Lexus GX 2004-09 :: 2WD Starts Fine - Engine Begins To Skip After An Hour Or So Of Driving
Oct 8, 2014
4.7 ltr 2WD starts fine and while cold runs fine. Seems after an hour or so of driving the engine begins to skip. Will idle just fine but when giving gas the engine skips and refuses to accelerate beyond 1700 rpm. Had the cats changed 6 months ago. someone suggested the MAF sensor might be bad....so cleaned it. Still runs rough. I suspect it might be a sensor. If I leave the car overnight ...runs fine in the morning. Engine gets hot....begins to skip and cannot accelerate unless going down hill. Vehicle skips especially when under a load.
Does the MAF sensor have anything to do with this? Maybe it could be the Engine Coolant Sensor? Not sure what to do. Don't want to throw parts at it without some idea what is causing it. BTW...no check engine lights at all. And nothing showed up on the computer when it was running rough. Tech told me cylinders 2 and 4 were not firing properly but immediately after cleaning the MAF sensor the car ran fine for 4 minutes then problem returned.
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So I have this recurring problem where my passat will die while driving, and fail to start. Usually I know it will die because the accel. is sluggish and the power steering is dead (but no light) when i start it, but today that did not happen. It just died completely out of the blue.
When it dies, it cranks for a second, then stops and the dash screen/lights fade out. The most annoying part is that everytime, I get it towed, then it starts.
The first time it happened the dealer said nothing was wrong. It started for them fine. Kept it overnight, and was good next day. Died a month later from same thing.
Second time the dealer said the alternator and battery were bad, got both replaced. (about 6 months ago).
Today it died again, with no symptoms beforehand. Tried for a while to start it, no go. Nothing engine related worked. Auxiliary did though. Had AC / Radio / Hazards just fine, i only used hazards though.
Got it towed, and I myself went and started it right after it got off the truck, it started. Had to give it gas to get it stable, but it started. I had the dealer check it out, and they said they found 3 fault codes that they have never seen, then later told me they did not know, and didn't want to blame anything unless they were sure.
This was right in the middle of a vacation trip 2 hours from home, and I decided i should just turn back. On the way back I noticed that the AC, Cig Lighter, and Heated Seats were not working. On top of that the car felt like it would die at any moment. Almost no throttle, sounded very weak / quiet. And about 25min in the car started stuttering, like it was about to give up. I pulled into a parking lot and tried it 20min later, started completely fine. No sluggishness, but AC etc still out. After that I got it home fine.
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I just bought a 2006 F150 with the 5.4 triton motor. Under acceleration at around 40-45, the vehicle starts to skip and shudder.
Based on what I read online and the fact that I pulled a code for a #1 cyl misfire, I assumed that i just need to change the plugs, and I am trying to scheduule that now.
I just read another post about the TC not locking up due to needing the filter and fluid changed and a way to fix that would be to take OD off and see if it still does it.
When I drive with the od off, it does not do it but i am now confused since i got the one code for a misfire.
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'02 Ranger XLT, extended cab, 4X4, 4.0L SOHC, 5-speed manual, 114K miles.
Problem has occurred twice. After extended run time and engine fully heated, when I get home and shut it down, then attempt to restart within a short period of time, the engine starts very briefly, then begins shuddering violently and dies within a few seconds. Re-attempts to start result in a very shuddering attempt to run for a couple seconds, and then it dies. After a couple of re-attempts, it doesn't even attempt to start; just cranks over with no results. Has to sit about 7-8 hours before it will restart.
No OBD II codes; Passed, no codes shown. I purchased a crank position sensor, but haven't installed it yet: just a stab in the dark after hearing other people's experiences with other vehicles.
First occurrence followed a lengthy trip in heavy stop-and-go traffic. Shut it down when I got home, then attempted to re-start after a few minutes to run a short errand. Sat for two days without any re-attempts; then restarted and ran fine on first try a couple days later.
