Bad ECM?
in [Toyota Trucks]
|
From: Ray O on 12 Sep 2006 03:43 "Dante" <dante(a)xmission.com> wrote in message news:ee4743$l69$1(a)news.xmission.com... > So I finally got it to recognize a drive cycle.... (Thanks Ray for the > suggestion of downloading the drive cycle from Techinfo.toyota.com) The > check engine light came on. The code is P0130. Malfunction with heated > o2 circuit bank 1 sensor 1. > > I ran a couple of tests on both o2 sensors and both of the heater elements > measure about 12 - 16 ohms. The Hayes manual says that they should only > be about 5-8 ohms or so. > > My question is what should I do from this point? Should I just replace > both sensors? Could it be something other than the sensors? > > By the way... the previous owner must have bottomed out while going > offroad or something because the downstream sensor is slightly bent and a > little of the wire is showing through the insulation. > > Thanks in advance, > Dante > If both O2 sensor heaters check out bad, then the sensors need replacement. -- Ray O (correct punctuation to reply)
From: Dante on 12 Sep 2006 10:28 Ray O wrote: > "Dante" <dante(a)xmission.com> wrote in message > news:ee4743$l69$1(a)news.xmission.com... >> So I finally got it to recognize a drive cycle.... (Thanks Ray for the >> suggestion of downloading the drive cycle from Techinfo.toyota.com) The >> check engine light came on. The code is P0130. Malfunction with heated >> o2 circuit bank 1 sensor 1. >> >> I ran a couple of tests on both o2 sensors and both of the heater elements >> measure about 12 - 16 ohms. The Hayes manual says that they should only >> be about 5-8 ohms or so. >> >> My question is what should I do from this point? Should I just replace >> both sensors? Could it be something other than the sensors? >> >> By the way... the previous owner must have bottomed out while going >> offroad or something because the downstream sensor is slightly bent and a >> little of the wire is showing through the insulation. >> >> Thanks in advance, >> Dante >> > > If both O2 sensor heaters check out bad, then the sensors need replacement. That's what I was thinking too... I just hate to spend that much money to find out that it's not really a problem. So I will replace both sensors... Anything else I should be looking for?
From: Ray O on 13 Sep 2006 00:18 "Dante" <dante(a)xmission.com> wrote in message news:ee6g9p$5s6$1(a)news.xmission.com... > Ray O wrote: >> "Dante" <dante(a)xmission.com> wrote in message >> news:ee4743$l69$1(a)news.xmission.com... >>> So I finally got it to recognize a drive cycle.... (Thanks Ray for the >>> suggestion of downloading the drive cycle from Techinfo.toyota.com) The >>> check engine light came on. The code is P0130. Malfunction with heated >>> o2 circuit bank 1 sensor 1. >>> >>> I ran a couple of tests on both o2 sensors and both of the heater >>> elements measure about 12 - 16 ohms. The Hayes manual says that they >>> should only be about 5-8 ohms or so. >>> >>> My question is what should I do from this point? Should I just replace >>> both sensors? Could it be something other than the sensors? >>> >>> By the way... the previous owner must have bottomed out while going >>> offroad or something because the downstream sensor is slightly bent and >>> a little of the wire is showing through the insulation. >>> >>> Thanks in advance, >>> Dante >>> >> >> If both O2 sensor heaters check out bad, then the sensors need >> replacement. > > That's what I was thinking too... I just hate to spend that much money to > find out that it's not really a problem. So I will replace both > sensors... Anything else I should be looking for? I forgot to add that I gave that advice assuming that you checked the O2 sensors at the sensor pigtail and not at the ECM. If you checked at the ECM, then check for high resistance in the circuit between the ECM and where the O2 sensors plug in. I recommend OEM sensors, but if you decide to go aftermarket, then save the pigtail off of the old sensor and splice it to the aftermarket sensor, if a splice is needed. I recommend soldering the splice and then use shrink tubing to insulate the splice. -- Ray O (correct punctuation to reply)
