Keep getting trouble code 33

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Dec 18, 2001 | 03:22 AM

jasman19

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Joined: Nov 2001

Posts: 205

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From: Vancouver, Wa

Car: RED 1986 IROC-Z28

Engine: 350 5.7L

Transmission: TH 700R4

Axle/Gears: 3.23 10 Bolt

Keep getting trouble code 33

My engine light came on and I noticed a big power loss. So I connected the pins with a paper clip and got trouble code 33 which is low vacuum at the maf sensor. Anyone know what causes this and how to fix it?

Dec 18, 2001 | 11:09 PM

TBIfly

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Joined: Oct 2001

Posts: 210

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From: Palm Springs CA

code 33-as i understand it, you can check the vacuum hoses from the sensor. Check the electrical connections at the ECM under the dash. ultimately just replace the sensor. i have no idea what causes it to go bad though

Dec 19, 2001 | 01:12 AM

gta324

Supreme Member

Joined: Aug 1999

Posts: 2,441

Likes: 1

From: sweden

Car: GTA -89

Engine: Blown 415"

Transmission: 4L80E

Axle/Gears: Strange 12-bolt

Check the vacuum hoses and all the connectors, and check your TPS settings!

/N.

Dec 19, 2001 | 02:23 AM

Guest

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The last thing I'd be doing is replacing the sensor. Try checking the wiring (fans sometimes eat the wires), check the pins on the connector and MAF, and try replacing the MAF relays.

I assume this is a TPI car, right?