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    04 TB temperature needle drifts to the right when going up a hill

    Thanks guys, the STFT runs up and down between 0 to +- 5 when RPM is constant . Sometimes it goes +- 8 and the most I've seen it was -12 but really brief. LTFT never got there. Last code I had was P0442 small leak. I just got the clone Tech2 VXDIAG tool will put it together with a PC to test the...
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    04 TB temperature needle drifts to the right when going up a hill

    I am running in 3rd uphill. The cat is about 3 years old but with very little mileage since. I just tested the pressure at the upstream injector and it's 0. I don't know specifics for Trailblazer but I thought the trim should be plus or minus 5% or at the most plus or minus 10%. What else should...
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    04 TB temperature needle drifts to the right when going up a hill

    I just drove it right now at 88 degrees outside temp it started out at fully warmed up on the streets 198 to 201 the 201 was at a light then I got on the freeway and went down to 195 and ranged between that and 198. As soon as I hit a small hill of lets say 1/4 mile length maybe less it went to...
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    04 TB temperature needle drifts to the right when going up a hill

    I think I was referring to relay 45 and the white wire contact at the relay which is the middle of the 3 prongs at #4. #5 is from PCM and #2 is from the fuse. When I check with test light I get + on 2 and 5 but negative on 4. So my question is for the fan to engage doesn't the relay have to have...
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    04 TB temperature needle drifts to the right when going up a hill

    It went to only 800 or so Fan Speed which is low I did have the Autel opened at the fan readings. So jumping 2 and 4 did not provide the full blast airplane noise. Maybe the harness is not making full contact or the fan is bad. I didn't check resistance as TJBaker57 mentioned between the black...
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    04 TB temperature needle drifts to the right when going up a hill

    I already added the tranny aux radiator and flushed the tranny with all new fluid even replaced the pan with one that has a drain bolt. Everything else has also been replaced. AC Delco 190 thermostat, AC Delco water pump, radiator is 2 years old. Fan Clutch is also new off the market. New CTS...
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    04 TB temperature needle drifts to the right when going up a hill

    I just changed the fan clutch again and took it on interstate 5 going toward Magic Mountai there are a few hills nothing major and it went up to 126 with or without the ac on. Turned to 90 degrees to engage heater and it just stayed at 123 but not lower. Last year with load in 115 when I turned...
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    04 TB temperature needle drifts to the right when going up a hill

    SO usually it was during the day 100 degrees outside. The water pump thermostat and temp sensor are all less than a year old also the fan clutch is the same, all ACDelco except the fan. Last year I pulled a boat to Laughlin and it went to 3/4 had to turn air off and heater on on those hills but...
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    04 TB temperature needle drifts to the right when going up a hill

    So I replaced the electric fan last year together with the thermostat and temp sensor right next to it. I did this after coming back from Laughlin pulling a boat and it caused it to worm up with the air on going uphill. Had to turn it on heater to go up those hills. Well now I want to go back...
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    SOLVED! 04 Trailblazer battery light issue

    I first found and repaired the red wire on the alternator connector, it provides the alt with power to start charging the battery, so that fixed the gauge and the charging and I also found and repaired the black wire and that fixed the battery not charging and red warning battery light. Pretty...
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    SOLVED! 04 Trailblazer battery light issue

    OK I figured it out
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    SOLVED! 04 Trailblazer battery light issue

    OK here's the diagram, so I don't remember which one I fixed but I think the field duty cycle grey wire not the red one. I also have not checked fuse 24 which is 10A. Very strange that the gauge shows 14 but the message center and the red light are on. The alternator was not on the car when the...
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    SOLVED! 04 Trailblazer battery light issue

    So I did some work on the cooling system, had to remove the alternator and because I didn't disconnect the battery negative I touched the wire that goes from the alt to the battery against some ground it sparked and when I put everything back the alt wasn't charging the battery and I had a...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    I am stuck trying to get the O2 sensor out, I've sprayed the PB remover spray i used a small torch for a little bit to try to get it unstuck but the issue is also the tool which is a 7/8 , I bought the long and the shorter versions and both seem to slip off the sensor as soon as i use a bar to...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    That's what I meant, sorry for the typo, I did order the O2 removal tool and it should be here any day now. I drove it around and it seems to have slightly more power but not much. Still lacks power and it keeps the RPm above 2k most of the time when picking up speed. I haven't seen any new...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    Changed both the T-stat and sensor, don't know what was more of a pain taking out the alternator lower bolt or screwing back the sensor. Had to go get a 18mm crowfoot at Sears to tighten it back. In the process I also broke the alterantor 2wire connector, so last night I brought it in and...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    So would you say that it's as good as a regular scanner like Actron CP-9580 which costs 5 times as much? How's the live data, does it monitor the different sensors,any graph capabilities, I know they read and erase codes but other than that don't know much about the Torque soft for Android, but...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    Quick question, what do you guys use as OBD2 scaners. I was looking at actron CP9580 and others like Innova 3130. I was also looking for the PC interface solutions like Autocom or the cheaper OBDLink SX solutions where you can add different upgrades. What do you guys use if anything to read live...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    I did take out four spark plugs today(after I cleaned out the throttle body) and they all looked the same redish brick look. No carbon deposits at all. Like I said the temp gage showed one incriment or line below 210, tomorrow I will change the T-stat and sensor. I will also do the O2 unplug as...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    I cleaned up the throttle body and it did have some deposits where the flap rests on the body, it took about 10 minutes of rubbing to clean it all, no major difference to added power maybe 5%. The temperature indicator stays one notch before the 210 mark so tomorrow comes the T-stat and sensor...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    The OTC looks more professinal but it's $132, this I picked up for $28 shipped, and even if I just use it this once it will pay for itself. I'm sure the muffler shop will charge much more to do the test.
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    Got it, thanks. Tried to find it at Pep Boys to no avail. It's good to have and am sure it's not too hard too use. What's a good oxygen sensor part number or equivalent that I could look for. I saw a few Bosch, Denso, Delphi
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    I'm definitely looking into buying the exhaust gauge which I assume is used through the oxygen sensor(front or rear don't know if trailblazer has 2 yet). I'm going to PepBoys and/or Autozone maybe you can give me a short guide on how to use it properly. What do you think of the Seafoam as a...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    This car has always waisted lots of gas, don't think I could do better than 16 miles per gallon, but don't think I tested it without the boat being attached, the cat issue makes sense I'll see about a muffler shop after i clean the throttle body. thanks for all the help.
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    I bought this car specifically to tow a little boat around, it had 13k miles, few years back, and ended up taking it to some long distance trips for awhile. But it mostly spent its time being parked. A year ago I started geting a code which also included the gas cap being faulty P0442 and that...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    Thanks for the reply, I've located most of the stuff you pointed out, like fuel filter, thermostat throttle body spark plugs, belt. Where is the temp sensor, do I need new gasket after removing & cleaning throttle body, and as for the check engine vacuum can you be more specific to if I'm...
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    04 Trailblazer low power feels like it's plugged up, scary trip back from tahoe-HELP

    2004 Trailblazer V6 2wd LT 57k miles rarely driven, first showed the same problem when pulling a small boat uphill and it only went 30 miles per hour but drove OK straight line. I was driving up to Lake Tahoe the other week and the car was loaded with family and luggage. Went up OK not great...

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