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Search: Posts Made By: radstringz
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Forum: C4s for Sale/Wanted
12-09-2020, 04:58 PM
Replies: 1
Views: 1,448
Posted By radstringz

1988 convertible auto0 Sold

It's time to part with my old friend. She's been with me for the last 20 years. and I'm no longer able to take care of her properly. So I'm making her available to Forum members, who I believe would...
Forum: C4 Tech/Performance
07-30-2010, 04:34 PM
Replies: 6
Views: 527
Posted By radstringz

I have a similar prob w/ my '88 L-98. The leak...

I have a similar prob w/ my '88 L-98. The leak isn't all that bad...yet.

Does the motor have to come out to fix this?
Forum: C4 Tech/Performance
05-23-2010, 07:55 AM
Replies: 2
Views: 423
Posted By radstringz

Thanks. Monday will have to do. I used cheap...

Thanks. Monday will have to do. I used cheap (non-Viton) o-rings the last time and I'm paying for it now :(
Forum: C4 Tech/Performance
05-22-2010, 01:44 PM
Replies: 2
Views: 423
Posted By radstringz

O-rings needed here?

My '88 has been apart for several weeks and I forgot if the fuel send/return lines used o-rings at the connection to the fuel rail as well. Are they required here? I don't recall seeing them but I'm...
Forum: C4 General Discussion
01-16-2010, 12:28 PM
Replies: 146
Views: 4,247
Posted By radstringz

I'm here. Can't drive though - leaky fuel rail,...

I'm here. Can't drive though - leaky fuel rail, unheated garage - too cold to work there. Battery will be dead by the time she's roadworthy again. Then I'll be having to deal with a coolant leak [...
Forum: C4 General Discussion
12-24-2009, 12:43 PM
Replies: 104
Views: 2,568
Posted By radstringz

I'll be here. Family's all gone and I have the...

I'll be here. Family's all gone and I have the day to myself.
:thumbs:
Forum: C4 Tech/Performance
12-03-2009, 11:31 AM
Replies: 9
Views: 476
Posted By radstringz

My '88 vert uses the scissor-type mechanism, and...

My '88 vert uses the scissor-type mechanism, and a spot weld broke loose between two parts. Rewelding the parts fixed my problem. It would not roll up or down, and would only stay up with something...
Forum: C4 Tech/Performance
11-17-2009, 11:39 AM
Replies: 5
Views: 481
Posted By radstringz

Damn! I just bought this from Amazon last week....

Damn! I just bought this from Amazon last week. It was $33 and change with shipping. A very comprehensive tome.

-jr
Forum: C4 Tech/Performance
11-17-2009, 09:40 AM
Replies: 10
Views: 6,819
Posted By radstringz

Phantom Vette 1 said: All of this...

Phantom Vette 1 said:




All of this came about because of Federal regs that required that gasoline be reformulated to eliminate "lead". If you recall, tetraethyl lead was used as an additive...
Forum: C4 Tech/Performance
11-16-2009, 08:57 AM
Replies: 10
Views: 6,819
Posted By radstringz

The insulated pipe from exhaust to intake is part...

The insulated pipe from exhaust to intake is part of the EGR system. It transfers hot exhaust gases back through the combustion process (Exhaust Gas Recirculation). This has the effect of reducing...
Forum: C4 Tech/Performance
11-16-2009, 08:43 AM
Replies: 18
Views: 8,924
Posted By radstringz

So many clues... A magnet comes to mind as a...

So many clues...

A magnet comes to mind as a way to tell the difference between cast iron and aluminum.

The valve cover bolt pattern is another.

I can't say for certain if the Spark plugs...
Forum: C4 Tech/Performance
09-22-2009, 01:50 PM
Replies: 7
Views: 12,491
Posted By radstringz

Seems to me that an increase in exhaust...

