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If the patch didn't work, it could be a poor patch job. Bad prep work, not enough adhesive, or not rolled out with enough force. A good patch job would include a rope seal shoved into the puncture, then trimmed flush with the inside of the tire and finally the patch applied with it being...

It's pretty simple. There are two small bolts at each end of the caliper that hold the caliper to guide pins that are in the caliper mounting bracket. Remove them and carefully slide the caliper off. The pads will probably fall out so grab each one and mark them to indicate which is inside...

If you have your foot on the brake pedal before you start the engine, the pedal dropping once vacuum is introduced into the booster (after engine start) is normal. The drop is usually about an inch but feels more like three or more inches.

Did you bleed the rest of the system? Chances are that when you removed the M/C from the car, air got into the lines so now when you depress the brake pedal, the air is compressing and not moving the fluid. Bench bleeding is required on a new master cylinder so you got that part done. Bleed...

All 1987 Vettes had ABS. Did somebody remove yours?? Simply passing fresh clean fluid thru the brake lines will effectively flush out the old dirty fluid. The best way to flush the system is with a pressure bleeder. That way you will be able to force fluid thru each line in turn without...

On my 92, there was only 1 amp relay. The relay provides power to all of the speaker amps. The location of the relay is under the instrument panel on the lower right side as you sit in the driver's seat. Remove the driver's side hush panel ( the one under the dash) and look up at the lower...

I'm not sure that a marine deep-cycle type of battery is suited for use in a vehicle. Deep-cycle batteries are (from what I have read and been told) designed to have extended periods of discharge followd by a full recharge with a charger capable of providing sufficent current to bring these...

A larger TB really won't do anything unless you have enough internal mods like a big cam, ported and polished heads, headers, port matching and more cubic inches. Once you get to 377 to 383 cid, then a bigger TB will help. You would probably see more benefit from cutting the air filter lid to...

The thermostat may be restricting coolant flow if everything else is in good shape or new. Also check the pressure cap to see if it's maintaining the proper pressure. Might check the cooling system to see it it's holding pressure. My radiator is still the original and while the engine has a...

If you have any noise coming in from the doors, you could install the factory stuff or try something like DynaMat glued to the door skin. Check with car audio shops to find a good material that will cut noise. The factory 87 mats had the same carpet material (typically cut-pile) and a vinyl...

230 coolant temp is pretty high. When you re-instlalled the current radiator, did you clean the A/C condensor coils? Anything lodged in there will restrict the flow of air to the radiator and that can cause high coolant temps. Is the lower air dam in place and in good shape? Is the cooling...

Wish I could help you with ordering sources, but I would think that European bulb suppliers like Phillips or OSRAM/Sylvania could point you in the right direction. The paper that Lars wrote has been around for some time and it has some good information in it. Heat from the higher output bulbs...

There should be a small (8 or maybe 10mm) screw at the front center portion of the cover. Pull the carpet cover back a bit and you should see the screw slightly recessed at the edge of the lid. Remove the screw and open the lid (it's hinged like the storage compartment lid).

Because the LT1's Optispark is at the front of the motor and below the waterpump, the wire routing is much different than the L98 motor. The wires on the driver's side go under the A/C compressor and alternator and through a small bracket below the compressor. The PS pump and a belt idler...

Yep, the sequential production number is the last 5 digits of the VIN.

What position was the shifter in? 3 or OD? Probably what you are feeling is the torque converter locking/unlocking and that's typical at the low 40's MPH speed you mentioned. My 92 A4 would feel like it's "shifting" when in OD when I lightly applied the brakes with my foot off the throttle...

If it was not a good practice, then GM would have made the C4 a fixed roof coupe.:L C4's coupes do have some body flex but it's not bad for general street use or even some fast curves. Cold tires can really accentuate the flexing or cowl shake but otherwise, it is no problem at all to drive...

I was at the local Wally World this morning and Mobil-1 5W-30 was $5.68 for a quart but the 5-quart jug was $21.84. Costco has a 6-pack case of quarts for $28.94.

You can get some nylon inserts for the plate screws but you can also just drill a small hole into the small aquare tabs and attach the plate that way using screws that are larger than the drilled hole. Some states make it illegal to use a dark plastic cover over the plate so check your state...

1SA is the lowest (least amount of packaged options) of the available option packages. Each subsequent package added more items. So 1SB included everything in 1SA and a few upgrades and 1SC included everything is 1SA and 1SB plus even more options. Typically, the individal items in an option...