General question

Pi98mustang · Dec 8, 2018

New to group ,have a 2002 crown Vic pi in my 98 mustang idles fine until you step on gas then it Boggs horrible! Check engine light came on for bad mass air flow sensor , my confusion is do what sensor do I get for this car the mustang mass air flow or crown Vic mass air flow?? Thank you all so much !!

wmburns · Dec 9, 2018

Pi98mustang said:
Check engine light came on for bad mass air flow sensor , my confusion is do what sensor do I get for this car the mustang mass air flow or crown Vic mass air flow?? Thank you all so much !!

Let me see if I can help you to answer your own question.

What engine management "system" is your car using? A Mustang or Crown Vic? (hint: The PCM is from a Mustang).

But I contend that it's unreasonable to expect any motor to perform well when there's an outstanding DTC. Best to always post the full DTC code as there are 1,000's of them and they each have a story to tell. However myself personally would never replace an expensive part such as a MAF sensor without first:

Cleaning it with MAF cleaner.
Ruling out an intake vacuum leak.
Confirming that the O2 sensors are sending "reasonable" switching data.
Confirming the fuel pressure.
Double checking that the fuel pressure regulator intake vacuum reference line is connected and leak free.
Testing it with an ODB2 scanner to confirm that it is actually sending bad data.

Note, You have a PI motor installed into a car with a PCM set up for a non-PI motor. The PCM will run this motor but it will not be able to take full advantage of the PI heads without a tune.

Here's some information that may help you.

ForScan ODB2 scanner w ELM327 USB
https://www.stangnet.com/mustang-forums/resources/forscan-odb2-scanner-w-elm327-usb.57/

Howto perform charging system voltage drop test
https://www.stangnet.com/mustang-fo...perform-charging-system-voltage-drop-test.56/

Pi98mustang · Dec 9, 2018

wmburns said:
Let me see if I can help you to answer your own question.

What engine management "system" is your car using? A Mustang or Crown Vic? (hint: The PCM is from a Mustang).

But I contend that it's unreasonable to expect any motor to perform well when there's an outstanding DTC. Best to always post the full DTC code as there are 1,000's of them and they each have a story to tell. However myself personally would never replace an expensive part such as a MAF sensor without first:

Cleaning it with MAF cleaner.

Ruling out an intake vacuum leak.

Confirming that the O2 sensors are sending "reasonable" switching data.

Confirming the fuel pressure.

Double checking that the fuel pressure regulator intake vacuum reference line is connected and leak free.

Testing it with an ODB2 scanner to confirm that it is actually sending bad data.

Note, You have a PI motor installed into a car with a PCM set up for a non-PI motor. The PCM will run this motor but it will not be able to take full advantage of the PI heads without a tune.

Here's some information that may help you.

ForScan ODB2 scanner w ELM327 USB
https://www.stangnet.com/mustang-forums/resources/forscan-odb2-scanner-w-elm327-usb.57/

Howto perform charging system voltage drop test
https://www.stangnet.com/mustang-fo...perform-charging-system-voltage-drop-test.56/

Thank you so much got the sensor replaced cleared a little of my boggy issue

wmburns said:
Let me see if I can help you to answer your own question.

What engine management "system" is your car using? A Mustang or Crown Vic? (hint: The PCM is from a Mustang).

But I contend that it's unreasonable to expect any motor to perform well when there's an outstanding DTC. Best to always post the full DTC code as there are 1,000's of them and they each have a story to tell. However myself personally would never replace an expensive part such as a MAF sensor without first:

Cleaning it with MAF cleaner.

Ruling out an intake vacuum leak.

Confirming that the O2 sensors are sending "reasonable" switching data.

Confirming the fuel pressure.

Double checking that the fuel pressure regulator intake vacuum reference line is connected and leak free.

Testing it with an ODB2 scanner to confirm that it is actually sending bad data.

Note, You have a PI motor installed into a car with a PCM set up for a non-PI motor. The PCM will run this motor but it will not be able to take full advantage of the PI heads without a tune.

Here's some information that may help you.

ForScan ODB2 scanner w ELM327 USB
https://www.stangnet.com/mustang-forums/resources/forscan-odb2-scanner-w-elm327-usb.57/

Howto perform charging system voltage drop test
https://www.stangnet.com/mustang-fo...perform-charging-system-voltage-drop-test.56/

Thank you so much for the knowledge an what to check for I was literally confused lol but I got the sensor replaced cleared up a little of my boggy issue now I’m suspecting my coil pack an wires to finish the trick ty so much again

General question

Pi98mustang

New Member

wmburns

Pi98mustang

New Member

Similar threads

General question

Pi98mustang

New Member

wmburns

Pi98mustang

New Member

Similar threads

Privacy & Transparency

Privacy & Transparency