Second occurrence followed a couple hours of hitting yard sales with the neighbor, in which time I did not shut the truck down; just left it idling while we perused the sales, for fear it wouldn't re-start. Reckon it's a good thing I did, 'cause when we got home and I shut it down and attempted to leave again shortly thereafter, it malfunctioned as described.
Retries failed after sitting 4-5 hours, but after eleven hours of sitting, it started right up and ran normally.
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I just recently got 2008 gx470 as a college graduation present in May. Very exciting having a GX as my first "real" car!!
After driving a few months, I have noticed that my brakes are acting a little funny. Whenever I brake, the car seems to "skip" until I come to a complete stop. It's not a very serious problem, but more of an annoyance.
I took it to the dealership and they told me that my rotors are "warped" and need to be shaved down. They quoted me for 600-700 dollars for the fix...
I just hit 43k miles
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Past couple days my car has acted strange. Driving last night the check engine starts to flash. Car running smooth. I pull over and restart the car and all is fine. This morning while driving on expressway the slip light flashed 3-4 times and quit. This was on dry surface they car was definitely not losing traction.
Also it'll randomly flash message low key fob which it may be low but it only says it randomly like maybe 1X a month. I know this car is an electronic beast. Do you think my car battery is not supplying enough volts and causing these weird issues?
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I was wondering if a bad/leaking steering rack would cause a clunking sound when turning. Also if the rack is bad how many hours should it take to change?
When I am making turns I hear a clunking noise coming from the passenger side and the boot has oil on it but the fluid in the reservoir doesn't seem low.
When I am driving there is a lot of vibration and when I go over 60 the front end starts to wobble.
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We have base line 2004 Cavalier coupe that has about 130K miles on it. It is currently doing two things: When the car is idling the engine begins to overheat, and the air conditioning goes awol. As soon as forward movement begins again, the temperature goes back to acceptable levels, and the air conditioning becomes cool again. Since these problems occur simultaneously, it leads me to think they might be related.
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Just recently my Prius Taxi with 340,000+Km has developed a little problem,it starts fine but after 20-30 seconds it begins to feel like it's not running properly on all four cylinders,if i go to the exhaust pipe it seems like it's spluttering slightly.
Yesterday I changed the plugs,checked air filter and all connections,everything fine, when I accelerate it feels hesitant but after the car gets up to temp it seems to go away,it only happens when i start it first thing or if it's been left for a few hours, it's never had the throttle body cleaned and I'm wondering if what I'm describing is a symptom of this?
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My 2000 Toyota MR2 started to act up a bit lately.
I noticed that the car cranks fine, but turns over very weak. almost seems like it barely starts. This happens ONLY when the car is already warmed up. This does not happen when car is starting from cold start. Like, starting first time in the morning is fine, but after 10 minutes of driving, then turned off, the subsequent starts are weak as a fart from a butterfly. But it does start, and when it does... it seems to drive okay.
Now, I've been hearing it can be leaky fuel injectors, or... Mass Air Flow sensor, .. or .... bad fuel pressure..(which may be part of leaky injectors?)
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I have a 1987 ford 350 when i go up a steep hill the truck starts to skip and break down to a point where I have to pull over i just put in new fuel pump in tank, what could be the problem only happens on hills.
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A few days ago, I went to start the car, and it will start, and idle fine for a few seconds, and then begin to run crappy, idle down, and die. I tried starting it, and giving it some accelerator pedal, and it dies. I changed the timing belt, idler pulley, and tensioner this summer, so I'm ruling out a bad timing belt. There is no check engine light, and I replaced the plug wires because when I removed the cover, I noticed one of them was worn in a spot, and the wire shielding inside the rubber insulation was visible.
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I just replaced the water pump and put it all back together, now it won't run well enough to drive. Checked vacuum system, all sensor connections, hoses, gas cap, changed fuel filter, I can hear the fuel pump kick in, reset system with battery disconnected and have looked at everything I can think of so far.
Now - starts fine, idles about 10 seconds and then begins to idle rough and dies. If I use the throttle I can often keep the idle up, but then backfires or acts like no fuel and again dies. Used fuel cleaner and made sure there was plenty fuel in tank.
