C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Another PCM code 1514;please help.

Thread Tools
 
Search this Thread
 
Old Jan 11, 2004 | 06:01 AM
  #1  
Myhardtop's Avatar
0Myhardtop
Thread Starter
Former Vendor
 
Joined: Aug 2001
Posts: 5,798
Likes: 50
From: Dallas & Chicago TX & IL
Default Another PCM code 1514;please help.

Now I have another PCM code 1514 (TAC System MAF Performance -A). What does it means? and what is causing it? I have a feeling that it is the mass air; in the past I was getting TB codes... now, this one. And it goes into "reduced power" mode.
Thanks for the input(s) :smash:
Reply
Old Jan 11, 2004 | 10:42 AM
  #2  
Andy@A&ACorvette's Avatar
Andy@A&ACorvette
Platinum Supporting Vendor
20 Year Member
Top Answer: 1
 
Joined: Sep 2001
Posts: 5,730
Likes: 270
From: VENTURA Ca
Default Re: Another PCM code 1514;please help. (Myhardtop)

You have to delete the code and go into the airflow tables and up the numbers. It's a safety feature. The PCM sees a bunch of air coming through, but the throttle isn't open enough to justify that much air. It assumes the throttle blade is broken or missing and shuts you down. Every blower car has this problem until the tables are changed.
Reply
Old Jan 11, 2004 | 11:04 AM
  #3  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default Re: Another PCM code 1514;please help. (Myhardtop)

Do you have a bunch of mods or are you running as stock engine?

I had MAF codes and I found out my air filter was frozen and I sucked the accordian tube in and it was leaking air at the clamp.

Check your air intake track from the air box to the throttle body.

BC
Reply
Old Jan 11, 2004 | 10:15 PM
  #4  
Myhardtop's Avatar
0Myhardtop
Thread Starter
Former Vendor
 
Joined: Aug 2001
Posts: 5,798
Likes: 50
From: Dallas & Chicago TX & IL
Default Re: Another PCM code 1514;please help. (Bill Curlee)

Thanks for the replies guys. I do not have a Supercharger but I do have NOS(dry). The car behaves this way on motor under hard accelerations and only sometimes...It have a mind of it's own. Hit it from a stop and sometimes it goes and others it will go into reduced power mode. I then pull over, turn off car, clear code and drive again.
To answer your question Bill, yes the car is modified...heads, cam, exhaust, TB and gears. Well, at least it runs 10.30's when it runs right. All this started when I repalced the TB with a stock ported unit a week or so after driving it with the new TB. :mad
Reply

Get notified of new replies

To Another PCM code 1514;please help.





All times are GMT -4. The time now is 03:52 AM.

story-0
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-1
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-2
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-3
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-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

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


VIEW MORE
story-5
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-6
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-7
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-8
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-9
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