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You say "all original except the tires" but then list a bunch of stuff that has been replaced. Hoses, belts, sender units, and alternator? WTF? Alternators are date coded. They can be rebuilt or repaired. Anyone that won't take the time and effort to preserve original date-coded components on...

The 93 system is very different from the 86 system. The 86 system has a solid state relay/controller that is notorious for failing. The 93 does not have such a controller. The 93 has a CCM. ("Body Controller"). The door switches are inputs to the CCM. The CCM controls the dome light relay...

IIRC, the tensioner in a Calloway incorporates the turbo drain-oil scavenge pump. It's not a straight forward change-out. Probably expensive, too. It would probably be prudent to positively identify the source of the noise before replacing parts.

I Highly doubt there's anything wrong with the timing chain. Ignore it for now. That's an incredible amount of work for something that is probably just fine. Ignition timing; I'm not sure. I just read up on it. It does not have a by-pass mode like earlier ignition systems. Timing is totally...

The rear lights have lost their ground. The BRAKE lights ground back through the TAIL lights through the other bulbs to ground. You are looking for "G401". This is the ground point for the rear harness. It may be corroded, and cleaning it will restore the operation. In a convertible, it is...

Ester Oil is the correct oil for use with R134 in a system that previously contained Mineral Oil. PAG oil should NOT be used in R12 to R134 retrofits. PAG reacts with residual mineral oil and makes a mess that can only be cleaned up by replacing everything. PAG is fine for use in a system that...

Why don't you check the fuel pressure first? Watch it when it dies. Does the pressure begin to fall before it dies? My 85 did this, and it was the fuel pump. If the stalling is concurrent with the electric fan coming on, it could be the lower system voltage with the fan on causes the pump to...

Possibly a 'hidden' radar detector. That's the receiver. In a Corvette, they mount them on the 'floor' of the bumper under the headlight, because the plastic material of the bumper is transparent to radar waves.

There's a bracket for the shifter cable on the drivers side of the trans. It is held on with 2 of the bolts that hold the pan on. If these bolts are loose, it can cause your no-PARK.

I'm an experienced V-Bulletin user. I see that "you MAY edit your posts is ON". I just tried to add some text to a post. I ended up with a duplicate post. I can't get to the normal screen where you can check the radio button, and delete the post. A: What am I doing wrong? I never see the...

Tony: Nothing in the centre DIC is ECM derived. Well, Service Engine Soon is.... My primary advise is to "think of everything" you want to incorporate into your harness and system. If you forget something, and have the new loom completed, it's tough to add a wire. I am currently doing a Holley...

Thank you for the reply and thoughts. I had an 88 Convertible with Z52. I agree the 88's handling performance was superior to the 85's, but I attribute the difference to the better tires and no-scrub geometry, and the structural enhancements of the 88. I've owned the 85 since new. After the...

Thank You. I'm pretty good with Ohm's Law, and measurement conversions, but have zero experience with force conversions. I couldn't make the results "fit" the numbers listed for the Corvette Brakes springs. I'm now guessing the "sport" spring with it's "450-550" rating is in pound inch, and is...

The instant MPG, avg MPG, miles to empty, etc computations won't work. You will also need stand-alone cooling fan control. Maybe FAST can do that. I don't recall. I don't recall if the A/C clutch control in an 84 is by the ECM or not. This is easy to work around if it is. Not all the wires in...

I haven't been on here in awhile. Forgot how cool it is compared to other Corvette forums.... I need to replace the front spring in my 85. (Very original unmolested car, and has the award to verify it). It is breaking. My main concern is that the correct original ride height be retained. It is...

Based on the above, it IS the electrical part of the Ignition switch. Assuming both red wires at the Ignition switch are both hot, and have not blown a fuse link. I have never had the column on my C4 down. If it is like other GM's of the era, it's no big deal. Remove the under dash hush panel...

This was kind of a trick question. I assumed you would know that the DOHC heads are indeed NOT the same left and right because the cam drive end is on the front of the engine, and the two ends of the head are configured differently because of the cam drive requirements. Look at this pic. Pretty...

Sounds like you have no 3-4 clutch. I agree with others that have told you "it has to come out".

Is this also true for DOHC heads like Northstar and LT5 ? ;)

10163848 is the P/N for the cable. Google found lots of hits, but there isn't any stock. The TV cable may be too tight if the trans is "freewheeling" at 40. Are the shifts late and hard at light throttle? If so, TV is too tight. Proper TV adjustment is critical for a 4L60. Especially if it's...