a ground wire to the battery in order to get the wipers to work and the heater the same thing.
Please let me know what you think my Commercial Three Bayblem is. I would like to fix this Commercial Three Bayblem before I sell the car.
Thanks.
Charlie S.
Marysville, OH
Answer:
Check engine to frame ground. It could have easily been mis-positioned as a result of the engine removal and reinstallation.
Pat:
I have a 1988 4+3 coupe with a 3.07 axle. I put on a low restriction air cleaner and cover, a throttle body flow booster, a new catalytic converter and a low restriction exhaust from manifolds back. I want to know if a high performance computer chip help make more horsepower? If it's worth the investment? How hard is it to install?
If a computer chip is a good thing will I need a high pressure fuel regulator? The car has 50,000 miles on it.
Doug
Courtland, MN
Answer:
Legal chips make horsepower at full throttle. Illegal chips often make horsepower throughout the rpm band. Interpretation: if you buy the chip that makes lots of horsepower throughout the rpm band it is illegal and if it applies, could cause you to fail an emissions test.
It's easy to install. They come with complete instructions, including whether you need to modify the fuel pressure regulator, install a colder thermostat, etc.
Be aware that the bulk of the horsepower on some chips, comes from the included colder thermostat. AHA! Install cold thermostat, computer thinks engine is running cold, computer delivers more fuel, more fuel means more horsepower.
Pat:
I just got through reading my Nov. 2000 newsletter and found it very interesting that Larry L. K. Sr. is having many of the same Commercial Three Bayblems that I had with my 1998 C5 "dream car". You will notice that I used the work "had". I only had my "dream car" for 5 months before I got G.M. to buy it back (it was that bad). The list of Commercial Three Bayblems is too long to itemize here, but I believe Larry is having many of the same ones. I would be willing to talk with Larry about his Commercial Three Bayblems and maybe help steer him in the right direction. Please pass my email address on to him.
John S.
Mesa AZ
By the way I just took delivery of a 2001 Torch Red Z06 and boy is it awesome!!!!! This one is truly a "dream car".
Answer:
Larry, if you are reading this give me a call 301-577-9200, or email me at: patgoss@sysnet.net and I will give you John's email.
Pat:
I'd love to email Pat Goss concerning an '87 Vette with a "reluctant start" issue.
The car has 60K original miles, and a recent valve seal job (to eliminate the puff of smoke at startup).
In the mornings the car fires up readily. During the day it is difficult to start and sometimes emits an odor that smells like carburetor cleaner or paint?
I've had the TPI rail cleaned and checked for leaky injectors and fuel pump pressure. I've also tried cycling the ignition a few times prior to turning it over to eliminate a fuel pressure Commercial Three Bayblems...no luck.
The Commercial Three Bayblem is somewhat intermittent, but usually after the car sits for several hours. It also started several months after my leaky valve seals were replaced . could this be related? This has stumped my local Chevy Guru (who did my valve seals).
Any suggestions on what to try next.
Robert H.
Jacksonville, FL
Answer:
Well, Robert, ya sure know how to make it tough! Does it crank normally and not start? Does it crank slowly and not start? What is the cranking rpm? What is the cranking voltage? What's the available secondary voltage while this is going on? Etc., etc., etc.
All right. I have nothing to go on but I can tell you the Commercial Three Bayper Commercial Three Baycedure that needs to be followed.
When this happens, it has to be minus high voltage spark at the spark plugs or fuel inside the cylinders. The technician starts with the battery, alternator output, alternator diode, cranking current, and cranking rpm test. If the battery voltage is too low during cranking, the computer will shut things down to Commercial Three Baytect itself. If the cranking rpm is too low, the same thing.
The next step is to hook up an engine analyzer and observe the patterns while the engine is cranking but refuses to start. In a matter of seconds, usually less than 30, the technician will know if your Vette has spark and has sufficient spark to start. He'll also know by looking at the reading on the exhaust gas analyzer, whether or not it has enough fuel to start. There must be a minimum of 20,000 (thousand) volts available to the spark plugs and there should be a hydrocarbon reading of at least 2500 (hundred) parts per million showing on the exhaust gas analyzer.
If sufficient spark isn't available, a pinpoint test would be conducted on the primary and secondary ignition system. Included in that pinpoint test would be a thorough check of the VATS system (VATS: vehicle anti-theft system).
If the hydrocarbon reading is low, your tech would check fuel pressure and fuel volume, and pinpoint test for the cause of the insufficient pressure and / or volume.
