Golf VI R :: MAF Readings To Be Higher Or Lower
May 29, 2013
What exactly influences MAF readings to be higher or lower? For example I am running similar boost and timing to other Stage 1 cars but my MAF peaks at 238 g/s while others are in the 250's I have heard that you can relate MAF to power but its not exact. I have a Forge Twintake and Stage 1 tune, I have been looking at peoples logs all night and I don't understand why my MAF is reading lower than other Stage 1 and 1+ cars.
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Shifting into gear was a problem occasionally, but lately, within 15 minutes of driving, I start feeling the shifting into higher or lower gear getting stiffer and will not shift into gear.I've shared the problem with couple of my mechanics and it left them puzzled, since there are no leaks or low levels of fluid.
B2600i '92 cab ....
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I have begun to notice that when I start my van each morning for the first time that it is reving at a higher RPM then it did back during the winter. During the winter it may have been around 1000rpms at start before lowering down after a few minutes. Now it is starting at about 1500 and then returning down to the lower level after a few minutes of warming up. Could the change in outside temps cause this?
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I have a camry 2000 automatic transmission with 150 K on it. For last few months I am having this sporadic issue with it having difficulty to change the gear from lower to higher gear(from the first to second, i guess). It goes like this, when i start speeding up the car, its having difficulty to move to higher gear, it just revs up to like 5 - 6 K rpm and with a jerk it shifts the gear. And at the same time check engine light goes on. And during the time this check engine light is on, it does this same thing a couple of times or so.
Then after some time the check engine light goes away and the car runs just fine without any issues for some tine and then the same thing happens again and after some time the issue and the check engine light goes away and the car runs just fine again. this keeps happening every few weeks. So I took the car to the mechanic (check engine light has gone away at this time, who told the code was showing some "speed sensor" issue and they replaced this. After that the car ran just fine for a couple of months. But its starting to do the same thing again.
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I got this "Failed MAF" along w/this "circuit condition or idle speed is higher/lower than expected" codes when I hooked up my car, what does this mean????
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I have a 1996 escort wagon with strange auto transmission behavior. Sometimes during the summer months but mostly during the winter; the transmission will start off in 3rd gear from a stop and won't go any higher or lower. If I drive it around for a while, it will suddenly shift into 4th then the transmission will act normally for a while then for no reason will just suddenly start off in 3rd gear from a dead stop. It has been doing this for about 8 months now. 146k miles. I have tried shifting through all the gears manually. It will drop down into first when I put the lever there, but when I move the lever back up into drive, it goes right back into 3rd.
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My Subaru want to stall when it shifts from a higher to a lower gear when driving up a grade/hill. Also does the same thing when pulling out from a stop sign or traffic light. You need to pump the accelerator to get it going.
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My sport trac has just started having a very strange problem. When I start the truck none of the gauges on the dashboard work... not the indicators or the RPM or the speedometer. The gas gauge will visibly move higher when I brake and lower when I accelerate.
But a few min after I start driving everything pops on. What could be causing this?
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My CC had within the MFI a screen where you can see the tire pressure of each tire. I know my GTI has the TPMS sensors as part of the ABS, but is there no visual menu? I've read the book and there doesn't seem to be a menu. 2013 GTI Autobahn...
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My 2006 Elantra (54,000 miles) shifts really, really hard when it's not cold and passes through the 35 mph range -- hard enough to make you glad you've got your seatbelt on. I've taken it to my regular mechanic and now it's in an automatic transmission shop.
My mechanic changed the fluid (twice), and took it through a "learning sequence". The fluid didn't look that bad and he reported that there were no codes to work with. He thinks I'm going to have to get a new transmission.
The AT shop has confirmed that there are no codes to work with and that the problem begins at 143 degrees. They tell me that the transmission is shifting into a higher gear without releasing the lower gear. They tried replacing a couple of solenoids, but that yielded no change in behavior. Now, they're telling me they "think" I need a new computer. I'm just afraid the trial & error approach is going to cost me a boat-load.
