MAF or Relays?
Thread Starter
Racer
Joined: Jul 2005
Posts: 397
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From: Weston Fl
MAF or Relays?
Hello all! Long time no post (almost 3 months 
)
A few months back (yes, I know I'm a terrible owner for this..) my SES light came on. So I hook up the OBD-I reader to the '88 and pull the codes. The code I keep getting is the code, which says that it's either the MAF or the MAF relays (Sorry that I don't remember the code number at the moment.. this is why I hate posting when I'm tired..)
anyways..
When I start my car, it jumps around for a good 5-6 seconds (from cold) and then kicks in and I have no problem for the rest of the ride. If I put 'er in drive before she has a chance to smooth out, she jerks around for a while before finally catching back up or kicks back in when the gear changes (automatic tranny).
Does this sound like the MAF to you or the relays? I honestly think it sounds like the MAF, but I don't want to throw $300 in there if I can replace the $10 relay! I just replaced both relays about 5 months ago, but I'm hoping that maybe I just got a couple of bad relays. I have 2 more payments on her and she's finally mine, but I don't want to turn this into 3 more payments just by replacing the MAF!
If you need to know the exact code, please let me know and I'll go out and get it. If you know which one I'm referring to, that'll be great
Thanx in advance!
~Derek
(I'm glad to be back to the forum.. I've been working so much lately.. they got rid of my boss and gave me all of his work)
)A few months back (yes, I know I'm a terrible owner for this..) my SES light came on. So I hook up the OBD-I reader to the '88 and pull the codes. The code I keep getting is the code, which says that it's either the MAF or the MAF relays (Sorry that I don't remember the code number at the moment.. this is why I hate posting when I'm tired..)
anyways..
When I start my car, it jumps around for a good 5-6 seconds (from cold) and then kicks in and I have no problem for the rest of the ride. If I put 'er in drive before she has a chance to smooth out, she jerks around for a while before finally catching back up or kicks back in when the gear changes (automatic tranny).
Does this sound like the MAF to you or the relays? I honestly think it sounds like the MAF, but I don't want to throw $300 in there if I can replace the $10 relay! I just replaced both relays about 5 months ago, but I'm hoping that maybe I just got a couple of bad relays. I have 2 more payments on her and she's finally mine, but I don't want to turn this into 3 more payments just by replacing the MAF!
If you need to know the exact code, please let me know and I'll go out and get it. If you know which one I'm referring to, that'll be great
Thanx in advance!
~Derek
(I'm glad to be back to the forum.. I've been working so much lately.. they got rid of my boss and gave me all of his work)
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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If the relays are new, and this came back, then its the MAF itself.
Otherwise I would tell you to replace the relays first.
Otherwise I would tell you to replace the relays first.
Thread Starter
Racer
Joined: Jul 2005
Posts: 397
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From: Weston Fl
Originally Posted by vader86
If the relays are new, and this came back, then its the MAF itself.
Otherwise I would tell you to replace the relays first.
Otherwise I would tell you to replace the relays first.
I guess I'll have to put in the money. I HATE driving around with an SES light, so this will be an expense, which would justify as a good reason for pushing back my car payments..
~Derek
Le Mans Master
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Originally Posted by Fork501
*sigh* That's what I was afraid of .. lol
I guess I'll have to put in the money. I HATE driving around with an SES light, so this will be an expense, which would justify as a good reason for pushing back my car payments..
~Derek
I guess I'll have to put in the money. I HATE driving around with an SES light, so this will be an expense, which would justify as a good reason for pushing back my car payments..
~Derek
Thread Starter
Racer
Joined: Jul 2005
Posts: 397
Likes: 0
From: Weston Fl
Originally Posted by aminnich
before you throw $300+ at it why not try posting for used on this forum, or check out vette2vette for used one? just a thought.
~Derek
Advanced
Joined: Mar 2006
Posts: 76
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From: Beavercreek Ohio
sensor is possible
My 89 six speed had a recurring light and coded to the MAF...I saw a posting that identified a 3rd sensor...fuel pump located on the near the firewall on the drivers side. changed all 3 and reinstalled the Bosch that I changed 1st and the problem went away.
The aftermarket MAF(2) that I tried both made the car run like crap and reduced mileage more than 10mpg.
So I recommend checking your year to see if you have the fuel pump relay...same part number as the burn down and power relays.
It fixed mine!!
The aftermarket MAF(2) that I tried both made the car run like crap and reduced mileage more than 10mpg.
So I recommend checking your year to see if you have the fuel pump relay...same part number as the burn down and power relays.
It fixed mine!!
Thread Starter
Racer
Joined: Jul 2005
Posts: 397
Likes: 0
From: Weston Fl
Originally Posted by roy Arrington
My 89 six speed had a recurring light and coded to the MAF...I saw a posting that identified a 3rd sensor...fuel pump located on the near the firewall on the drivers side. changed all 3 and reinstalled the Bosch that I changed 1st and the problem went away.
The aftermarket MAF(2) that I tried both made the car run like crap and reduced mileage more than 10mpg.
So I recommend checking your year to see if you have the fuel pump relay...same part number as the burn down and power relays.
It fixed mine!!
The aftermarket MAF(2) that I tried both made the car run like crap and reduced mileage more than 10mpg.
So I recommend checking your year to see if you have the fuel pump relay...same part number as the burn down and power relays.
It fixed mine!!
~Derek
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
That's been me posting about the 3rd relay regarding the MAF. If you have a FSM you can read it for yourself-what it essentially says is the MAF relays get their required voltage "through control of the fuel pump relay" to tired tonite to look it up and quote it again! but I'd rather spend $10 on a FP relay than $300 on a new MAF. While you're at it check the wiring going into the FPm relay, the insulation shrinks an exposes bare wires-in my case they were coming in contact with each other.
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Thread Starter
Racer
Joined: Jul 2005
Posts: 397
Likes: 0
From: Weston Fl
Originally Posted by rick lambert
That's been me posting about the 3rd relay regarding the MAF. If you have a FSM you can read it for yourself-what it essentially says is the MAF relays get their required voltage "through control of the fuel pump relay" to tired tonite to look it up and quote it again! but I'd rather spend $10 on a FP relay than $300 on a new MAF. While you're at it check the wiring going into the FPm relay, the insulation shrinks an exposes bare wires-in my case they were coming in contact with each other.
Thanx for all of the help, everyone!
~Derek
w/Vader.