Either way I'd like to resolve of this myself, if possible. Injectors not spraying as the should could also cause lean conditions and the random misfire. So my untrained mind doesnt think the intake should be affecting it. I have be driving my truck for the last three months and the lite go off on it's own and comes back on it's own. It could be close to failing.
If they have 140k miles, I replace them all. Letting the engine warm up to this temperature, before continuing to the next step, will ensure the accuracy of your test results. Non-consent will result in ComScore only processing obfuscated personal data. Posted on Sep 30, 2009 chevroletforum. I gased up on that trip and was hoping I just forgot to put the cap back on! It also throws the codes to let you know that it has done this.
Amazon Web Services This is a cloud services platform that we used to host our service. Could that be the problem i am having. If you haven't changed your fuel filter, I would start with that since it's pretty easy. If it's low, or spikes downward, you've got a clogged fuel filter or weak pump. Dec 02, 2015 the three failure codes you retrieved point to a vacuum leak from intake side of engine, check intake manifold with some engine starting fluid sprayed from outside around all sealing gaskets and if engine speed goes up or down noticably that would be your leakage area, also the mass air flow sensor being dirty would cause tthat and last a faulty fuel pump, not giving enough pressure but ok with volume amount, both p0171 and p0174 indicate a lean condition from each bank.
Pick up the truck drive it home, it is starting great at this time and then the lite comes back on the next day as i am driving to work. . Cylinders 2, 4, 6 and 8 V8 5. There may be other very specific or common issues that other motorists have experienced with your car. One of the most common trouble codes with the Chevy Silverado is the P0171 code. Google Charts This is used to display charts and graphs on articles and the author center.
Too many factors in this issue to hammer one out! Have to use starter spray to start and runs fine. When it ages, it rebounds less and less, and you get metal contracting when it is cold, and stiff seals, and on a cold start, the gasket seal eventually isn't good. There's a stock box on there now, but thats not to say he didn't demod. HubPages Traffic Pixel This is used to collect data on traffic to articles and other pages on our site. Related: Categories , Tags , , , Post navigation.
I find it's best to take it off and spray it with electronics cleaner or brake cleaner. HubPages ® is a registered Service Mark of HubPages, Inc. If this condition is found, reposition and shield the harness to prevent a repeat concern and repair the connections. ? I didn't do a great job with the troubleshooting and started swapping the hard-to-get-to parts parts first. Took the car to my mechanic and he told me it could be one or two things bad - first the fuel pump was bad or two the fuel pressure regulator was bad or both.
Nov 29, 2015 p0171-- system to lean bank 1 ----p0174-- system to lean bank 2. Sometimes for days staying off and than on for a day or two and than off again. Say Media We partner with Say Media to deliver ad campaigns on our sites. Akismet This is used to detect comment spam. Usually, the fuel pump is main cause.
Creating the Rich Condition can be accomplished by spraying a little bit of carburetor cleaner into the intake manifold via a small vacuum hose with the engine running. . If a fuel injector concern exists, it is possible to misfuel an entire bank of the engine, causing multiple cylinders on the same bank to misfire even though the root cause is a single fuel injector. If the fuel pressure is measured very quickly, then replace the on the fuel rail. It's possible but highly unlikely that P0171 and P0174 codes are the result of faulty O2 sensors.
. If the pressure takes some time before it stops, then the check valve in the pump is sticking open. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. . Some good tests: At wide open throttle have a buddy hold and read the scan tool the o2 sensors should be pegged rich.