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Search: Posts Made By: bjm206
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Forum: C4 Tech/Performance
11-20-2018, 08:58 PM
Replies: 11
Views: 1,634
Posted By bjm206

I had a similar sounding problem on my 92. Turned...

I had a similar sounding problem on my 92. Turned out to be the power steering pump. Easy to test...just remove the serpentine belt and run the engine. Since the water pump is cam driven there is no...
Forum: C4 Tech/Performance
11-05-2012, 10:38 PM
Replies: 35
Views: 3,531
Posted By bjm206

Stop trying to start engine until you go through...

Stop trying to start engine until you go through the guide provided by vetteoz. Based on your description you may have an injector issue that is causing a hydrolock.
Forum: C4 Tech/Performance
09-18-2012, 07:43 AM
Replies: 7
Views: 12,210
Posted By bjm206

Verify you have strong consistent spark while...

Verify you have strong consistent spark while starting. Optispark issues can sometimes be first noticed as hard cold starts that do not throw diagnostic codes.
Forum: C4 Tech/Performance
07-10-2012, 10:30 PM
Replies: 18
Views: 2,588
Posted By bjm206

My MSD needed to be replaced after 4K miles due...

My MSD needed to be replaced after 4K miles due to an internal failure that contaminated the optical sensor. MSD fixed it under warranty. No timing screw adjustment caused that.
Forum: C4 Tech/Performance
06-04-2012, 12:50 PM
Replies: 5
Views: 434
Posted By bjm206

Here is a link to the instructions for a 93. ...

Here is a link to the instructions for a 93.

http://www.dynaspark.net/support/Dynaspark_GEN_I.pdf
Forum: C4 Tech/Performance
05-31-2012, 11:20 PM
Replies: 65
Views: 9,535
Posted By bjm206

http://www.chevythunder.com/1992-93%20LT1%20igniti...

http://www.chevythunder.com/1992-93%20LT1%20ignition%20circuit.bmp

The next time you have a no start condition verify that you have 12V (ignition on) at the ignition feed and that the Distr. Ref....
Forum: C4 Tech/Performance
04-09-2012, 10:31 PM
Replies: 5
Views: 1,528
Posted By bjm206

Are you using an inline spark tester (light) to...

Are you using an inline spark tester (light) to verify spark or just looking for an arc from the plug wire end?

I have seen 2 cases with LT1/4s that had the same no start after opti replacement...
Forum: C4 Tech/Performance
03-21-2012, 06:52 PM
Replies: 14
Views: 5,817
Posted By bjm206

The link below allows you to search across...

The link below allows you to search across multiple salvage yards for parts by distance from your location.

http://www.mypartshop.com/

I saw a few hits on pumps from your model year. Give one...
Forum: C4 Tech/Performance
02-19-2012, 09:11 AM
Replies: 11
Views: 627
Posted By bjm206

A Factory Service Manual (available new or used)...

A Factory Service Manual (available new or used) will be a big help in tracking the problem(s) you are seeing to the source.

Initial thoughts are to go through the wiring harness and make certain...
Forum: C4 Tech/Performance
01-25-2012, 08:21 PM
Replies: 31
Views: 2,319
Posted By bjm206

The best connector to use for the test is labeled...

The best connector to use for the test is labeled "Ignition System Test Connector" in the schematic below.

http://img7.imageshack.us/img7/5271/95ignsystemschematic.jpg

It is about 15 inches or...
Forum: C4 Tech/Performance
01-25-2012, 07:12 PM
Replies: 31
Views: 2,319
Posted By bjm206

If you hook a voltmeter (or better yet...

If you hook a voltmeter (or better yet oscilloscope) into the back of the opti connector shell from distributor reference low to high res or distributor reference low to low res without...
Forum: C4 Tech/Performance
01-24-2012, 09:07 PM
Replies: 31
Views: 2,319
Posted By bjm206

The ECU (computer) also uses the timing signal...

The ECU (computer) also uses the timing signal from the Opti to fire the injectors. If the injectors are also not firing while cranking that would point to the opti (or wiring, ECU, etc.) as the...
Forum: C4 Tech/Performance
01-21-2012, 07:05 PM
Replies: 11
Views: 2,458
Posted By bjm206

Here are a couple of things you can try after it...

Here are a couple of things you can try after it dies in order to diagnose.