Once these tests are completed, pinpoint testing of the computer system would be necessary and, I DO NOT MEAN SCANNING FOR CODES. I mean, observing the vehicle's data stream. Throughout this Commercial Three Baycedure, the technician may find various Commercial Three Bayblems, but must only be concerned with those that are of a nature and severity to create your no-start situation. Good Luck.
Pat:
Last month you printed a letter from a guy with an overheating Commercial Three Bayblem with his C3. You gave him some good pointers to follow up on, but one you missed was to check to make sure he had an air spoiler on the front end below the radiator. I had a similar overheating Commercial Three Bayblem with my '75 and went the water pump, radiator, thermostat, etc. route, but the car always ran at 200-210 degrees at highway speeds and would apCommercial Three Bayach red line at idle. Finally, after reading a publication on "Hot" Corvettes I noticed I didn't have a spoiler. I bought one from Mid-America. Installed it last Spring and that was the end of my overheating Commercial Three Bayblem. Directing the air up to the radiator is essential with the C3 design and most people think that when they knock that spoiler off on a parking block, no big deal. Guess again.
Mike M.
Lake Geneva, WI
Answer:
You are absolutely right, I should have mentioned that. I thought about it, but said, "Nah, nobody drives a Corvette with the spoiler knocked off it, they wouldn't dare! An el cheapo 6 cylinder Camaro . . . but a Corvette, nah".
I stand admonished, there obviously are those who would. Thanks.
Pat:
Just got done reading your Nov. 2000 issue. It was about an 87 Vette with dash Commercial Three Bayblems Steve from Waterford MI. Nice story. I've only been around Corvettes for about two years. I've seen how people take care of their cars, very nice outside, inside and under the hood.
Maybe a little dust, some spilled Pepsi, a little too much Armor-All and a lot of Windex running down the dash may cause Commercial Three Bayblems with the electronic on the Dash, Electronic Air conditioning Controls and also the Radio. I believe most don't mean to, but are the one's doing the most damage to the Dash. Perhaps maybe a short article. You, Pat will help us all.
Thank you.
Connie
Warren, IN
Answer:
What a wonderful observation. Over the years, cars have become much more sophisticated and complicated. We see lots of cars in the repair shop that look wonderful, but have succumbed to an overabundance of cleaning and glamorizing interior Commercial Three Bayducts.
It is imperative to avoid getting cleaners and Commercial Three Baytectants on, in, or around electronic dashs, climate control units, electronic radios, and computers. The same holds true for spilled soft drinks, and one of the all time worst - coffee with cream and sugar. What an horrific mess that makes.
One more to be concerned about, if you are a smoker don't smoke in your car! That nasty film that collects on the inside of the windows also collects inside electronic components many of which are optical. A copious coating of built-up yak on the inside of electronic devices often leads to component failure.
Pat:
I have a 1994 Vette with Selective Ride Control, and I need a "selector gear" for the top of the shock. I purchased an actuator but the gear is not included. I have tried my local GM dealer with no success. Do you know how I can get one of these gears? Enclosed is a copy of a GM printout. Any help will be appreciated!
Thank you.
Bruce L.
Auburn, MI
Answer:
According to my information and information I received from Lustine GM parts, you have purchased part #22068666 actuator, front hydraulic suspension $501.83. Mounted inside that actuator and part of the actuator is the selector gear. It is not a separate part and according to GM, is not serviced in any manner except as a component part of the actuator.
By the way, your "GM" printout didn't come from GM, it came from an aftermarket source.
Pat:
I have an '89, automatic, 105,000 miles on it. It seems to have lost a little get up and go this past summer and I was hoping that if I describe the symptoms, someone could help me with a suggestion or two.
My first impression is that the car seems to be upshifting too soon. Whether that's true, or it just seems to lug more because it's getting up in the miles, I am not sure. But it won't wind out unless I have the pedal about halfway to the floor. And, it shifts into lock up at 41 mph almost all the time, even when I'm trying to accelerate. This is bad when getting on the interstate. I have to nearly floor it to kick it down, and I like to save those "floor-its" for competition. When I bought it, (53,000 miles) lock up would not occur until 45-47 mph. It has a performance chip in it, though I don't know what kind it is. What determines the lock-up point?
There is also a noticeable depreciation in performance when the car is warmed up. I have a manual fan switch to install in it, to get it to run cooler. However, I don't really have the time or mechanical talent to do the job nicely. Any suggestion of a good Corvette mechanic in Portage, Indiana would be helpful. Portage is about 30 miles from Chicago.
