My driving conditions are about 70% city, 30% highway, which I think is a common ratio for most of us. Since my truck threw the P0174 code in August 2008, I have searched the ends of the internet for a fix. The isolator bolts may still be clinging, so keep the socket on hand to loosen any clingers. Repair or replace as necessary. What other parts do these codes indicate should be replaced? I need help with this code I know its a lean issue on bank 1 but what r the steps to eliminate things I already tried replacing the intake plentum gasket what else can I do? Remove the two screws that hold the pad to the firewall.
The connector may have a removable cover. The remaining holes in the plenum are for the 8 isolator bolts. So, what could possibly be causing this? Basically, you want this on hand to blast any dirt and gunk out of the electrical connectors you'll be disconnecting. And lets face it, if the service engine light is on then you need it now! There is two pieces, a top cover with one big silicone o-ring gasket and a lower half with six smaller silicone o-rings for the individual intake ports. Check entire system for vacuum leaks. The truck is still running as well as the day it was repaired back in 2008.
Remove both and mark them off. It is primarily intended for 1981-newer Ford trucks but most likely also applies to other Ford models and years. In the next section we'll explore some of the common areas these misfires live in and in the process we'll find out what causes a misfire condition. Cuz of the intake wouldn't match up to the air intakei had for my truck. Iam going out to the garage to clean the maf sensor and check the crankcase vent tube, where is that on this engine? If air filter is okay, go to next step.
Testing the fuel system components, that could cause a misfire can also be easily tested. There are quite a few, so do not lose any. There is a sensor under the plentum dead center under plentum, on top, in middle of the block. Leave the nut on so that you don't lose it. I will try all the things u sugested tomorrow morn and will be looking forward to your answers to my next questions tomorrow morning or mid day sometime. When the engine is operating, the fuel vapor is purged from the carbon element by intake air flow and consumed in the normal combustion process. You want to cut it so that you will have room to reach around the back of the plenum.
And the O2 sensors were all shifting back-and-forth quickly, just like you'd expect a narrow-band O2 sensor to do. Testing a misfire code P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 can be quite a challenge, since so many different things can cause a misfire on your 4. A misfire condition, in plain English, describes an engine that is not running on all cylinders in your Ford F150 or F250-350, Expedition, Excursion, Crown Victoria, Thunderbird, or Mercury Grand Marquis, Cougar, etc. No test procedures have been omitted. Inspect pins for damage and repair as necessary. They will provide valuable info! Possible causes are as follows:? Im going to replace my lower and upper intake seals like he says above.
I ordered these from www. Ensure all accessories are off and engine is warmed to normal operating temperature. At least theres one more smart one out there and not someone that thinks they know it all like people that work in the parts places and some dealers. Remember, these are manufacturer specific codes only. There are 6 sets of holes. In particular, I've found that Motorcraft spark plug wires and spark plugs do an excellent job of keeping the engine running smooth. Jul 27, 2009 The evaporative emission system is designed to prevent fuel vapors from being released into the atmosphere.
This bracket is fastened onto a post that sticks out of the plenum. If resistance is more than 10,000 ohms and idle speed is normal, go to step 30. Check cable and throttle body linkage for binding or interference. Inspect pins for damage and repair as necessary. This test is used to diagnose the following: Throttle linkage. The codes are listed seperately based upon fuel delivery type.
Attach vacuum pump with gauge to carbon canister hose port. This is not meant to be a substitute for information in the factory service manuals or the product service training manuals. Pull that out of the way, you will have to pull the windshield washer hose through it, just disconnect it on the engine side, now you have access to the plenum. We have had weather fluctuations from below freezing to mid 80s, and it appears that the new isolator bolts are holding strong and nothing has warped. The intake will be fine. If anything, more city driving means more stress on the engine, so the fix is definitely holding up.
Ultimately it is your money, so you have to decide how to spend it. If you don't want to do it yourself, a shop should charge about an hour and a half, plus the codes must be reset and the van driven until all the monitors are ready. Carefully maneuver the plenum out, and do not bump or scratch the intake manifold because it is made of aluminum that can be easily damaged. They come up easily, but it's that first centimeter that is difficult to move. Can that be the problem? So, I decided that I would attempt to replace the isolator bolts and intake plenum port gaskets on my F150.