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    Torque app users?

    I have the Torque Pro app but some of PIDs don't work like cylinder misfire counts mainly. I have a 1997 chevy tahoe. If you have the Torque app can you tell me if the cylinder misfire counts work for you? thanks
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    Verify I have the correct MAP sensor in my 97 Tahoe

    I have in my truck now part # 16187556 and there is a 4 digit # below that I have 7070. I have 2 spare MAP sensors from the junk yard all with the same #16187556 but the 4 digit numbers for those are 7252 and 6304 Can someone here take at look at their truck and tell me what numbers are on...
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    Oil cooler lines question

    I changed my oil cooler lines the other day and they fit loosely at the oil adapter. I can pull them in and out about an 1/8" roughly and spin the lines. I pushed them in until i heard click from the retaining clip and slip the plastic caps over and they clicked too. Weird the lines feel...
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    What type of gear oil in the rear diff? So confusing

    I have a G80 rpo code on my 1997 tahoe and i read that it's a locking differential and you don't use gear oil with limited slip additive. Then I look up the rpo code and it says a G80 is a limited slip differential ??:wtf: I just bought Valvoline 80w90 that has a little label on the front...
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    How much weight can I put in my Tahoe?

    1997 4 door 4x4 LS all stock. I have to pickup some solid cinder blocks from home depot 45 of them. They weigh 35 pounds each so about 1,600 pounds total. I'm going to lay the seats flat and put a sheet of plywood down and spread the load out evenly. Will that be too much weight or...
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    Truck shudders bad going uphill ?

    I took a 2 hour drive yesterday and I experienced heavy shuddering above 60-65 mph going uphill. It got so bad at times it shook the dashboard. If I let off the gas and give it harder throttle it would stop. Also going uphill I seem to have no power at all. I have to really mash on the gas...
  7. N

    replacing all the hard brake lines tomorrow have questions

    The main line that broke was the one going to the rear and it comes out of the ABS pump. Since I have to remove it I assume the ABS pump has to be bleed? I read a scan tool is required to bleed the ABS pump and I don't want to go through all that unless i have to. Also you aren't supposed...
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    One of my brake lines blew out. What size?

    So I got my fuel pump in finally and when I was done the brake light was on. I checked the master cylinder and the front section was bone dry. It's the line on the frame rail between the fuel tank that broke. Is that a 1/4" line? These trucks only use 1/4 and 3 /16 lines correct?
  9. N

    Started the hellish job of changing my fuel pump (pics)

    What a hell of a job! This is going to be a 3 day job for me. I got the tank out today but didn't get the fuel pump out of the tank. The lock ring is so badly rusted I might have to break it out. The quick connect fuel lines just snapped the plastic on the fuel pump so that was easy but...
  10. N

    Fuel pump crapped out today

    I went out and it wouldn't start kept cranking and cranking. Pressed on the fuel line shrader valve and just a dribble of fuel came out. Tried starting it a few times and nothing. So I grabbed my 3 lb mallet and crawled under the gas tank and tapped it then it started up. It starts up...
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    Good news and bad news for my truck

    Still trying to track down my issues causing my higher fuel trim #s, missing at idle etc.. I have no codes. I decided to check to see if I have exhaust leaks and I found 2 at the Y pipe connections to the exhaust manifolds. Did the old trick with the shop vac blowing air into the exhaust...
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    Going to change the fuel pump soon

    Is their any way to eliminate the quick connect fittings on the fuel pump? It made things quicker to assemble at the factory but I don't trust those quick connects. Could I use regular fuel line and some band clamps or would the pressure be too high and blow the hose right off? If I can't...
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    Is the IAC valve supposed to do this?

    Working on the truck today and the IAC valve was going nuts. I had the key on not running and it was clicking on and off like crazy. http://youtu.be/pUefnDMZp6E
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    Throttle plate stop screw adjustment

    What happens if I messed with that screw on the throttle body that is for the throttle plate? Will it cause the engine to run rough or idle rough? I was an idiot and messed with it thinking that would lower my idle last summer.
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    So tired of stuff breaking on me

    I went to change my fuel filter the other day to see if it will cure any of the issues I'm having and the next day it wouldn't start:help: It kept cranking and cranking and no hint of it getting fuel just the motor turning. Pressed on the shrader valve and only a drop of fuel came out. So...
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    Proper intake manifold pressure?

    I read 4.35 PSI on the torque app. Converted to inHg that is 8.8 A healthy engine should be between 17-22 Hg correct? So do i have a vacuum leak here causing all my issues? Like I said my LTFT are 10.8 and 10.2 at idle then rise to 15.2 and 13.3 when I drive about 40-50 mph So the vacuum...
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    My fuel trim readings

    Used the new torque app and I get Long Term B1 10.9 (idle) 15.6 driving about 40-50mph Long Term B2 10.2 (idle) 13.3 driving about 40-50mph My rpms at idle RPM fluctuate 606-646 all different numbers. I don't have any check engine lights but I still have the pinging noise (i...
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    I finally got the Torque Pro app but...

    I have no idea what the specs are for our trucks for different sensors and vacuum. Here's some readings of what I got but I don't know what the specs are Intake manifold pressure (at idle) 4.35 PSI Timing Advance (at idle) 22-24 degrees Mass air flow rate 47.33 CFM Turbo boost+vacuum...
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    AC Delco Advantage brand and Raybestos service grade

    I know Moog is heavily recommended everywhere but are these other 2 brands any good? Trying to save some money on front end steering linkage parts. I would think they should last just as long as long as you keep up with greasing the fittings right? Which would you buy the AC Delco...
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    Gotta replace my steering linkage it's bad now

    Can I do this job without air tools? Also I have a tie rod end puller the opening height is 2" and the opening width is 1 1/2- 1 3/8". Will this puller work for everything? tie rod ends, pitman arm and idler arm?
  21. N

    Replacing all the steel brake lines questions

    I have to replace my steel brake lines because under the brake booster they are badly rusted. Looks like the previous owner added some inline couplings to do patch repairs. I want to do them all right with no couplings. First question what size are they? 3/16 is what I've read and one is...
  22. N

    Vacuum lines on 1997

    I have been experiencing high idle on startup and it stays at around 1300 rpm for awhile for over a couple minutes. Giving it throttle and revving the engine up past 2500 rpm does nothing. When the idle finally comes down it's around 900 at idle and gets a tad lower under load like 800...
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    Weird knocking noise under accelleration

    Ever since I adjusted the valves last weekend with the engine running I now hear this slight sorta like a knocking noise under acceleration. It sounds sorta like marbles rolling around. I idle it and listen and I cant hear it, it only happens under load. And it only happens for a second...
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    What load rating tires do I need for towing?

    I will be towing an enclosed trailer of no more then 3,500 lbs. Will stock p metric tires work or should I get C rated LT tires? I'm pretty sure E rated tires are way overkill. I'm on a tight budget for tires that's why I'm asking.
  25. N

    Adjusted the valves/rockers part 2

    As you can remember my infamous "loose rockers thread" I finally found time today to do proper adjustments. I only did this because I noticed a lot of ticking in extremely cold weather. I did the adjustments with the engine running. I drove the truck first and got it to operating temp. I...

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