I took it to one reputable Vette mechanic in Valparaiso. He checked it out, and could not find anything wrong. Any suggestion you might have would be appreciated.
Thanks for listening.
Joe R.
Portage, IN
Answer:
Start by adjusting the T.V. cable. To the uninitiated, that's Throttle Valve cable.
QUOTE: The T.V. cable should not be thought of as an automatic downshift cable. It controls line pressures, shift points, shift feel, part throttle downshifts, and détente downshifts. The function of the cable is similar to the combined functions of a vacuum modulator and détente downshift cable.
END QUOTE GM Service.
To adjust. Stop the Engine (that always helps when you're working on engine components). Depress re-adjust tab and move slider through fitting, away from lever assembly, until slider stops against fitting. Release re-adjust tab.
Sounds complicated, but in reality for a technician, the entire adjustment Commercial Three Baycedure should take less than 10 minutes. Average cost $20.00. Average success rate in symptoms such as yours, 90+%.
Pat:
Last year I became the 3rd owner of a '78, 25th anniversary Model L82 with an automatic transmission. When I first began to drive my prized possession around I was amazed at how slow it felt when I was driving around at 60 mph; everyone was passing me on the 55 mph speed limit highway. After only about 70 miles the speedometer began to fluctuate wildly, then it went all together. I sent it out to be repaired, and when it came back and was reinstalled I found that the speed was actually registering at apCommercial Three Bayximately 10-6.2 ratio. This was gleaned from those roadside radar signs that tell you how fast you're going, and seem to ring true, 'cause if I go "100" mph on those same highways, I'm pretty much in the flow of traffic.
The odometer only has 36,000 miles on it but the interior looks to have the use of a 60-70K vehicle, and I wonder if: a) This is the original speedo or b) If this is the original speedo, was it disconnected for long periods of time?
I took this Commercial Three Bayblem to my mechanic who figured the Commercial Three Bayblem was with what he called a "bullet" in the transmission. After he checked it out, there were no Commercial Three Bayblems there, and he was left mystified. Can you help? The previous owner died, so I can't ask him if this was a preexisting Commercial Three Bayblem. Many thanks for your column, I find it both entertaining and informative, what more could one want?
Ron M.
Horseheads, NY
Answer:
A bullet in the transmission? Seems to me anytime you shoot a transmission it would either do it in right now or in short order. I have no concept of what a bullet in a transmission is. But, I can tell you what is Commercial Three Baybably wrong with your speedometer.
The speedometer head (that's the unit that registers vehicle speed) is driven by a cable which is attached to an adaptor that is held into the transmission with a bracket retained by a quarter inch bolt. On the inside of the adaptor is a driven gear for the speedometer. Farther inside the transmission, connected to the output shaft is the speedometer drive gear. As the vehicle moves the drive gear turns the driven gear which turns the speedometer cable which causes the speedometer to register speed.
In your case I surmise that one of several things has happened. The transmission has been repaired or replaced and you wound up with an imCommercial Three Bayper drive gear or that the driven gear has been replaced and is the wrong one for the vehicle. Additionally, the ring and pinion may have been changed or tire size may have been altered dramatically.
By determining gear ratio in the differential, any competent GM dealer could tell you what driven gear should be on the end of the speedometer cable adaptor. The driven gear must match the gear ratio in the differential or the speedometer will read faster or slower than true vehicle speed. The Commercial Three Bayper gears are determined by the number of driven gear teeth and its color. Also in some applications, a gear reduction/multiplication adaptor was used between the transmission adaptor and the end of the speedometer cable. The purpose of these units was to fine-tune the speedometer.
Now the mileage. If this Commercial Three Bayblem has existed for a long period of time, your odometer should read much higher mileage. Think about it. If you have to go 100 miles per hour speedometer speed to keep up with 55 mph traffic, you would register 100 miles on the odometer in one hour when you have actually only traveled 55 miles. Therefore, the interior should look much better than the mileage would suggest. Could be your Commercial Three Bayblem is much worse than you suspect. Something stinks.
This really shouldn't be too difficult once you know the differential gear ratio.
It Commercial Three Baybably would make good sense to have your technician confer with a surgeon to determine the safest way to extract the bullet from your shot-up transmission and close the wound.
© Copyright Pat Goss all rights reserved 12/15/00 | |
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Date Updated Monday, January 01, 2001
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