newbie, need some advice please
Thread Starter
Instructor
Joined: Jun 2008
Posts: 182
Likes: 0
From: bristol
newbie, need some advice please
hi there, great forum and nice collection of cars! ok, im totally new to the vette scene, i picked up a 1990 black c4. amazing in one word! BUT....a couple of issues,
1: my rev counter is about 2k to high, not the engine, just the needle, its sits below 0 when off and when fired up and accelerating its just 2k higher than what it should be......
2. my check guages light comes on with ignition and goes out after few seconds, weird thing is that it very faintly flickers on when driving and on idle, bad earth possibly??
3 the car was sat for a while and when i drove it away the brakes were very faint with hard pressing and a wirring noise would come from the rear then service abs light, gradually that has stopped but what could that of been. still does it occasionally?
any help please, i have checked searchs but couldnt find much. thanks
1: my rev counter is about 2k to high, not the engine, just the needle, its sits below 0 when off and when fired up and accelerating its just 2k higher than what it should be......
2. my check guages light comes on with ignition and goes out after few seconds, weird thing is that it very faintly flickers on when driving and on idle, bad earth possibly??
3 the car was sat for a while and when i drove it away the brakes were very faint with hard pressing and a wirring noise would come from the rear then service abs light, gradually that has stopped but what could that of been. still does it occasionally?
any help please, i have checked searchs but couldnt find much. thanks
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
hi there, great forum and nice collection of cars! ok, im totally new to the vette scene, i picked up a 1990 black c4. amazing in one word! BUT....a couple of issues,
1: my rev counter is about 2k to high, not the engine, just the needle, its sits below 0 when off and when fired up and accelerating its just 2k higher than what it should be......
2. my check guages light comes on with ignition and goes out after few seconds, weird thing is that it very faintly flickers on when driving and on idle, bad earth possibly??
3 the car was sat for a while and when i drove it away the brakes were very faint with hard pressing and a wirring noise would come from the rear then service abs light, gradually that has stopped but what could that of been. still does it occasionally?
any help please, i have checked searchs but couldnt find much. thanks
1: my rev counter is about 2k to high, not the engine, just the needle, its sits below 0 when off and when fired up and accelerating its just 2k higher than what it should be......
2. my check guages light comes on with ignition and goes out after few seconds, weird thing is that it very faintly flickers on when driving and on idle, bad earth possibly??
3 the car was sat for a while and when i drove it away the brakes were very faint with hard pressing and a wirring noise would come from the rear then service abs light, gradually that has stopped but what could that of been. still does it occasionally?
any help please, i have checked searchs but couldnt find much. thanks
Thread Starter
Instructor
Joined: Jun 2008
Posts: 182
Likes: 0
From: bristol
and brakes are normally reliable then?
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Thread Starter
Instructor
Joined: Jun 2008
Posts: 182
Likes: 0
From: bristol
Safety Car
Joined: Oct 2007
Posts: 3,816
Likes: 0
From: :45 minutes from everywhere / E-I-E-I-O
A bad ground (earth) can cause MULTIPLE problems.
Hard brake pedal could be a vacuum leak to the power brake diaphragm, or a bad diaphragm itself. Is the brake pedal action the same way before you turn on the motor? If so, you have a vacuum leak, or bad booster.
Hard brake pedal could be a vacuum leak to the power brake diaphragm, or a bad diaphragm itself. Is the brake pedal action the same way before you turn on the motor? If so, you have a vacuum leak, or bad booster.
Thread Starter
Instructor
Joined: Jun 2008
Posts: 182
Likes: 0
From: bristol
no the brakes seem fine when off or running 99% of the time, just occasionaly you feel the abs throught the pedal and that noise from the back. it did it loads when i bought it and drove it away from where it had been sat, but as the miles went on it got better and now hardly does it. could it just be where its been sat maybe?
Safety Car
Joined: Jan 2006
Posts: 3,566
Likes: 4
From: Mt Laurel NJ
St. Jude Donor '06-'07
Change out your brake fluid, infact it would be a good idea to change all of the fluids, The second thing to do is to look on Ebay for a Factory Service Manual, it is the book GM gave to the dealers service departments to tell them how to fix our cars, it is the best investment you can make in your new car. It will answer just about all of your questions.
Randy
Randy
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Burning Brakes
Joined: Feb 2008
Posts: 988
Likes: 7
From: Sarasota Fl
Change out your brake fluid, infact it would be a good idea to change all of the fluids, The second thing to do is to look on Ebay for a Factory Service Manual, it is the book GM gave to the dealers service departments to tell them how to fix our cars, it is the best investment you can make in your new car. It will answer just about all of your questions.
Randy
Randy
Get the FSM - get the red two book edition (with electricals) though, not the preliminary white cover book. I'm not for certain, but the whirring noise you hear may be the ABS testing itself. I believe it is typical to hear it at the beginning of each drive. Good luck with your new vette,
Jonathan