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Search: Posts Made By: tttjump
Showing results 1 to 25 of 32
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Forum: C4 Tech/Performance
06-15-2009, 04:16 PM
Replies: 21
Views: 46,242
Posted By tttjump

code 32 and 42

I listed code 41 by mistake. I just checked my notes and it is code 32 an 42.
I justed started the car and the SES light came on. code 32 is stored.
Code 42 is not stored this time around.
Forum: C4 Tech/Performance
06-15-2009, 03:56 PM
Replies: 21
Views: 46,242
Posted By tttjump

Other than the code 32 and 41

Other than the code 32 and 42 The car runs fine, just passed smog.
I get a no start about once a month, wait 30 minutes and car starts and run fines.

Normally the SES light will flash in the...
Forum: C4 Tech/Performance
06-15-2009, 03:31 PM
Replies: 21
Views: 46,242
Posted By tttjump

I get the code 32 and 41 about

I get the code 32 and 42 about twice a month and a no start about once a month.

I wait about 30 minutes and the car will start.

I will look into it more when the SES light flashes again.
Forum: C4 Tech/Performance
06-15-2009, 03:05 PM
Replies: 21
Views: 46,242
Posted By tttjump

What are signs the ECM is going bad?

What are signs that an ECM may be goign bad? 1987 corvette with 160k miles. ECM appears to be original.
I have an extra ECM from an 88 with a hypertech chip.
Can I swap and 88 ECM into and 87?
Can...
Forum: C4 General Discussion
05-20-2009, 03:49 PM
Replies: 17
Views: 663
Posted By tttjump

I will replace it in a couple of weeks. But for...

I will replace it in a couple of weeks. But for now yes I just put it back together.
It took me 60 minutes to remove it and put it back together.
It doesn't seem like much is holding it together.
Forum: C4 General Discussion
05-19-2009, 10:13 PM
Replies: 17
Views: 663
Posted By tttjump

found the answer

You are correct, the sealed unit came apart.
Slid it back together. I know because I pulled the wheel off an 88 that I have and the same thing happen.
Forum: C4 General Discussion
05-13-2009, 02:58 PM
Replies: 17
Views: 663
Posted By tttjump

where did they come from?

36mm nut holds the rotor/drum to the shaft.
Replacing the left rear side will require a rotor/drum and rear hub assembly.
I don't think it should be that hard to replace with correct parts.

...
Forum: C4 General Discussion
05-13-2009, 01:40 PM
Replies: 17
Views: 663
Posted By tttjump

pulled right side off

The right side rear hub is not the same as the left side in the photos above.
The right rear is a sealed unit.

The numbers on the left rear rotor/drum is WF1 12786
On the right rear the numbers...
Forum: C4 General Discussion
05-13-2009, 12:22 PM
Replies: 17
Views: 663
Posted By tttjump

wheel studs

Also notice that the wheel studs are part of the rotor/drum and not the hub assembly.
Forum: C4 General Discussion
05-13-2009, 10:21 AM
Replies: 17
Views: 663
Posted By tttjump

no growling in turns. I took it off to inspect...

no growling in turns. I took it off to inspect the E-brake pads.

I don't understand how that is a sealed unit?
Forum: C4 General Discussion
05-12-2009, 10:47 PM
Replies: 17
Views: 663
Posted By tttjump

bearing grease

So I take it, that is not a good thing that I can see the ball bearings and grease?

http://nextlevelathleticsandfitness.com/wp-content/uploads/2009/05/dscf1162.jpg
...
Forum: C4 General Discussion
05-12-2009, 10:01 PM
Replies: 17
Views: 663
Posted By tttjump

rear bearings, can you add grease to them?

I removed the rear rotor/drum from an 87 to inspect the E-brake pads, the bearings look dry, can you add grease to them?
Forum: C4 General Discussion
05-07-2009, 08:52 PM
Replies: 3
Views: 432
Posted By tttjump

didn't notice speedo

I didn't notice if the speedo was off or not.
Forum: C4 General Discussion
05-07-2009, 06:01 PM
Replies: 3
Views: 432
Posted By tttjump

ABS started working after changing wheel size

Purchased car one month ago. ABS light was on. It would go out but would come back on after backing up or driving forward.
I switch from 18 inch wheels and 275/35/18 tires to 16 inch wheels and...
Forum: C4 Tech/Performance
04-30-2009, 10:50 PM
Replies: 1
Views: 2,937
Posted By tttjump

Intake and cyliner head casting numbers

I found these casting numbers on the cylinder head f2 14101128 and intake manifold 10066013,
are these standard casting numbers for an 87?
are these standard casting number for any year L98 motor?
Forum: C4 Tech/Performance
04-24-2009, 11:35 PM
Replies: 3
Views: 494
Posted By tttjump

exhaust question, cross pipe?

Does this pipe being at the spot make sense? Does it help or hurt engine performance or neither?
http://teachspeed.com/wp-content/uploads/2009/04/exhaust.jpg
...
Forum: C4 General Discussion
04-24-2009, 01:48 AM
Replies: 2
Views: 653
Posted By tttjump

that helps, much appreciated

Yes that helps, thank you.
Forum: C4 General Discussion
04-23-2009, 01:51 PM
Replies: 2
Views: 653
Posted By tttjump

1987 corvette DIC

What information is the DIC suppose to provide.
The screen over mines is scratched up and I can't make out the alerts.
What is on when the key is turned on?
What information does it alert you to?...
Forum: C4 Tech/Performance
04-23-2009, 01:47 PM
Replies: 31
Views: 7,938
Posted By tttjump

It passed, thanks to all

It passed this morning. Two small rubber hoses replaced.
Forum: C4 Tech/Performance
04-23-2009, 01:17 AM
Replies: 31
Views: 7,938
Posted By tttjump

looks like problem is solved

Earlier I replaced the two hoses that had deteriorated, 5 hours later I remove he gas cap to see if any pressure had built up, upon loosening the gas cap I heard the pressure release from the tank.
...
Forum: C4 Tech/Performance
04-22-2009, 04:17 PM
Replies: 31
Views: 7,938
Posted By tttjump

just found the small hose

I just found the small hose in front of the rear driver side tire. It is gummed up. The leak test is .46 and I need .40 to pass.

Going to change it out.
All together there are 5 hoses.
one from...
Forum: C4 Tech/Performance
04-21-2009, 09:56 PM
Replies: 31
Views: 7,938
Posted By tttjump

update on test performed

The tech said they clamp off the vapor line right before the check valve.
The tech clamp off the line in two places, the rubber line that goes in between the metal lines coming from the tank and...
Forum: C4 Tech/Performance
04-21-2009, 03:33 PM
Replies: 31
Views: 7,938
Posted By tttjump

EVAP failed emission test, california

Failed the evap portion of the California smog test, 87 L98 with no mods.
check purge control valve and fuel tank relief valve.
I can blow the valves with or without vacuum applied.
The valves do...
Forum: C4 Tech/Performance
05-28-2008, 05:01 PM
Replies: 4
Views: 336
Posted By tttjump

pictures?

Any photos of a discolored cat?
Also how do you judge a power loss?
I have an 88, with an auto trans that won't spin the tires, but it launches pretty well. Throttle response is good.
I have seen...
Forum: C4 Tech/Performance
05-28-2008, 03:09 PM
Replies: 4
Views: 336
Posted By tttjump

plug cats, how do you know?

How do you know when the cats are going bad?
I have read a lot about replacing but nothing in the archives about symptoms of a bad cat.

Outside of a low vacuum reading.
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