XG300 goes into limp mode for no apparent reason
I have had my 2001 XG300 do this twice now some 10 months & 15,000 km apart.
For no apparent reason the car will suddenly show a 'check engine' light & at the same time go into 'limp mode'. The car has only 115,000 Km (about 70,000 mi), has been serviced regularly & was/is running absolutely perfectly. On both occasions, I was driving highway speeds in a remote part of Wa state doing the speed limit & slightly accelerating. On the first event I was over an hour from anywhere with a code reader, so tried a momentary disconnect of the battery. The problem was immediately fixed. It ran perfectly for all these 10 months- I even carried my code reader with me for about 9 months in case it should happen again, but recently in getting the car ready for winter brought it in the house. So once again I had to disconnect the battery roadside (not fun at 6:300 AM on a cold desolate road). On both occasions there were no codes showing when I got home some 4 hours of driving later. Until last week, I dismissed the first as a fluke, but here it's happened again & I have no idea what to look for. By the way last spring I changed the plugs & checked virtually all electrical connectors that I could find under the hood. Everything looked good. The car starts quickly, runs smoothly, has all kinds of power & seems almost perfect. The almost is b/c at times the remote control for locking doesn't flash the lights even though it locks & once in a long while the alarm will sound even when opening a door locked & then unlocked with the remote. I mention this b/c when the car acted up last week, it also tripped the alarm after I had reset the computer, drove it for an hour,then stopped and opened the door -causing the alarm to sound. Any ideas folks?? Thanks, BCinBC |
Re: XG300 goes into limp mode for no apparent reason
It's pretty much guaranteed your remote issue is unrelated to the limp-home
issue. It's also going to be impossible to determine the nature of the problem causing activation of limp-home without a trouble code. Considering the problem has only happened twice in ten months now, the chances of finding it without retrieving a code (and taking a guess based off that code) are near zero. When you use the term "limp-home," do you mean that the transmission shifts to and stays in third gear, or that engine power is reduced to near zero. -- Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai/ More information at http://www.talkaboutautos.com/faq.html |
Re: XG300 goes into limp mode for no apparent reason
Thanks for responding hyundaitech,
I don't know what gear it drops to, but last week it cut out as the service light came on just as I was ascending a mid grade hill. I had maybe 500' to go to get past the guard rail & onto a wider shoulder. The engine was running very rough & it was a chore to make it at about 5 to 10 mph. When I put it neutral , I thought it would stall & trying to rev it didn't really make much of a change -speeded up a bit but just as rough. As I said a quick battery disconnect for 30 seconds & then it fired right up & has run perfectly again for a good 800 km. of mostly mountain driving. I guess I'm just going to have to be sure to carry my code reader. The other odd thing is that the door locks are now working correctly -every time I lock the lights flash twice. For the previous month frequently the doors would lock from the remote but no flash & sometimes I'd hear a click but they didn't lock. Weird, I realize & yes most likely a red herring but then again the whole event is bizarre. BCinBC "hyundaitech" <notpublic@not.public.com> wrote in message news:e663e158b0369cf927bf6271f7d94418@localhost.ta lkaboutautos.com... > It's pretty much guaranteed your remote issue is unrelated to the > limp-home > issue. > > It's also going to be impossible to determine the nature of the problem > causing activation of limp-home without a trouble code. Considering the > problem has only happened twice in ten months now, the chances of finding > it without retrieving a code (and taking a guess based off that code) are > near zero. > > When you use the term "limp-home," do you mean that the transmission > shifts to and stays in third gear, or that engine power is reduced to near > zero. > > -- > Message posted using > http://www.talkaboutautos.com/group/alt.autos.hyundai/ > More information at http://www.talkaboutautos.com/faq.html > |
Re: XG300 goes into limp mode for no apparent reason
Since the engine performance is limited, it's definitely and engine control