From: Dante on 13 Sep 2006 10:32 Ray O wrote: > "Dante" <dante(a)xmission.com> wrote in message > news:ee6g9p$5s6$1(a)news.xmission.com... >> Ray O wrote: >>> "Dante" <dante(a)xmission.com> wrote in message >>> news:ee4743$l69$1(a)news.xmission.com... >>>> So I finally got it to recognize a drive cycle.... (Thanks Ray for the >>>> suggestion of downloading the drive cycle from Techinfo.toyota.com) The >>>> check engine light came on. The code is P0130. Malfunction with heated >>>> o2 circuit bank 1 sensor 1. >>>> >>>> I ran a couple of tests on both o2 sensors and both of the heater >>>> elements measure about 12 - 16 ohms. The Hayes manual says that they >>>> should only be about 5-8 ohms or so. >>>> >>>> My question is what should I do from this point? Should I just replace >>>> both sensors? Could it be something other than the sensors? >>>> >>>> By the way... the previous owner must have bottomed out while going >>>> offroad or something because the downstream sensor is slightly bent and >>>> a little of the wire is showing through the insulation. >>>> >>>> Thanks in advance, >>>> Dante >>>> >>> If both O2 sensor heaters check out bad, then the sensors need >>> replacement. >> That's what I was thinking too... I just hate to spend that much money to >> find out that it's not really a problem. So I will replace both >> sensors... Anything else I should be looking for? > > I forgot to add that I gave that advice assuming that you checked the O2 > sensors at the sensor pigtail and not at the ECM. If you checked at the > ECM, then check for high resistance in the circuit between the ECM and where > the O2 sensors plug in. > > I recommend OEM sensors, but if you decide to go aftermarket, then save the > pigtail off of the old sensor and splice it to the aftermarket sensor, if a > splice is needed. I recommend soldering the splice and then use shrink > tubing to insulate the splice. Thanks for the heads up. I did check it at the pigtail. So I've heard that Bosch is not the best brand to use with Toyotas... Is there any truth to that? What brand do you guys recommend? Also, with the shrink tubing, is a blow drier hot enough or do you need a heat gun... Or would something else work?
From: Ray O on 13 Sep 2006 17:11
"Dante" <dante(a)xmission.com> wrote in message news:ee94q0$u65$1(a)news.xmission.com... > Ray O wrote: >> "Dante" <dante(a)xmission.com> wrote in message >> news:ee6g9p$5s6$1(a)news.xmission.com... >>> Ray O wrote: >>>> "Dante" <dante(a)xmission.com> wrote in message >>>> news:ee4743$l69$1(a)news.xmission.com... >>>>> So I finally got it to recognize a drive cycle.... (Thanks Ray for the >>>>> suggestion of downloading the drive cycle from Techinfo.toyota.com) >>>>> The check engine light came on. The code is P0130. Malfunction with >>>>> heated o2 circuit bank 1 sensor 1. >>>>> >>>>> I ran a couple of tests on both o2 sensors and both of the heater >>>>> elements measure about 12 - 16 ohms. The Hayes manual says that they >>>>> should only be about 5-8 ohms or so. >>>>> >>>>> My question is what should I do from this point? Should I just >>>>> replace both sensors? Could it be something other than the sensors? >>>>> >>>>> By the way... the previous owner must have bottomed out while going >>>>> offroad or something because the downstream sensor is slightly bent >>>>> and a little of the wire is showing through the insulation. >>>>> >>>>> Thanks in advance, >>>>> Dante >>>>> >>>> If both O2 sensor heaters check out bad, then the sensors need >>>> replacement. >>> That's what I was thinking too... I just hate to spend that much money >>> to find out that it's not really a problem. So I will replace both >>> sensors... Anything else I should be looking for? >> >> I forgot to add that I gave that advice assuming that you checked the O2 >> sensors at the sensor pigtail and not at the ECM. If you checked at the >> ECM, then check for high resistance in the circuit between the ECM and >> where the O2 sensors plug in. >> >> I recommend OEM sensors, but if you decide to go aftermarket, then save >> the pigtail off of the old sensor and splice it to the aftermarket >> sensor, if a splice is needed. I recommend soldering the splice and then >> use shrink tubing to insulate the splice. > > Thanks for the heads up. I did check it at the pigtail. So I've heard > that Bosch is not the best brand to use with Toyotas... Is there any truth > to that? What brand do you guys recommend? Also, with the shrink tubing, > is a blow drier hot enough or do you need a heat gun... Or would > something else work? The only experience I have with O2 sensors is OEM so I cannot say whether other ones are good or not. I suspect that the life of aftermarket sensors is not as long as OEM sensors, for example, the O2 sensors on our '97 Avalon with 110,000 miles are original. If they failed tomorrow, I know the OEM ones will probably last at least that long so I would go with OEM. On the other hand, if I were going to sell the car next year, I'd go with the cheapest solution. As far as heat shrink tubing, a hair drier will probably take a long time to shrink the tubing. If you do not have a heat gun, use a lighter or a candle for heat, just hold the flame far enough away to prevent burning the insulation, like 3 or 4 inches, and keep the flame going back and forth. -- Ray O (correct punctuation to reply) |