C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

94 diagnostics

Thread Tools
 
Search this Thread
 
Old Jun 25, 2013 | 11:34 PM
  #1  
1enick72's Avatar
1enick72
Thread Starter
3rd Gear
 
Joined: Jun 2013
Posts: 3
Likes: 0
From: Marietta GA
Default 94 diagnostics

I have a 65 C10 truck that I have installed a 94 Corvette LT1 with a stand alone harness and programmed PCM. When I got the engine I replaced most sensors including MAF and replaced the distributor. I am having some running issues and have tried to use my scan tool but no luck. I'm using an OTC 4000E and now it shows I need a special cable#3305-86.

Anybody have a lead on one of these cables or have another idea of what to use for a scan tool?
Reply
Old Jun 26, 2013 | 06:15 AM
  #2  
toptechx6's Avatar
toptechx6
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Default

Originally Posted by 1enick72
I have a 65 C10 truck that I have installed a 94 Corvette LT1 with a stand alone harness and programmed PCM. When I got the engine I replaced most sensors including MAF and replaced the distributor. I am having some running issues and have tried to use my scan tool but no luck. I'm using an OTC 4000E and now it shows I need a special cable#3305-86.

Anybody have a lead on one of these cables or have another idea of what to use for a scan tool?
94 and 95 Corvettes are unique in that the PCM's use the first generation OBDI diagnostic protocol, the scan tool connector however is visually identical to 96 and later OBDII vehicles. I am not familiar with the OTC 4000E but do know many scan tools cannot read the older OBDI data without specific adapters and software. If your harness includes a malfunction indicator lamp (MIL) you can retrieve codes using the paper clip method, see the link below. Other options would be to acquire the correct adapter and software if it is available for your existing tool, or locate a Tech1 or other OBDI compatible scan tool.
http://www.digitalcorvettes.com/foru...56&postcount=9
Reply
Old Jun 26, 2013 | 06:00 PM
  #3  
1enick72's Avatar
1enick72
Thread Starter
3rd Gear
 
Joined: Jun 2013
Posts: 3
Likes: 0
From: Marietta GA
Default

I've made the repairs for the codes that I had and now I need to look at some data.
Reply
Old Jun 26, 2013 | 06:09 PM
  #4  
toptechx6's Avatar
toptechx6
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2006
Posts: 3,629
Likes: 28
From: FL
Default

Another option here if you have a laptop.http://www.moates.net/gm-19851995-c-64.html
Reply
Old Jun 26, 2013 | 10:55 PM
  #5  
pkincy's Avatar
pkincy
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2003
Posts: 4,250
Likes: 656
From: San Diego Ca
Default

Ebay has a large number of different OBD1 to OBD2 gender changers.

You have OBD1 and that is what your scan tool needs to read but it needs the gender changer to hook up to your ALDL port.

Install the changer and configure the code reader to 94, 4th VIN P,
Truck No and 8th VIN Y and away you go.
Reply

Get notified of new replies

To 94 diagnostics





All times are GMT -4. The time now is 11:17 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE