GTI 337/20th Anniversary :: 2004 1.8T - Half Throttle Boost / Little Hesitation At 5 PSI
I have a 04' Jetta 1.8T (AWP) my mods are APR Chip (91octane program) Forge 007 DV, APR TIP, NGK spark plugs, catback exhaust. This issue I am having pretty much started when i got it chipped and I've got it reflashed and I've even talked to people at APR and they are saying that it couldn't be a software issue. Anyhow the problem I am having is at partial throttle my car kind of hesitates a little at 5psi and when i let of the gas the car kind of hiccups a little.. but if i really punch it in every gear i hit 21-22psi no problem, the problem happens when I am driving normal and its really annoying.
I have switched several different N75 valves, I am running the stock one now, I've switched different DV's, i have switched my spark plugs and even put at APR turbo inlet pipe and i have checked for boost/vacuum leaks, I have no CEL...all this hasn't resolved my problem.. I don't know what else to do..
I was thinking about switching my MAF to see if it works, but then again if it was my MAF im sure I would have a CEL. I also was thinking about putting my N75 valve backwards even the DV backwards to see if it works?
Celica :: 1992 5SFE Auto Sputters At Half Throttle
My 92 Celica 5SFE 2.2L auto sputters at half throttle. But if I release gas pedal, performance normalizes. I already changed spark plugs cables, ignition coil fuel filter, spark plugs, cleaned injectors, replaced timing belt, engine starts right up and idles a bit high, around 1300 RPM when cold in Park, then when warm 800 RPM in drive. I don't know if it's an electrical issue or a vacuum related issue, spark plugs get carbon fouled after driving like this. I'm tired of having all the newer cars pass me by and my car "running" on 3 pistons.
View 6 RepliesGTI 337/20th Anniversary :: 1993 - Sputters From Idle Up?
I've been fixing some boost leaks and changed "race" valve out to the stock "f" type...drove down road it's awesome put it back into 93 mode apr chip give it hell in 1st and 2nd then turn onto another road to repeat and when comes under boost it sputters...like a bad coil pack but wouldn't that mean it sputters from idle up?
View 3 RepliesGTI 337/20th Anniversary :: GLI Sputters And Surges When Driving Over Bumps
I'm aware that this is a common issue for the MK4 and I'm looking for some closure on what the exact issue could be. Whenever I drive my car on a bumpier back road I feel like the car is sputtering and surging whenever I hit a bump and it's very noticeable with the exhaust on my car. Once on the highway the car lost all power for about 3 seconds and then it started working again. I think it might be the coil packs or the fuel pump but I don't want to buy things the car doesn't need. Where to start?
View 1 RepliesGTI 337/20th Anniversary :: Cranked Half Way Started And Shut Down
So I was wondering, what my problem might be. I went to go start my car after work 3 days ago and it cranked half way started and shut down. The things that I have checked are fuses both at the battery and in the side panel, fuel pump relay... It clicks when I turn the key, fuel pump.. Its getting 12 volts when the key is in the on position. Now a buddy of mine had me roll down the driver window and arm the alarm then open the door from the inside and the alarm did not go off nor does the dome lights come on. And the the fuel pump does not prime. He told me its a food lever switch. It's not recognizing that the door is open and that it's linked with the fuel pump that's why it's not priming and it's not starting.
View 13 RepliesGTI 337/20th Anniversary :: Clutch Pressure Low - When Pushed Only Come Back Up Half The Way
Started losing pressure on my clutch pedal yesterday. When I would push in the clutch pedal it would not push back up to the reset position. It would only come back up half the way. Now today I have a steady ABS light and ASR light on. Checked for fault codes and found no trouble code. Checked brake fluid resevoir for leaks; still has plenty of fluid. Checked slave cylinder bleeder valve for leaks and looks dry. The only thing I think it could be is the clutch master cylinder. If I drive the car for a few minutes I am able to build pressure back up in the clutch, however the ABS light and ASR light still remain while driving. Turning the car off and back on again shuts off the light for a few minutes until I start driving, but the clutch pressure starts back low again.
View 3 RepliesGTI 337/20th Anniversary :: Radiator Malfunction - Hot On The Top Half And Cool At The Bottom
So basically a couple months ago I picked up a 03 20th and GTI, I love the thing to pieces, recently I've got into drive it and I can watch my temp gauge steadily climb to 90 and stop. (before I go any further, I haven't gotten any overheat warnings or anything like that, I've just noticed my car is really hot all the time and the temp gauge goes to 90 within a minute or so of driving but doesn't go over). heat works fine, I've gone in the engine and tested a few things, tested the fans by jumping the connections, my large fan is dead but the small works fine. to my understanding, the large fan isn't used much unless it's really hot anyway. so I removed it and continued trying to find my problem, I felt the rad after letting the car run for a bit, the top half was hot but the bottom half was cool, took the hoses off and flushed my rad thinking maybe something was clogging it, water ran through fine, so I put it back together, put new coolant and tried again. same thing. so I took it for a rip and came back, obviously, the top hose and the rad were hot, but the bottom one was kinda warm. I looked for answers online but I can't seem to find anything like what I'm dealing with. the water pump seems to be working fine, I'm not sure how much flow is supposed to be coming through the Small hose at the top of the reservoir, But I checked it and it has a steady stream coming out of it. I've worked all the air out of the lines as well. The car isn't overheating and doesn't really pass the 90 mark, fans almost never come on but the small one kicks into low when I turn the AC on. which as far as I'm aware is what's supposed to happen.
The car feels like its running hot, checked everything I can think of. rad is hot on the top half and cools at the bottom, coolant has a steady flow back to the reservoir. no actual overheat warnings, I'm just wondering if these cars run hot normally or if I should be concerned.
