check engine light please help me?
08-22-2005, 04:23 PM
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Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
check engine light please help me?
ok this is not a third gen but my friend is in dier need of help. he has a 99 toyota Rav4 (toyota sucks ) and his check engine light came on. so i came over scanned it and it read EGR insufficient flow detected code p0402. I put a new egr valve on and still light will not go off and still scannes insufficient flow detected. I double checked the egr and it is installed perfect I am stumped I need help and one give me something to look for thanks
08-22-2005, 10:43 PM
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Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
And any washers that the generics sometimes come with?
Clear the codes. Find a toyota or rav4 board.
Clear the codes. Find a toyota or rav4 board.
08-23-2005, 01:14 AM
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Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
yes i turned the code off. do you think something else in the egr system is at falt
08-23-2005, 01:38 AM
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Car: 90 Formula
Engine: 355 C.I.
Transmission: 5 Speed
Axle/Gears: 3.42
Egr Valve will have a low flow condition if one of the following is an issue.
Most common : VSV Valve which is the vacume solinoid that sends vacume to the EGR. ( Probobal ) Located between the valve cover and the main air chamber on the intake.
Vacume supply to VSV is off, broken or ?
Vacume modulator ( this operates with exhaust pressure to allow the vacume supply to complete its path to the EGR )
Bad EGR Valve. New ? from Toyota ?
And lastly the egr passage is plugged up
Most common : VSV Valve which is the vacume solinoid that sends vacume to the EGR. ( Probobal ) Located between the valve cover and the main air chamber on the intake.
Vacume supply to VSV is off, broken or ?
Vacume modulator ( this operates with exhaust pressure to allow the vacume supply to complete its path to the EGR )
Bad EGR Valve. New ? from Toyota ?
And lastly the egr passage is plugged up
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