1. An inline spark plug test light connected to the coil will allow you to see if the coil is firing while cranking. If...
Forum: C4 Tech/Performance
01-03-2012, 12:03 AM
Replies: 11
Views: 2,896
Posted By bjm206

They are the same...32 spline on 35 mm dia. shaft...

They are the same...32 spline on 35 mm dia. shaft using 1310 u joints.

The Dana/Spicer part number for the yoke is 2-3-13131x for all ZF6 transmissions in C4s. Last time I looked it was out of...
Forum: C4 Tech/Performance
12-08-2011, 11:31 AM
Replies: 10
Views: 465
Posted By bjm206

Good Optisparks should not go bad from sitting. ...

Good Optisparks should not go bad from sitting.

Starting fluid is like good whiskey. A little sip is ok, half the bottle in one shot is not. Do not make a habit of it. Moderation is the key. Never...
Forum: C4 Tech/Performance
12-07-2011, 11:05 PM
Replies: 10
Views: 465
Posted By bjm206

Check that the spark plug wires are seated...

Check that the spark plug wires are seated properly and are in the correct order at the distributor. Passengers side is 4-6-8-2 (top to bottom) and drivers side is 5-3-7-1 (top to bottom).

Open...
Forum: C4 Tech/Performance
11-22-2011, 10:24 PM
Replies: 6
Views: 2,742
Posted By bjm206

the Service Engine Soon (SES) light should...

the Service Engine Soon (SES) light should illuminate whenever the key is on and the engine is not running. If the bulb is burnt out (or other) you may have Diagnostic Trouble Codes (DTCs) that are...
Forum: C4 Tech/Performance
11-15-2011, 03:03 PM
Replies: 5
Views: 1,256
Posted By bjm206

Here are a couple of things you can try after it...

Here are a couple of things you can try after it dies in order to diagnose if it is ignition related.

1. An inline spark plug test light connected to the coil will allow you to see if the coil is...
Forum: C4 Tech/Performance
11-04-2011, 07:52 AM
Replies: 4
Views: 869
Posted By bjm206

Code 43 is an ESC fault that is tied to the knock...

Code 43 is an ESC fault that is tied to the knock sensors and related electrical circuitry.
Forum: C4 Tech/Performance
11-02-2011, 11:03 PM
Replies: 16
Views: 9,870
Posted By bjm206

The pump will prime for 2-3 seconds every time...

The pump will prime for 2-3 seconds every time you turn the ignition on. You still need to check that pressurized fuel is getting to the engine with the guage.
Forum: C4 Tech/Performance
11-02-2011, 10:22 PM
Replies: 16
Views: 9,870
Posted By bjm206

Code 28 on a 92/93 LT1 Corvette is the "Quad...

Code 28 on a 92/93 LT1 Corvette is the "Quad Driver Module Number 3" DTC which is related to the AC system (fan(s) and AC clutch). Code 28 will not turn on the SES light by itself as it is not...
Forum: C4 Tech/Performance
10-27-2011, 10:17 AM
Replies: 9
Views: 4,195
Posted By bjm206

Sometimes you can get the chatter to go away by...

Sometimes you can get the chatter to go away by changing the way you release the clutch and the engine speed at release for a while.

The chatter is caused by a wear pattern (flywheel and/or disc...
Forum: C4 Tech/Performance
10-24-2011, 08:50 PM
Replies: 1
Views: 2,615
Posted By bjm206

Broken valve springs can be spotted by close...

Broken valve springs can be spotted by close inspection of the spring coils. A small mirror and a good light source will help. Sometimes you can use a vacuum gauge to detect a broken spring which...
Forum: C4 Tech/Performance
10-24-2011, 04:25 PM
Replies: 5
Views: 723
Posted By bjm206

You need to work the P0100 code which relates to...

You need to work the P0100 code which relates to the mass airflow (MAF) sensor and related circuitry. A Factory Service Manual (FSM) will help greatly with this. Check the condition of the wires and...
Forum: C4 Tech/Performance
10-20-2011, 10:17 PM
Replies: 6
Views: 1,778
Posted By bjm206

They are potentially different setups (ALDL...

They are potentially different setups (ALDL connector vs OBD II connector). The link below will show you how to put the 1993 ECM into the diagnostic mode.
...
Showing results 1 to 25 of 38
 
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