related issue. Typically, it's either with the accelerator position sensor, or some issue with the throttle body or one of its components. Next time, try turning the car off and restarting. It may not be necessary to disconnect the battery, but rather just start a new key cycle. -- Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai/ More information at http://www.talkaboutautos.com/faq.html |
Re: XG300 goes into limp mode for no apparent reason
Thanks again Hyundaitech,
> Yes I tried just restarting on both the first & now second event & no it > did not make > a difference. I have replaced the mass air flow sensor (an issue with this > model) & reset the throttle sensor over a year ago. Also when I changed > the > plugs after the first weird event I checked all connectors under the hood > & > all looked good to me. > The last silly consideration is that it may be related to the security > system. I say this b/c both times this has happened was just outside of > Spokane Wa. Now to come back to BC, Canada where we live, from the > airport, > you have to go through a bit of a seedy part of town. On both occasions, > it > was about 3/4 hours after leaving Spokane & each time I had locked the > doors > from the inside. These are the only times since I owned this car new that > I > have done so. Coincidence?? Don't know. > BCinBC "hyundaitech" <notpublic@not.public.com> wrote in message news:57c151b60b7cd4ec76512ad81caf8b0f@localhost.ta lkaboutautos.com... > Since the engine performance is limited, it's definitely and engine > control > related issue. Typically, it's either with the accelerator position > sensor, or some issue with the throttle body or one of its components. > > Next time, try turning the car off and restarting. It may not be > necessary to disconnect the battery, but rather just start a new key > cycle. > > -- > Message posted using > http://www.talkaboutautos.com/group/alt.autos.hyundai/ > More information at http://www.talkaboutautos.com/faq.html > |
Re: XG300 goes into limp mode for no apparent reason
I had a similar problem a few years ago with an XG300. They replaced the
throttle body and it worked for a while, but went out again and the problem turned out to be a wiring issue and not the throttle body. Hyundai reimbursed me for the throttle body cost and once the frayed wires were repaired it ran ok. Might want to check the wiring before major repairs. "B Crawford" <bcdcinbc@telus.net> wrote in message news:L%PVi.42565$GO5.20520@edtnps90... > Thanks again Hyundaitech, >> Yes I tried just restarting on both the first & now second event & no it >> did not make >> a difference. I have replaced the mass air flow sensor (an issue with >> this >> model) & reset the throttle sensor over a year ago. Also when I changed >> the >> plugs after the first weird event I checked all connectors under the hood >> & >> all looked good to me. >> The last silly consideration is that it may be related to the security >> system. I say this b/c both times this has happened was just outside of >> Spokane Wa. Now to come back to BC, Canada where we live, from the >> airport, >> you have to go through a bit of a seedy part of town. On both occasions, >> it >> was about 3/4 hours after leaving Spokane & each time I had locked the >> doors >> from the inside. These are the only times since I owned this car new that >> I >> have done so. Coincidence?? Don't know. >> BCinBC > "hyundaitech" <notpublic@not.public.com> wrote in message > news:57c151b60b7cd4ec76512ad81caf8b0f@localhost.ta lkaboutautos.com... >> Since the engine performance is limited, it's definitely and engine >> control >> related issue. Typically, it's either with the accelerator position >> sensor, or some issue with the throttle body or one of its components. >> >> Next time, try turning the car off and restarting. It may not be >> necessary to disconnect the battery, but rather just start a new key >> cycle. >> >> -- >> Message posted using >> http://www.talkaboutautos.com/group/alt.autos.hyundai/ >> More information at http://www.talkaboutautos.com/faq.html >> > > |
Re: XG300 goes into limp mode for no apparent reason
Thanks Dwight,
The wiring on these cars is extremely involved. Do you have any idea as to where the wiring problem was located? Thanks, BCinBC "Dwight Jones" <4dwight@comcast.net> wrote in message news:4MidnTFHAKfReLranZ2dnUVZ_gadnZ2d@comcast.com. .. >I had a similar problem a few years ago with an XG300. They replaced the >throttle body and it worked for a while, but went out again and the problem >turned out to be a wiring issue and not the throttle body. Hyundai >reimbursed me for the throttle body cost and once the frayed wires were >repaired it ran ok. > > Might want to check the wiring before major repairs. > > > "B Crawford" <bcdcinbc@telus.net> wrote in message > news:L%PVi.42565$GO5.20520@edtnps90... >> Thanks again Hyundaitech, >>> Yes I tried just restarting on both the first & now second event & no it >>> did not make >>> a difference. I have replaced the mass air flow sensor (an issue with >>> this >>> model) & reset the throttle sensor over a year ago. Also when I changed >>> the >>> plugs after the first weird event I checked all connectors under the >>> hood & >>> all looked good to me. >>> The last silly consideration is that it may be related to the security >>> system. I say this b/c both times this has happened was just outside of >>> Spokane Wa. Now to come back to BC, Canada where we live, from the >>> airport, >>> you have to go through a bit of a seedy part of town. On both occasions, >>> it >>> was about 3/4 hours after leaving Spokane & each time I had locked the >>> doors >>> from the inside. These are the only times since I owned this car new >>> that I >>> have done so. Coincidence?? Don't know. >>> BCinBC >> "hyundaitech" <notpublic@not.public.com> wrote in message >> news:57c151b60b7cd4ec76512ad81caf8b0f@localhost.ta lkaboutautos.com... >>> Since the engine performance is limited, it's definitely and engine >>> control >>> related issue. Typically, it's either with the accelerator position >>> sensor, or some issue with the throttle body or one of its components. >>> >>> Next time, try turning the car off and restarting. It may not be >>> necessary to disconnect the battery, but rather just start a new key >>> cycle. >>> >>> -- >>> Message posted using >>> http://www.talkaboutautos.com/group/alt.autos.hyundai/ >>> More information at http://www.talkaboutautos.com/faq.html >>> >> >> > > |
Re: XG300 goes into limp mode for no apparent reason
don't recall, sorry
"B Crawford" <bcdcinbc@telus.net> wrote in message news:TxbWi.79453$%B2.72156@edtnps82... > Thanks Dwight, > The wiring on these cars is extremely involved. Do you have any idea as to > where the wiring problem was located? > Thanks, > BCinBC > "Dwight Jones" <4dwight@comcast.net> wrote in message > news:4MidnTFHAKfReLranZ2dnUVZ_gadnZ2d@comcast.com. .. >>I had a similar problem a few years ago with an XG300. They replaced the >>throttle body and it worked for a while, but went out again and the >>problem turned out to be a wiring issue and not the throttle body. Hyundai >>reimbursed me for the throttle body cost and once the frayed wires were >>repaired it ran ok. >> >> Might want to check the wiring before major repairs. >> >> >> "B Crawford" <bcdcinbc@telus.net> wrote in message >> news:L%PVi.42565$GO5.20520@edtnps90... >>> Thanks again Hyundaitech, >>>> Yes I tried just restarting on both the first & now second event & no >>>> it did not make >>>> a difference. I have replaced the mass air flow sensor (an issue with >>>> this >>>> model) & reset the throttle sensor over a year ago. Also when I changed >>>> the >>>> plugs after the first weird event I checked all connectors under the >>>> hood & >>>> all looked good to me. >>>> The last silly consideration is that it may be related to the security >>>> system. I say this b/c both times this has happened was just outside of >>>> Spokane Wa. Now to come back to BC, Canada where we live, from the >>>> airport, >>>> you have to go through a bit of a seedy part of town. On both >>>> occasions, it >>>> was about 3/4 hours after leaving Spokane & each time I had locked the >>>> doors >>>> from the inside. These are the only times since I owned this car new >>>> that I >>>> have done so. Coincidence?? Don't know. >>>> BCinBC >>> "hyundaitech" <notpublic@not.public.com> wrote in message >>> news:57c151b60b7cd4ec76512ad81caf8b0f@localhost.ta lkaboutautos.com... >>>> Since the engine performance is limited, it's definitely and engine >>>> control >>>> related issue. Typically, it's either with the accelerator position >>>> sensor, or some issue with the throttle body or one of its components. >>>> >>>> Next time, try turning the car off and restarting. It may not be >>>> necessary to disconnect the battery, but rather just start a new key >>>> cycle. >>>> >>>> -- >>>> Message posted using >>>> http://www.talkaboutautos.com/group/alt.autos.hyundai/ >>>> More information at http://www.talkaboutautos.com/faq.html >>>> >>> >>> >> >> > > |
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