My MAF setup is giving me a headache. What do I need to convert it to SD and how do I do iT?

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

You need the speed density computer (7730), a speed density PROM, a speed density knock sensor, and you can convert your existing wire harness, or buy a new speed density harness.

Other extras might be the speed density air intake.

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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

What exactly is the MAF doing??

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

 

Well, code 34 keeps popping up. When I plug it into the scanner, it's showing 9gm/sec at idle, and it goes up when I hit the gas. However, for whatever reason, the computer doesn't accept the reading from the MAF and throws it into code 34. On top of all that I just changed the burn off relay, and all the wires appear to be fine. The prom id is something like 8614 or 8641, some combination of those numbers, and i cant even identify it I figure it might be less confusing to go SD

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

The code 34 is low voltage, high vaccum at the MAF. 34. I think u aren't wanting to take it to a mechanic for this so if u have checked all connections, hoses, and relays, check the TPS voltage. It shouldn't be more than .16VDC. U might even need a new MAF. This can also be from a modded MAF. There is no reason to switch to Speed Density because u are getting a code 34. Do u know anything about how SD works at all??

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.



[This message has been edited by IROCZTWENTYGR8 (edited February 26, 2001).]

 

Correct me if i'm wrong, but from what I understand it uses a lookup chart to determine a/f mixture, where as MAF uses the volume of air, and SD uses the MAP sensor to determine the density. It just sounds less complicated. And cheaper to switch than to get a new MAF sensor only to have something else go wrong, as it often does on that car.

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

Edited previous post.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

 

TPS is 2 days old, and properly set. This code has been popping up intermittently long before the TPS was changed, and has been on constantly since slightly before the TPS was "damaged" when i was changing something else. One mechanic told me that the PROM might be malfunctioning as it interprets the MAF reading.. My scanner shows the MAF measuring the right amount of air.. I checked the readings on a car identical to mine.

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

Do a search on the Tech board and TPI for code 34. This is probably something like a quick fix or u might need a new MAF, so check everything, or have a few mechanics look at it.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

[This message has been edited by IROCZTWENTYGR8 (edited February 27, 2001).]

 

Here's a good page that did the MAF to MAP swap.

http://www.eecis.udel.edu/~davis/z28/ecm_swap_730/



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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project

 

LOL, I just got a code 34 on my car!! It was running so good too, but this wasn't a 34 while driving, it made starting the car hard and ran idiotically until I started it again and it didn't do it again. I haven't had a 34 that made starting the car hard before, I just had it while I was driving. I might know what it is though.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

[This message has been edited by IROCZTWENTYGR8 (edited February 27, 2001).]

 

Ain't that a bitch???
What do you think it is? Now that you mention it, my car cranks for a good 5 or 7 seconds before it starts..

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

When I bought this car 1 of the plastic vaccum hoses was cracked and the other owner just wrapped it in duct tape. It worked good until the heat in the engine made the tape fall off.

He had it on there good though, so when it did, I got a code 34 and the same kind of things (I'm not sure about the starting part, it might have, but I know thats how it drove when I got the code then), so I did the same, not wanting to get a new 1 and let maybe the next owner deal with it, and wrapped it like he did, but mine didn't come as good, and I can see that I am going to have to do it again because it is coming off some and air is probably getting out making the code 34.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.



[This message has been edited by IROCZTWENTYGR8 (edited February 27, 2001).]

 

Interesting.. my MAF had a small hole in it, about 1cm wide x 1cm high. I did a quick job of covering it with duct tape, and then some carbon fiber sticker crap. Could that be a problem?

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1980 Camaro, '88 Police 350 engine, Headers, full exhaust, completely redone, my baby!
1988 Iroc-Z L98, MSD 6a, Accel coil, K+N's, Airfoil, Coolant Bypass, Flowmaster, Gears, Late model Bose, I like the 80 better

 

Yeah, go and check it, even if it looks good, do it again, good though. See if it still does it. Mine worked until the heat made this 1 come off, so I'll just have to do it again, but better.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.