i got my computer scanned today and it threw a code 33 witch is saying that the maf is reading to high.i cant remember the other code but its and egr problem.now,if the maf sensor is reading to high is that cause my tps is set at 64?iac valve?cause i rememoved the screens?
now as far as the egr problem i might know what that is, i got a holley fuel pump and instead of putting the hose where the pulsator goes i put the pulsator back on and it seemed like it didnt fit back on right so it might be leaking in the tank a little, if that makes sense?so please help.

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1987 IROC-Z28
355 TPI
58MM HOLLEY TB
HOME PORTED PLENUM
LT1 INJECTORS
HEDMAN HEADERS
CRANE AFPR
MSD WIRES
JET FAN SWITCH.
3' 2 chamber flowmaster cat-back system.

STILL TO COME,
3:73 POSI DISK REAR
4' COWL HOOD
4TH GEN INTERIOR
ALL AROUND SUSPENSION KIT

 

i had the same code and after about a week i bought a new maf sensor. the code has not come back.DO NOT CUT THE SCREENS OUT they are not a filter they are there to straighten airflow so the sensorcan read it better.the egr code..... if it only comes on on cold starts and doesn't turn your light on when you start it hot. i have had this for a year now and it is no big deal.the egr is probably got a piece of carbon stuck in it.

p.s.
the maf was $400(cdn)

 

Try checking/changing the Mass air sensor relays. Most of the time their bad, and a lot cheaper then the sensor itself.
Marty

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91 Z28 4L60, electric red, 355. JE 11.1 flat tops, LT-1 rods, L-98 crank. Ported trick-flows by GTP, cc 306 grind, 1.6 chromemoly rr's, LT-1 intake fabricated for L-98. Tubular k-member,a-arms,manual rack-and-pinion,coil-overs,koni spa-1's. Ford 9" w/3.89's and spool. and still more to come.

'89 Mustang GT. just got it. only weight reduction mods so far.

'99 Neon R/T daily driver

 

WERE ARE THE RELAYS FOR THE MASS AIR FLOW SENSOR?

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1987 IROC-Z28
355 TPI
58MM HOLLEY TB
HOME PORTED PLENUM
LT1 INJECTORS
HEDMAN HEADERS
CRANE AFPR
MSD WIRES
JET FAN SWITCH.
3' 2 chamber flowmaster cat-back system.

STILL TO COME,
3:73 POSI DISK REAR
4' COWL HOOD
4TH GEN INTERIOR
ALL AROUND SUSPENSION KIT

 

Firewall, driver's side, near power brake booster. That's also where the identical-looking fuel pump relay is, too.

 

SO WHICH RELAY IS WHICH?