Need help with a code 33 (MAF)
May 30, 2007 | 03:55 PM
Thread Starter
Racer
Joined: Jul 2000
Posts: 363
Likes: 11
From: St. Catharines Ontario CANADA
Need help with a code 33 (MAF)
1986 Automatic
I recently swapped out a bad thermostat. Four days later I get a strong smell of fuel and a ses light with a code 33. She won't idle now.
Also, I have noticed over the last month a humming/whistling noise coming from aft cabin - I can't locate the sound but maybe its the fuel pump?
Vac hoses and wiring to MAF look good...however I was working in that viscinity when I did the stat last weekend.
Can anyone put all these "clues" together for me?
Thanks in advance
Last edited by redvette1986; May 30, 2007 at 03:58 PM .
May 30, 2007 | 04:04 PM
Race Director
Joined: Jun 2004
Posts: 13,934
Likes: 704
From: WI
Unplug the MAF and see if it runs better. The whirrling noise behind the drivers seat is the ABS system. At 5 MPH after start up it runs and tests. You should hear it if you really jam the brakes as well.
May 30, 2007 | 04:26 PM
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Jun 1, 2007 | 04:01 PM
Thread Starter
Racer
Joined: Jul 2000
Posts: 363
Likes: 11
From: St. Catharines Ontario CANADA
Thanks, I will get my fingernails dirty this weekend...
Jun 4, 2007 | 04:50 PM
Thread Starter
Racer
Joined: Jul 2000
Posts: 363
Likes: 11
From: St. Catharines Ontario CANADA
Quote:
Originally Posted by
Aardwolf
Unplug the MAF and see if it runs better.
Ok, I unplugged the maf (while running) and there was no difference at all...now what?
Jun 4, 2007 | 05:44 PM
Safety Car
Joined: Jul 2006
Posts: 3,696
Likes: 1
From: MA
Maybe you have bad relays??
Maf Burn Off or Power relays
Jun 4, 2007 | 09:37 PM
Team Owner
Joined: Jan 2003
Posts: 20,275
Likes: 236
From: Summerland B.C. Canada
Quote:
Originally Posted by
RRT vette
Follow the flow chart in the link.
Jun 4, 2007 | 11:13 PM
Acct disabled by request 16 Aug 2009
Joined: Sep 2002
Posts: 498
Likes: 0
Sounds like the relays. The good news is that they are only about $11.00 a piece. Mine has idled just great since I changed them.
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