Seems to me that an increase in exhaust back-pressure would be accompanied by a decrease in intake manifold vacuum. Do you have a gauge to measure vacuum? Anybody have any numbers for comparison?
...
Forum: C4 Tech/Performance
09-05-2009, 07:14 PM
Replies: 4
Views: 6,351
Posted By radstringz

First drop the hush panel. 3 screws on my '88,...

First drop the hush panel. 3 screws on my '88, and a little wiggling around.

Using a mirror, look up into the area exposed. A piece of white or cream colored plastic holds the ECM in place. There...
Forum: C4 Tech/Performance
07-24-2009, 01:51 PM
Replies: 10
Views: 418
Posted By radstringz

Fuel pressure was tested and was OK. 41psi at...

Fuel pressure was tested and was OK. 41psi at turn-on and 38-42 during operation.

I cleaned the throttle body and IAC valve today. It yielded the most improvement yet. :thumbs: Car now idles...
Forum: C4 Tech/Performance
07-22-2009, 10:24 PM
Replies: 10
Views: 418
Posted By radstringz

OK, after locating the EST connector (the...

OK, after locating the EST connector (the brown/black single wire connector near the brake booster), I disconnected it to check the base timing. It's set at 6 BTDC, spot on according to the emissions...
Forum: C4 Tech/Performance
07-21-2009, 11:46 AM
Replies: 10
Views: 418
Posted By radstringz

Yes, it lights up. It ran very rich. The plugs...

Yes, it lights up.
It ran very rich. The plugs were sooty. Gas mileage was poor.
Firing order and wire position have been confirmed.



The timing has never been disturbed, but... a connector...
Forum: C4 Tech/Performance
07-21-2009, 08:42 AM
Replies: 10
Views: 418
Posted By radstringz

'88 won't idle - no codes either...

Hello all. My '88 will start and run ok for about 10 seconds, then die. Fuel pump, filter, injectors are all new, cap and rotor have been replaced.

The ECM shows no codes - not even code 12. Is...
Forum: C4 Tech/Performance
06-26-2009, 01:52 AM
Replies: 13
Views: 849
Posted By radstringz

I too, have just ordered 22# Bosch III's for my...

I too, have just ordered 22# Bosch III's for my '88. Car sat 2 years and gas turned pretty gamey. Now I have rough (really rough!) idle. Fuel additives weren't much help. Fresh gas, new filter, but...
Forum: C4 General Discussion
06-18-2009, 06:56 AM
Replies: 11
Views: 568
Posted By radstringz

Have fun putting them back on. BTW, if you find...

Have fun putting them back on. BTW, if you find LED replacements for the 891 bulbs, let us know...

jr
Forum: C4 General Discussion
06-14-2009, 10:35 PM
Replies: 37
Views: 1,699
Posted By radstringz

:iagree: jr

:iagree:

jr
Forum: C4 Tech/Performance
06-14-2009, 01:36 PM
Replies: 9
Views: 641
Posted By radstringz

A couple washers under the nuts is what I used. ...

A couple washers under the nuts is what I used.

jr
Forum: C4 General Discussion
06-13-2009, 10:57 PM
Replies: 30
Views: 1,518
Posted By radstringz

My '88 needs paint and leather BAD, but I still...

My '88 needs paint and leather BAD, but I still get compliments whenever I drive it. You can't say that about most 21 year old cars.
Forum: C4 Tech/Performance
06-13-2009, 03:39 PM
Replies: 9
Views: 641
Posted By radstringz

Did you toss the frisbee? jr

Did you toss the frisbee?

jr
Forum: C4 Tech/Performance
06-10-2009, 06:09 PM
Replies: 9
Views: 758
Posted By radstringz

Got my manifolds back from the machine shop...

Got my manifolds back from the machine shop today. Unfortunately, the studs on mine didn't come out easily! Soaking in weasel p*ss was futile! They were rusted and seized and it took a torch to get...
Forum: C4 Tech/Performance
06-06-2009, 10:07 AM
Replies: 9
Views: 758
Posted By radstringz

That's the plan! :yesnod: -jr

That's the plan! :yesnod:

-jr
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