PCM troubleshooting

Covers most all 98 fords including mustang v6, v8, cobra, lincoln town car, grand marquis and crown vic.
redtopracer
Posts: 97
Joined: 2021 Mar 24, 10:32
Location: springdale arkansas
Vehicle Information: 98 mustang gt 5 spd

Re: PCM troubleshooting

Unread post by redtopracer »

Dang

Mainly because this build has spiralled out of control.


I just need it to run with minimal work at this point. Juggling too many irons in the fire at this point


Even worth plugging the f150 pcm in?


Didnt realize it, but they have a 98 grand marquis as well. Guess ill go swap PCMs tomorrow.
decipha
Posts: 5031
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: PCM troubleshooting

Unread post by decipha »

try it worse case it doesnt work
redtopracer
Posts: 97
Joined: 2021 Mar 24, 10:32
Location: springdale arkansas
Vehicle Information: 98 mustang gt 5 spd

Re: PCM troubleshooting

Unread post by redtopracer »

Ay!


Always go back tomorrow.
redtopracer
Posts: 97
Joined: 2021 Mar 24, 10:32
Location: springdale arkansas
Vehicle Information: 98 mustang gt 5 spd

Re: PCM troubleshooting

Unread post by redtopracer »

Well

FOU1 ran with fha3


But it was extremely unhappy and ignored a lot of inputs from the tune with the low speed fan running 24/7



Also to note, random speedo and exterior light fluctuations



Good news is it ran as good as it ever has.


Tomorrow i go back to the yard to try and get a 98 marquis PCM
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decipha
Posts: 5031
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: PCM troubleshooting

Unread post by decipha »

that means it has a different bidi port mapping so its not interchangeable
redtopracer
Posts: 97
Joined: 2021 Mar 24, 10:32
Location: springdale arkansas
Vehicle Information: 98 mustang gt 5 spd

Re: PCM troubleshooting

Unread post by redtopracer »

The 98 marquis will work right?
decipha
Posts: 5031
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: PCM troubleshooting

Unread post by decipha »

you can plug the hardware code on the homepage under supported ecus and it'll tell you
redtopracer
Posts: 97
Joined: 2021 Mar 24, 10:32
Location: springdale arkansas
Vehicle Information: 98 mustang gt 5 spd

Re: PCM troubleshooting

Unread post by redtopracer »

Ok, its supported.


What bin should i run this under?



Its a vtc5 out of a 98 marquis
decipha
Posts: 5031
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: PCM troubleshooting

Unread post by decipha »

???

why not use the same bin youve been using?

I thought your purpose is replacing it with the same ecu was so it was plug and play?
redtopracer
Posts: 97
Joined: 2021 Mar 24, 10:32
Location: springdale arkansas
Vehicle Information: 98 mustang gt 5 spd

Re: PCM troubleshooting

Unread post by redtopracer »

Idk if it needed the auto v8 bin or what


Shit, plugging it in and sending with fha3
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