MAF replaced still start Problem
Thread Starter
Drifting
Joined: Jan 2004
Posts: 1,606
Likes: 1
From: Bowling Green , KY>
Cruise-In XI, XII Veteran
NCM Lifetime Member & Ambassador
MAF replaced still start Problem
Replaced my MAF and vette still doesn't start with turn of key. I need to depress the gas pedal to get it started.. I've heard something about relays??? Where are they? Could they be the problem? I have a ' 87 vert... 
Safety Car
Joined: Sep 2003
Posts: 3,599
Likes: 24
From: Orange County NY
St. Jude Donor '10-'11-'12-'13
When the car does finally start, are you getting a "SES" light? If so, you'll want to pull the codes.
The MAF Sensor has a burn off relay. If this is not working properly, you'd get a code 36.
If it is not throwing any codes, leaky injectors COULD be one of a few possible causes.
Does it do this when the engine is both cold and hot?
The MAF Sensor has a burn off relay. If this is not working properly, you'd get a code 36.
If it is not throwing any codes, leaky injectors COULD be one of a few possible causes.
Does it do this when the engine is both cold and hot?
Thread Starter
Drifting
Joined: Jan 2004
Posts: 1,606
Likes: 1
From: Bowling Green , KY>
Cruise-In XI, XII Veteran
NCM Lifetime Member & Ambassador
No SES light.. Usually only happens after going somewhere and then trying to restart.. If it sits for day or more will start up. When going to :store,gas station, show, etc. always have to depress gas pedal to get it started.
Race Director
Joined: Aug 2000
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Cruise-In II Veteran
Could be leaking injectors.See,when the car sits overnight,if the plugs got wet from gas it had time to evaporate.That makes it easy to start.
Do a fuel pressure test to see if it holds or leaks.Pressing the gas pedal down to start the car puts the car into clear flood mode which shuts off injector spray and allows the car to crank and eventually fire.Just hold the gas down long enough and it will start.Thats another sign of leaky injectors.
Let us know what you find.Start there first.
Do a fuel pressure test to see if it holds or leaks.Pressing the gas pedal down to start the car puts the car into clear flood mode which shuts off injector spray and allows the car to crank and eventually fire.Just hold the gas down long enough and it will start.Thats another sign of leaky injectors.
Let us know what you find.Start there first.
Drifting
Joined: Apr 1999
Posts: 1,261
Likes: 6
From: Middletown New Jersey
Have you checked your IAC position? If it is all the way closed, the motor might not be getting enough air to start. That's why when you step on the gas, the blades on the TB open and give you the air you need. I would make sure your IAC is ok and make sure your TPS is set to spec.
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