Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C4 Tech/Performance
L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine Sponsored by
J&D Corvette

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 08-25-2013, 03:41 AM   #1
adbecker
Junior Member
 
Member Since: Aug 2013
Default Code 44 on a stock '84

Hello, All;

Please forgive this (and kindly redirect) as this may be a newbie question. My son and I recently purchased a 1984 that began running rough with a "Check Engine" light after several weeks of perfect operation. We read the codes and it was flashing a 44 (lean exhaust). After checking the wiring, we swapped out the O2 sensor to no avail. We checked the timing and found it was more than 12 BTC at idle (6 BTC is the spec.). Adjusting the timing made things worse.

Could it be a fuel pump (low pressure) thing? Or, is it something else? Any help is appreciated. My experience is in non-electronic vehicles so I am at a loss here.

Thanks in advance.

Tony
adbecker is offline   Reply With Quote
Old 08-25-2013, 07:40 AM   #2
adbecker
Junior Member
 
Member Since: Aug 2013
Default

I forgot to add that after changing the O2 sensor and clearing the codes (disconnecting the battery), the Check Engine light has not come back but it still is running rough at idle and wants to quit unless it gets revved.
adbecker is offline   Reply With Quote
Old 08-25-2013, 09:58 AM   #3
ex-x-fire
CF Senior Member
 
ex-x-fire's Avatar
 
Member Since: Dec 2009
Default

When you set the timing, did you unhook the timing connector? Look on the emission label for the directions.
I'd check the fuel pressure, these tbi systems can run on very low pressure, though not very good. I'd test it at the fuel filter, it has rubber hose connections, so you can tee into there. Good time to change that filter, stock spec is 9-13psi.
ex-x-fire is offline   Reply With Quote
Old 08-27-2013, 12:11 PM   #4
adbecker
Junior Member
 
Member Since: Aug 2013
Default

ex-x-fire: Thanks for the help. Yes, we did unhook the timing connector. After further dead ends, we gave up and took it to a local shop we trust. They found it had a bad intake manifold gasket. (The car had been stored for many years which might explain it.) All should be well by this afternoon.
adbecker is offline   Reply With Quote
Old 08-27-2013, 12:11 PM
 
Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Tech/Performance
Reload this Page Code 44 on a stock '84
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 02:46 AM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2