I am looking at replacing sensors at this point but which one first?? They get a bit expensive real quick.
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I Have a 93 bronco with a5.8 the truck will start up and run fine for a while and then the engine gets really ruff starts back firing and shuts off it only starts with starting fluid or after it sits for about 30 mins.
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I have a 2004 Oldsmobile Alero 4 cylinder with 127K miles. After driving for a period of 30 to 45 minutes, it will cut off and it takes 30 minutes to an hour before it will restart. I have had the fuel pump, crankshaft position sensor, ignition control module, coil pack and computer replaced and I am still having the same problem. What might be causing this?
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I have a 2004 Ford F150 and the battery keeps dying. We do not use the truck a lot and it sometimes sits outside for 2-4 weeks without being used. If it sits that long, it might be completely dead, but starts up easily with a jump and then works fine for a while. The battery is a 650 amp Motocraft w prorated replacement from 37-100 mo. The local Ford dealer has checked it several times in the past 2 yr and said it is fine, and that if the truck sits for a couple of weeks the battery will die. Is that right? I am not a car moron, nor am I an expert, but I am concerned that they are missing a small draw somewhere in the system. Should I be concerned about a draw or is this just something that happens to batteries as they get older?
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I have a 04 late model F250. I have done the EGR delete, oil cooler upgrade, and blue spring upgrade. I have a SCT tuner but truck is currently set to stock.
My issue is it starts fine runs good but dies after about 2 minutes. No stutter or stumble. It acts as if some one just turns the key off. I have to let it sit for about 2 minutes and then it will restart. If I try any sooner then it just cranks but will not fire. This started about three weeks ago. At that time I would be driving and it would just die. I could slip into neutral turn key and it would fire right back up and I could continue down the road. As time has gone by the issue has reoccurred more often and now I have to let it sit for about 2 minutes to get it to start again but then as stated only runs for about 2 minutes and then dies again.
I have a scangauge and here are the readings I can get.
FICM main power is 47.5 - 48 volts at all times = good
FICM Logic power is 10.5 - 11.5 volts at all times = ???
IPR is 33% at idle = good Scangauge does not react fast enough to get info at startup.
ICP voltage KOEO 0.25 volts
Start 1.33 volts
Idle 1.11 - 1.13 volts dips briefly to 0.96 volts
ICP pressure Start 900+
Idle 830ish
Sync between CAMshaft and Crankshaft is 1 = good
Have not gotten fitting to do fuel pressure test yet.
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2007 5.4 . Starts good , idles all day. As soon as you try to rev it, it stumbles rattles etc. Shut it off, wait a second, restart then Idles fine. I watched live Data and it carries on when the VVT solenoids become active (above 800 rpm).There duty cycle goes to 60-70 percent while revving. I think it Is just one side of the engine. Could be VVT solenoids sticking on? yes ? No?
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2001 F450/6.8 gasser. Auto trans. This strange thing just appeared from nowhere. Start the truck, put it gear. As soon as the truck starts to roll, the chime begins to sound. If I continue on, it'll beep 80 or 90 times before stopping. As soon as brakes are applied and the wheels stop turning, chime disappears. Happens in forward or reverse. No lights appear in the cluster. A check with an Actron scanner shows no codes or MIL. Seat belts are buckled.
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I bought my 2004 RX 330 last year with 110k miles. It starts up every time with no problem, except that It takes a few more seconds to turn over the engine till it starts. I have to keep the key turned longer that my other cars where all I need to do is just turn to start for a second only. I just replaced the battery and that did not change anything.
Is this normal for my RX 330, could I need new spark plugs? It's never been a problem in winter or summer.
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I just returned after leaving LS 460 in garage for 5 months. Car & a/c start up fine but after 5 minutes of driving the a/c shuts down & can not be re-started until I shut off the engine. I re-start the car and again after about 5 minutes, the a/c shuts down. All a/c panel lights are off except "outside temperature". In the dashboard console where the outside temperature is normally displayed there is an "E" displayed instead. The coolant fluid level is fine.
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