GTI 337/20th Anniversary :: Any Way To Tighten Lower Half Of Seat So It Does Not Move?
Whenever I take a turn my seat slides side to side, both bolts are tight in the front. Is there a way to tighten the lower half of the seat so it doesn't move?
View 1 RepliesGTI 337/20th Anniversary :: Hissing Noise When Let Off Throttle
So, when i throttle down i get a hissing noise, almost like a very small jet engine. then when i let off the throttle I get the psh psh psh psh noise and not the solid pssshhh noise. What might it be? I was thinking pcv breather, or DV, but i dont want to go just replacing parts. I have the 04 gli 1.8t ....
View 2 RepliesGTI 337/20th Anniversary :: Lost All Throttle And EPC / ASR Light Appeared
Getting onto the freeway, not putting the gas to the floor or anything, my throttle completely cut out on me and the EPC and ASR light came on. Turned off the engine, let it sit, and it fired right back up with no lights on.
Replaced the valve cover gasket recently and had a somewhat rough idle since, not sure if the coil over isn't all the way down but will investigate soon.
GTI 337/20th Anniversary :: P0172 - Hesitation When Start To Get Into Throttle
So my car is throwing a P0172 and when I start to get into the throttle, I get hesitation. I have replaced the plugs and the coil packs, and I tried unplugging the MAF which just made the car run worse. What could it be? Boost leak? Something else?
View 9 RepliesGTI 337/20th Anniversary :: Partial Throttle / Surging Usually In 2nd Gear
I've noticed this when driving for a while now but was never really sure what was causing it. It was usually in 2nd gear and the car would sorta surge on and off boost almost. yesterday i found out that it only occurred when i gave my car partial throttle. It would build boost, let off, build again etc. Full throttle and it was not a problem at all. My car is an 04.5 GLI chipped / 3" exhaust etc etc and would like to know what I can do with this problem.
View 4 RepliesGTI 337/20th Anniversary :: Power Will Cut Out When Driving With A Consistent Throttle Input
Mark IV GTI. Neuspeed intake, chip, exhaust. The situation is...
When driving enthusiastically, harder, and sportingly, the car runs beautifully!
When driving normally, such as highway cruise or lower speeds with a consistent throttle input, the power will cut-out. Then the max boost pressure will be approximately 3 psi until the key is cycled. Then normal chipped operation resumes. Since it is difficult to drive hard all the time, this circumstance comes up often.
There is a new N75 recently installed. The situation does NOT set off the check engine light.
I have noticed according to the boost gauge readings, it tends to happen between 10 inHg to 0 psi. Above or below that, don't recall it happening.
Mercury - Cougar :: Stalls And Sputters When Fuel Gets To Half Tank
I have a 2001 mercury cougar, every time the fuel gets to a half tank or below it stalls when going up a hill or around a curve, anytime u give it extra acceleration when it's a half tank or below it stalls and sputters, it's been in the shop for 3 months and got it out and ran good for a day now back bad I need a mechanics advice on what it could be other than fuel pump, fuel filter, o2 sensor, or plugs and wires... I've tried all of them...
View 1 RepliesPassat (B5) :: 1999 - Sputters When Given Full Throttle And CEL Comes On
A buddy of mine has a stock 1.8t auto with some miles on it. THe car sputters after you come off full throttle and then the check engine light comes on. we have replaced the blue coolant temp sensor and the 4 coils and plugs. car is still doing this.
View 3 RepliesPassat (B5) :: 1998 - Bucking After 4500 RPM At Half Throttle?
98 AEB just rebuilt the engine completely, put a K04-15 turbo on it along with a FMIC and a forge diverter/BOV. Everything runs great idles great. when i try to get into it it bucks at 4500+ rpm. when i baby it she runs great smooth sailing. Is this a fuel issue?
View 16 RepliesGolf IV / Jetta IV :: 2001 - Car Bogging Down At Half And WOT Throttle
I have a 2001 vw jetta 2.0 and I was accelerating on the interstate the other day and the car just started bogging down and now the car only accelerates slowly at partial throttle any more and it makes a loud intake noise and bogs down also the car idles bad and even at partial throttle the car struggles to get above 3k rpm, I scan for codes and got MAF, O2 sensor before the cat and camshaft position sensor, I replaced the camshaft position sensor and car still runs like crap, what is the problem??
View 4 RepliesFord - F250 :: 1985 - Half Throttle But Backfires
I have a 1985 Ford F250 with a 351 windstar in it. I just put a new fuel pump and fuel filter on my truck and it starts and drives but back fires really bad. Sparks are hitting just fine and I am almost positive that all vacuum lines are plugged in or plugged off. What it would be? What about the float could it cause that. Its fine at half throttle but backfires anymore than that.
View 6 RepliesPrius (Gen 3) :: Shudder And Vibration Occurs Between 30 To 40 Mph When Throttle Is At Half Way Point
Picked up a used 10 prius iv with 31k and have put 1200 miles so far. One troubling thing I have noticed is this weird shudder/vibration that occurs between 30-40mph when the throttle is at the half way point (area between the light green and dark green bar) Vibration similar to that of driving over the rumble strip on the highway but not nearly as harsh and the noise would be similar to when you have one rear window open in the car and it creates the pulsating wind noise.
It doesn't do it all the time and mashing the throttle seems to alleviate the problem. It doesn't happen so much when cruising around town but it happens every time I get near the top of the incline in our office park and the car continues to lose speed until such time as I get back on the gas but it continues to do it until I turn into the parking lot. Occasionally it does it when coasting down a hill with the throttle right near the point of crossing from light green to dark green on the screen.