A lot Of Engine Codes please help guys

[Jay 3rd]

ok so i have a 99 solara sle v6 it went from only cylinder 4 and 5 misfire... to changing only cylinder 4 spark plug (used ngk iradium) now when i took it to autozone. its pulling codes... now also i already put fuel injection cleaner in.. but at the same time my fiance did also. so 2 bottles of gumout fuel injection cleaner within an hour.. maybe that could mess it up?

p1133 - Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1(Rear Bank)
p0305 - means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #5
p0304 - means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #4
po300 - Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly
po171 - Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.
Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.
SymptomsYou will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

A code P0171 may mean that one or more of the following has happened:

•The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
•There could be a vacuum leak downstream of the MAF sensor.
Possible SolutionsPossible solutions include:

•In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
•Inspect all vacuum and PCV hoses, replace if necessary
•Check for a dirty fuel filter and proper fuel pressure

i know most of you know the codes and solutions. i just posted it for future references for anyone doing a search...

but fellas please. i only had this car 2 months and i have no money for a automechanic unless its like under the table..
i was told change my fuel pump, fuel filter and fuel regulator???
im just wondering why after i changed one spark plug i got more codes up.. any answers will help guys i really appreciate it..
im hoping i dont need to dump too much money in this car cuz i really dont have it

[ThatVietGuy]

Could be the coilpacks or even something as simple (relatively) as replacing all the spark plugs.

But I'm thinking it's the coilpacks.

[Jay 3rd]

lol i hope not they are like $80 a piece

[Eye8Pussies]

if it's the coilpacks or the sparkplugs, you won't be getting lean codes, you should be only getting rich codes, which would make sense with all the misfiring

the problem is most likely either your MAF sensor- dirty or not working, or more importantly- check for vacuum leaks

when you get rich and lean codes, misfire codes- and more importantly- RANDOM misfire codes, it usually means that the ecu is going nuts trying to adjust for out of whack sensor readings, which is usually caused by messed up MAF readings, which can be caused by the MAF itself, or from additional air being added into the combustion post-MAF

[Jay 3rd]

that sounds reasonable... so i guess ill look into that tomorrow.. thanx

[Jay 3rd]

ok guys tomorrow is pay day.. so im getting the other 5 spark plugs, should i get new spark plug wires? im also getting MAF cleaner. and the intake manifold gasket.. im gonna have to take it off cuz i dont kno what tools to use cuz i dont see how a swivel would work and no one has a tutorial. i just keep seeing people say its easy u dont need to take it out and other people saying its hard take it out.. before i start spending all this money.. any suggestions? cuz im tight on money as it is. this is gonna set me back doin this.

IF ITS NOT THE MAF SENSOR BEING DIRTY should i just buy a new one or replace other parts?

[ThatVietGuy]

Just clean the MAF first and work it out from there.

[Jay 3rd]

ok im still going to but all the plugs though cuz when i took the one out they look like the ones from 99 lmao

OH BY THE WAY i live in PHX AZ so there is a lot of dust so hopefully that is the problem

[Jay 3rd]

so there is no advanced autoparts in AZ they only have checker and autozone.. which both dont carry mass air flow sensor cleaner but they do carry this http://www.autozone.com/autozone/access ... 19711_0_0_

is this ok

[dug320]

Before you get too involved. Try clearing the codes and then see what codes pop up. At the very least it will produce the same codes. You may get lucky and get the true code.

[Jay 3rd]

ok... so i only changed 2 4 6 spark plugs... i can not for the life of me get 1 3 5.. i do not want to remove the intake manifold... is there any tricks someone can share please.. i cleaned the MAF sensor and unplugged my battery for like 20 minutes.. the check engine light came on blinking still within 2 minutes. now i do have like a stutter when i push the gas pedal, definitly lack of power.. almost like a losse vaccum but i cant find it.. any other suggestions? i really need to change the last 3 spark plugs cuz the front 3 were horrible lol. so any tricks or tools anyone can recomend would be great. like how did u reach in and get it at what angle cuz i tried multiple

[dug320]

There is no special trick other than pain management. You will bash your knuckles and get a nice bruise on your forearm. The middle one is the worst. Make sure you have a socket with the felt washer inside to grip the plug. Put the plug in the socket and attach the socket to an extension. Tighten by hand (to ensure no cross-threading) and then tighten.

Do it when the engine is cold or you will add some nice burns to the other injuries.

[Jay 3rd]

just wonderin what kinda tools you guys used.. cuz i dont see a normal ratchet workin, .. i bought this stanley ratchet where even the handle twists for hard to reach spots but u need levrage.. so just wanna know what everyone else used

[Eye8Pussies]

I personally always just remove the intake plenum, because for the time that it takes to maneouver the ratchets in and out, I can get hte plenum off and back on already. But for people who do go with the ratchets, most people say that two bendy joints are required to get in there....

[TheGreenDutch]

Swap around the coil packs...I had the same problems before. Replace plugs, spark plug wires. Make sure there are no open wires touching...make sure all vacuum tubing is good and in the right spot...