tiger70h

P0135, for o2s heater circuit malfunction for all o2 sensors and p0327 knock sensort 1,2 circuit , low input. (i erase the codes but as soon as they come back my car starts acting up like bogging out and back firing a little

battousai

iTrader: (3)

did you try replacing the sensors?

THE SHOP

Heater circuit malfunction is a failed o2, and the knock sensors need to be replaced also (there under the intake its pretty simple) Fair warning you need to get the knock sensor harness from a dealer though 50/50 shot its rusted up.

QuickSilver

iTrader: (22)

I have a knock sensor harness if you need one.

DPRock

iTrader: (9)

I'd replace the knock sensor before id talk about replacing the o2s. The knock sensor will cause the engine to run rough somwtimes which can caus
e o2s codes.

ramairracer

iTrader: (13)

your wrong the knock sensor codes (po327 and p0332) wont set a heater code on an oxygen sensor..
id start with replacing both sensors and put some sealer around covers..
next the o2 codes wil lset if you have Lt headers. so those just need to be deleted..they have a heater in them to help the engine enter into closed loop mode....
my question is why go to a Ford dealership

Theblacknightls1

iTrader: (1)

I replace both sensor and wireharness code turned off than a couple of weeks later my 02 sensor got wet (A little splice on the wire) Started acting like a 4cyl for a moment, then it went back to normal, then through up the engine light saying i have a knock when really its faulty 02 sensors.. I reset the battery and it went away but i still need 02s.

DPRock

iTrader: (9)

I was wrong oops won't be first or last. I have seen knock sensor vacuum lines miss fire cause o2s sensors codes.

ramairracer

iTrader: (13)

yes oxygen sensor codes such a low voltage, high volatge, slow response, innsuficient switching. etc.
but heater codes are completely seperate

tiger70h

ok should i change the knock sensors first and then see what happens befor buying the o2s? cause thats what iam doing now ...... and is there two harness or jest one cause i know theres two knock sensors .....and should i buy all this from the dealer ? and i took it to that shop cause a FRIEND RECOMENDED ME its not really a ford dealer but thats mostly what they deal with but ya i spent a lot of money there and my car still was running at its best the last time i took out of there

THE SHOP

Harness covers both knock sensors, they don't affect each other sooner or later everything will have to be changed.

TXMaro

iTrader: (13)

If they couldn't figure something as simple as that out, I officially would not take my vehicle, Ford or not.. to that shop.