P38 has trouble starting when hot
#1
P38 has trouble starting when hot
Hello,
My 1996 P38 4.6HSE has issues starting when the engine is hot. The car starts fine in the morning when the engine is cold, but if i drive around and get the engine up to operating temps and try to start the car after 5 or 10 min i get a rough idle and sometimes the car will just die. The rough idle only lasts for about a minute and then the car will run fine.
The check engine light is also on and my OBDII reader pulls the following codes.
P1177 and P1179
Has anyone experience anything like this before that could give me an idea on how to troubleshoot this problem?
Thanks
My 1996 P38 4.6HSE has issues starting when the engine is hot. The car starts fine in the morning when the engine is cold, but if i drive around and get the engine up to operating temps and try to start the car after 5 or 10 min i get a rough idle and sometimes the car will just die. The rough idle only lasts for about a minute and then the car will run fine.
The check engine light is also on and my OBDII reader pulls the following codes.
P1177 and P1179
Has anyone experience anything like this before that could give me an idea on how to troubleshoot this problem?
Thanks
#4
P1177:Maximum Negative FMFR Correction Fault
P1179:Maximum Negative AMFR Correction Fault
Its a fuel mixture problem. You need to find out what is causing it. Could be the fuel pump, could be the MAF, may also be the O2 sensors. You need to get a scanner on there that can read what the sensors are doing and if they are in normal their normal ranges.
P1179:Maximum Negative AMFR Correction Fault
Its a fuel mixture problem. You need to find out what is causing it. Could be the fuel pump, could be the MAF, may also be the O2 sensors. You need to get a scanner on there that can read what the sensors are doing and if they are in normal their normal ranges.
Last edited by LRScott; 12-14-2010 at 12:23 AM.
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