Double check to make sure the vacuum line behind the intake manifold is installed.
Have you checked the brake booster for any leaks?
Have you checked the brake booster for any leaks?
Do you mean the g/s MAF readings? I just got my scanner and am learning how to use it.Try to do a vacuum leak test. Heat some mineral oil and have a hose plugged into a glove after the MAF sensor and blow the smoke into the system. Any leak will be visible if smoke is getting out of the engine. I'd doubt the cheap MAF sensor from amazon to be honest. If you have access to an OBD2 scanner, the MAF reading should be around 5 when idling at 700RPM and around 11 when idling at 2500rpm. Give that a shot.
My last g/s reading with the cheap sensor were;Yes, it should be in units of g/s. Sorry, I gave you the wrong values:
Idling: A/T around 2 g/s.
2,500 rpm: around 6.5 g/s.
The MAF values look alright to be honest. That cannot be true as to complete the evap, the car has to be sitting for at least 8.5 hours after a soak. Is your OBD tool working properly? If you disconnected the battery and the codes have been cleared, your drive status will not be ready. You have to do some predefined driving patterns to fix that. I would be skeptical to be honest but I am not expert. I suspect that the soapy water fixed the leak but I suspect that once the water has evaporated, the leak will manifest itself.My last g/s reading with the cheap sensor were;
Idle 2.87 ( I think the idle was like 800 rpm)
2500 RPM 6.6
Just for curiosity sake I plugged the scanner into my wifes Miata that has a 2 liter engine;
idle 2.89
2500 RPM 7.8
I'm at 1000 feet altitude at about 70 degrees temp if that makes a difference.
Unfortunately the old sensor that was in the car does not appear to be a DENSO, at least it does not have any writing on it.
As far as the injectors are concerned, I purchased a set from amazon for $40 but ended not using them. They have the Denso markings but are 100% counterfeits. Most of the reviews said that they fail prematurely and some of them failed within a year. I ended up using genuine denso ones. I am not sure the route that you want to go but one denso injector is more expensive than a full set of 4 counterfeits.I did this for a leak test. I plugged off the exhaust muffler output and the air intake tube to the throttle body. Disconnected the vac line to the EVAP and plugged it too. pulled the vac hose off the brake booster and plugged in an air line. I then hooked up my air compressor and regulator and pumped in 5 psi through the booster hose directly into the intake manifold. Then I soaked everything with soapy water. Was also looking for a leak at the exhaust manifold, I read this could be my issue. Only one leak found. Lots of bubbles at the #2 injector. I was going to build a smoke pump but figured this would be easier to try first.
Here is the weird part. I need to drive the car until the new $30 Ebay fuel injector set comes in. I know they are most likely counterfeit, but many reviews say they worked and a few said they are crap so I'll take the chance. I also ordered additional injector seals. I also read that you should disconnect the battery for an hour or more to reset the computer, so I did. After I buttoned it all up, I drove my kid to the airport and put an hour on the car. I was watching to see when the CEL would pop back on but it didn't. When I got home I plugged in the scan tool and it had the green light! No stored or pending codes, and IM says its ready status. WTF? I'm going to run it down to emissions testing in the morning and see if it holds long enough to pass. Maybe while I was pushing on the injectors I got it to seal?
The reason I thought the MAF sensor was bad is because when I Googled " what should a MAF sensor g/s reading be" it comes up with this;The MAF values look alright to be honest. That cannot be true as to complete the evap, the car has to be sitting for at least 8.5 hours after a soak. Is your OBD tool working properly? If you disconnected the battery and the codes have been cleared, your drive status will not be ready. You have to do some predefined driving patterns to fix that. I would be skeptical to be honest but I am not expert. I suspect that the soapy water fixed the leak but I suspect that once the water has evaporated, the leak will manifest itself.
I guess I'll try the counterfeits and see if they work. If they fail I'll buy DENSO or a reputable reman. Where did you buy your DENSOs to insure they are real?As far as the injectors are concerned, I purchased a set from amazon for $40 but ended not using them. They have the Denso markings but are 100% counterfeits. Most of the reviews said that they fail prematurely and some of them failed within a year. I ended up using genuine denso ones. I am not sure the route that you want to go but one denso injector is more expensive than a full set of 4 counterfeits.
I still have to replace the leaky injector seals. I do have the cheap fake Ebay injectors coming. Would like to use the scientific method and just replace the seals first to see if that fixes it. Then even if that does fix it, install the new injectors and see if they work any better.I've glad to hear that it worked out for you. I think that the EVAP is the only exception for passing an inspection. P0171 is one of the hardest code to fix and it can be a lot of things in the engine. Use the monitor and put the values down at idle and at 2500RPM and someone who knows more than me can help you out.
I don't see anything on this engine that looks like an EGR, where is it? When I look for it on Rock Auto, they don't seem to have one, unless its called something else?I think the DS already replaced the intake gasket with the updated gasket. Yeah, fuel injector problems will cause P0171 for sure. Rough idle could also be motor mounts or EGR system problems.
That's because I've been working today on a Gen 3 Camry's EGR system and had that in my brain, duh! You're correct, no EGR on our Gen 9 Corolla.I don't see anything on this engine that looks like an EGR, where is it? When I look for it on Rock Auto, they don't seem to have one, unless its called something else?