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Sometimes I will stop at a light and my idling rpm will go from 600 (usual rate she idles at) to about 950. While this may seem inconsequential in the grand scheme of things, it's noticeable enough that it seems like the car wants to go. It'll lead me to depress the brake more. You can also hear the higher pitch of the faster turning engine (it is a 50% increase in speed). This will happen at random times so I have not been able to pinpoint if it is caused by a particular driving style. ECM for this?
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I noticed my engine would rev up higher before up shifting which is what I always wanted in "D" after I took back my car from the 20K service. Drivetrain Reprogrammed. Now my car is feels a lot more responsive than before.
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My Dad's R32 is revving at a higher rpm than it should at idle. It happens randomly for about a minute and then goes away only to return later. He took it to the stealership, but they will not facilitate because they could not replicate the problem. I'm thinking it is some kind of vacuum leak.
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I'm fully equipped with apr stage 2 with all the hardware (carbonio intake and full apr turbo back exhaust). So anyways everytime I'm in the higher gears (3-6) I get this rpm lag/stutter, what the issue can be...
Here's a link to the video on YouTube of what's going on [URL] .....
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So it is no secret that our fans go out and need to be replaced.
There are suppose to be two temperature thresholds, the first at which the fans turn on at LOW speed, then another higher threshold where the fans turn to HIGH speed.
My fans basically only kick in at the higher temp threshold and into HIGH, the cooling system is skipping over the LOW threshold and fan speed.
Would this be an issue with the fans or the controller?
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1998 Subaru Forester with a weird clutch problem. Clutch works fine in cold weather, but for the last 3 summers when driving in city traffic, the clutch gets spongy and starts to catch lower and lower to the floor. Car has about 125,000mi bought it 2 years ago and don't know when or if the clutch was ever replaced.
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Just hit a fantastic Minnesota pot hole. Have a slight shimmy now at higher speeds, feels like its from the rear. Don't see any obvious dents in the rim, what else could I have bent back there? I'm wondering if this is psychosomatic and our roads just suck right now or if I really damaged something.
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I have been looking around for some boost information. I have come across a few threads that have boost graphs, but the images are no longer available. I have tried to get a hold of some of the posters, but no luck.
I only recently hooked up a boost gauge and have been monitoring my boost more. I had a slight feeling before I hooked it up that I was losing a little boost at higher rpms. Between 4500-5000 my boost drops from 18 to 15 and then from 5000-6000 it drops to about 10. I know it's sometimes normal for boost to drop at top end, but I'm not quite certain it's supposed to be that much.
I installed the Spulen Boost Pipe Kit hoping it may make some type of difference, but it's the same. What it might be? I have checked all my pipes as best as possible, but couldn't find anything.
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I currently bought some H8 35watt yellow fog bulbs for my 2012. They sent me 55watt bulbs. Would the higher wattage hurt anything.
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My 04 .:R temp is going up when I sit at idle for a few minutes. The low and high speed fan are working, I just check to make sure that they were. The temp goes up then the high speed fans kick on. A few minutes the fan kick off then the temp drops. The stat isn't more then a year old.
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I have an APR Stage 1 flash done about 3 months ago and I absolutely love it and never had any issues.
I always leave my car in program two which is the 93 octane. I was driving home yesterday and when I was in the higher gears and accelerating in like 3rd or 4th and got the rpms up to 3500 to 4000 the car would stutter pretty hard. At one point it stuttered like 3 times in a row and then the check engine light blinked about 10 times and went away. When I got home I put the car back into stock mode and tried the same thing, but it ran smoothly with no issues.
Experienced this with the APR stage one flash. I'm thinking maybe it could be bad gas or the program didn't get set correctly, but not sure. I am going to put it back into the 93 program today and see if it still does the same thing.
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