Armyruss79
New Member
- Joined
- March 5, 2018
- Messages
- 5
- Reaction score
- 1
- City, State
- Apollo Beach, Fl
- Year, Model & Trim Level
- 2004 Explorer Limited
So I took y Explorer to the shop today to get the A/C worked on. Long story short the tech decided to unhook my PCM from the firewall without unhooking the battery to clear the memory and bam here I am. I am aware of the P0352 coil issue. I do have a slight misfire but thats besides the point it is a 4.6. the PCM is kicking double codes meaning that the 3 listed DTC's are listed twice with the code reader. I have unhooked the battery touched the negative to the positive for a hard reset. I have taken my throttlebody off looked around cleaned and done what I can..So if i take the key put the key and do not turn it, push down on the accelerator the throttle performs as to be expected. I can push down WoT and the throttle body goes wide open and stays till i let off on the pedal.. If i turn the key to the run position it does the same throttle performs as to be expected untill i start the vehicle then i get engine failsafe runs like poop and will do nothing. I do not want to throw a throttle body at this without knowing it is for a fact bad. I have had zero problems leading up to this. I did pull the TB over the weekend and do a decarb on it. I put it back on and had no issues It was idling low. I have tried to follow the relearn process meaning. Clear the codes, unhook the battery negative, touch the negative to the positive terminal, let set for 6minutes, rehook battery up, put key into the ignition then push accelerator to the floor, turn key to the on position, push accelerator to the floor, turn key to off then start vehicle, stays in safe mode...My concern is that he cooked the pcm when he unhooked it at the fire wall without clearing the battery first, why else would i have two sets of codes P0352/ p2104 / p2111 / p0353 / p2104 / p2111. It repeats twice just like that.
The AC Tech was telling me that he believes the PCM is bad as he could not get the AC to fire off. The compressor clutch is good, its charged, he is not getting signal to the hot side switch. We even put in a new switch to verify switch was good. He put his little relay hack tool on it and was able to get the compressor to work. Which is odd my compressor was working this weekend but it was stuck in the Red on the high pressure side. .
Seeking guidance
The AC Tech was telling me that he believes the PCM is bad as he could not get the AC to fire off. The compressor clutch is good, its charged, he is not getting signal to the hot side switch. We even put in a new switch to verify switch was good. He put his little relay hack tool on it and was able to get the compressor to work. Which is odd my compressor was working this weekend but it was stuck in the Red on the high pressure side. .
Seeking guidance