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

1995 Swapping PCM?

Thread Tools
 
Search this Thread
 
Old Jun 14, 2023 | 09:23 AM
  #1  
yd328's Avatar
yd328
Thread Starter
Pro
10 Year Member
 
Joined: Sep 2012
Posts: 732
Likes: 72
From: the confused state CT
Default 1995 Swapping PCM?

Trying to get a 95 running. Can I swap my mt pcm into the at car, both are 95s? Do not want to drive it, just see if it will run.

Back story. Friend has a 95 vert that will not run. Starts, stumbles and dies. It seems to run like the timing is retarded and smells rich. Its a low milage car. All the basics have been done, plugs and wires,. Checked firing order etc The po put in a cardone opti( I believe the original is ok) then replaced the fuel pump. As he got it there was no fuel pressure, turned out to be the harness in the tank..Fuel pressure was dropping off immediately, replaced the fp regulator now steady and holding. It has spark to all plugs and is firing all injectors per noid light. Injectors also ohm checked, cleaned and flow tested. He added a new coil and icm. No codes due to the battery being disconnected. Putting a Snap on mt2500 on it i get an rpm reading, coolant sensor matches air temp. Only odd reading is the scanner shows desired idle to be 3200, my car shows 750. Key on Engine off all other reading are comparable to my 95. Going to hunt the grounds down next. Any thoughts, direction?

Thanks Gary
Reply
Old Jun 26, 2023 | 08:51 PM
  #2  
yd328's Avatar
yd328
Thread Starter
Pro
10 Year Member
 
Joined: Sep 2012
Posts: 732
Likes: 72
From: the confused state CT
Default

Cars fixed, The cardone opti that the po put in was bad. We ended up putting his pcm in my car and it worked, did not drive it only used it for start up. We put the original opti back in and the car is running.

Gary
Reply




All times are GMT -4. The time now is 01:54 PM.

story-0
10 Corvettes to Drive Before You Die!

Slideshow: 10 Corvettes to drive before you die.

By Joe Kucinski | 2026-06-23 08:31:12


VIEW MORE
story-1
Corvette & Porsche 911: How Two Icons Conquered the Last 25 Years

Slideshow: Corvette and Porsche 911, how two icons conquered the last 25 years.

By Joe Kucinski | 2026-06-23 08:18:33


VIEW MORE
story-2
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-3
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-4
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-5
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-6
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-7
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-8
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-9
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