left bank lean x 2
#5
Originally Posted by 06fx4 L2
just replace every sensor.. thats the way your supposed to diagnose a problem
JOSH
JOSH
Don't do that...it's unecessary and costly.
You can try a few things...
Try replacing the fuel filter. That is cheap, easy, and you need to do it every 18-ish months / couple years. It's good for fuel economy, blah blah, etc... $$$ = $5 = NEED IT ANYWAY
Check your spark plugs. Make sure they are all gapped to .056" apart. Replace spark plugs if regapped and if plugs look good with no deposits or discoloration. $$$ = FREE
Thirdly, you got the "Bank 1 & 2 = Lean" code with a Check Engine Light...get a small bottle of propane, start your truck, and let the gas leak out of the bottle. Put the gas close to the intake manifold of your engine, right where your 1st & 2nd piston are (if you don't have a Haynes manual, borrow one, buy one (ur gonna use it later), or ask someone on here where it is. I believe it is the front right 2 on the truck (looking forward from the inside the cab). If you truck begins to IDLE SMOOTHER...you have a gasket leak. Not critical, but you will need to eventually need to replace the upper valve cover gasket.
$$$ = Cheap insurance to correctly diagnose the problem using about $6-7 dollars worth of propane. It is cheaper than paying $50 / O2 sensor...which x 3 = $150 + TAX. The valve cover gaskets costs $10 plus a couple dollars for RTV sealant...
TRUST ME...do not replace all O2 sensors for craps and giggles. Your stock sensors are good for at least 160,xxx - 200,xxx miles if not more.
Valve cover gaskets are a big time problem for rangers...
From 1995-2000 with the 60* OHV blocks, Ford used paper gaskets!
Pete
#6
Originally Posted by jtfoxman
I would go with the o2 sensors. I would think the fuel filter would make both banks lean.
The fuel filter would starve the entire engine. Not just 2 single banks...
Another option is to use the carbon despoit remover (Fuel Injector Cleaner). That is if you FI are dirty, but if you replace a fuel filter this will change and slightly improve. You could do that as well.
#7
#8
i was joking about just replacing sensors, but it seems that is the trend on these forums. people just start replacing stuff due to others gueses, which alot of the time goes no where except cosing money. now if you had an 02 sensor open circuit code or something i would say thwo in an 02 sensor (just because me wasting my time to test the wires is not worht it when most of the time is the sensor) but when you just have a bank "x" code lean or ritch its usually solved predy ez.
i dont/havent used propane but it will work, i prefer using brake cleaner due to the fact i can pin point exsactly where i want to with the litle straw attachment. but start by listening for a sucking sound itl be like a hiss. try to isolate the area the hiss is comming from and then use the brake cleaner/propane/carb clleaner/ ex and spray in the area till the idle raises OR runs ruff or runs better (basically untill it changes) now if no external leaks (meaning from manifold directly to outside air) are found that means you mostlikly have a crankcase leak ( PCV system) try pinching off any and all PCV hoses from the intake systematically untill the idle changes gets better and so on..
good luck, JOSH
i dont/havent used propane but it will work, i prefer using brake cleaner due to the fact i can pin point exsactly where i want to with the litle straw attachment. but start by listening for a sucking sound itl be like a hiss. try to isolate the area the hiss is comming from and then use the brake cleaner/propane/carb clleaner/ ex and spray in the area till the idle raises OR runs ruff or runs better (basically untill it changes) now if no external leaks (meaning from manifold directly to outside air) are found that means you mostlikly have a crankcase leak ( PCV system) try pinching off any and all PCV hoses from the intake systematically untill the idle changes gets better and so on..
good luck, JOSH
#9
Yup, that's another method. Sometimes it can get a lil messy, but still the same concept.
My truck ran smooth as well, and it idled well and I thought the same thing you are thinking now. I had a slight power loss, but not significant to really be a big deal. I depends, but Ford DID use paper gaskets for a long time. It is worth testing and seeing if that is a problem after you clean your fuel system...
And yea, I thought you were serious. A lot of people on here really don't know how to diagnose problems, and just start replacing right & left. *shrug*
What have you done, thus far?
My truck ran smooth as well, and it idled well and I thought the same thing you are thinking now. I had a slight power loss, but not significant to really be a big deal. I depends, but Ford DID use paper gaskets for a long time. It is worth testing and seeing if that is a problem after you clean your fuel system...
And yea, I thought you were serious. A lot of people on here really don't know how to diagnose problems, and just start replacing right & left. *shrug*
What have you done, thus far?
#12
Originally Posted by AgPete139
The fuel filter would starve the entire engine. Not just 2 single banks...
Replace the fuel filter. Clean the MAF sensor. Check for vacuum leaks.
#14
So i was checking all the hoses and the one between the maf and the throttle body appeared to be loose....unplugged it and truck started running extremely ****ty (worse than it had been) plugged it back up and pulled the intake off...cleaned the throttlebody and reset the computer.....gonna drive it around for awhile and see if thats the problem
#17
Originally Posted by mersingt
where is that at....I dont have a manuel...
https://www.ranger-forums.com/forum2...ad.php?t=46971
#18