Wont idle at first i got 1391 so i change both the cam and crank senors. then i got codes p0353 and p0357. so i changed the 2 coils. it still gave me p0357 after that so i switched 3 and 7 and it gave me p0353. So i took that coil back and got another. i put that coil in and got the p0353 and p0355. So i changed all the spark plugs and now I'm getting p0353, p0355 and p1391. I m lost any help ... could this be the PCM going out and its just throwing random codes at me????

 

no one can help me with this....

 

Did you reset the PCM when you replaced the sensors? Those are coilpacks for the plugs right? The 4.7 doesn't have a distributor and wires correct?

 

yes i have reset the PCM and since doing that now it only give me bad coil codes .... today i got p0351,p0354 and p0353. could it be the TPS? and yes those are coil packs not a distributor

 

TPS shouldn't cause all of those codes. Could be a PCM issue. Try swapping them to the other bank of cylinders and see if the codes follow the coils. If so then they need to be replaced. Where did you buy your replacement coil pack?? Make sure you are getting good quality coil packs, not worth being cheap on those!

 

well still no luck... it will run at about 1500rpm anything less and it shakes and misses and dies.

 

Did you swap the coils to the other cylinders? Have you checked the wiring harness between them and the PCM? Are they on any type of relay? Have you pulled the plugs to see how they look on those cylinders? Still the same OBD codes?

 

so since last post ive tried a new PCM, checked wire harness, checked compression, checked spark, swapped coils around, and checked timing chains and still no luck on idleing. When i swapped coils it gave me coil 8 was bad so i swapped it with 6, cleared codes , started it (still wouldn't idle) next code came up that coil 5 was bad.... any help would be appreciated