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General Site Info => General Discussion => Topic started by: Irish_Alley on December 17, 2015, 10:49:49 pm

Title: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 17, 2015, 10:49:49 pm
well i got the wife a new 4x4. only paid 1200 for it, it has its flaws but i think/hope she will like it lol. anyway i havnt really looked at it much but it has a weird issue, when parked there is no power steering while turning the wheel right but it works good when turning left. the guy said he clipped a snow bank and it grabbed the right wheel, he didnt do no body damage and the tires tread wear wasnt too bad from an alignment. but anyone have an idea about what the problem could be or where to look. he said one shop told him the gear box but i dont want to be throwing parts at it but it does seam the only logical option, maybe the idler arm bracket?
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 18, 2015, 01:15:52 am
In my experience with gear boxes at work (and we've done a number of early 2000's gear boxes, just had 1 last week actually, an 03) if it turns easy 1 direction and not easy or difficult to the other direction, it's almost always a gear box.

What do you mean by "when parked"? Just in park, engine idling? In park, ignition and engine off?

If by this you mean in park, engine idling and this condition happens, mostly a gear box.

If you mean in park, engine and ignition off and this condition happens, well then it's probably a gear box here too, with the engine off, steering should be stiff both directions, if one is easy to turn something inside the gear box most be wrong.

If you increase the rpms and it gets easier in the direction of stiff steering, 1- The increase in fluid pressure is making a little easier to turn or 2- The fluid pressure at idle is inadequate and the increased pressure from higher rpms is allowing proper operation.

Honestly Irish, there's really not much difference between that steering system and our trucks. The fundamentals of hydraulic power steering still apply. It's when you get into the brand new trucks with electric power steering is when things complicated.
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 18, 2015, 01:18:29 am
Good heavens I just realized that sounded way to professional. Like it had 30 years experience behind it haha. I scare myself sometimes.....
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 18, 2015, 07:00:03 am
lol, yeah no matter the rpms as long as the trucks not moving its hard to turn to the right. like i said before my "professional" side wants to say gear box but my cheap side wants something else lol
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 18, 2015, 02:33:39 pm
Makes sense, only reason it's easier when your moving is because your moving lol. Like manual steering, a bear when stopped, no as difficult when moving.
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 23, 2015, 09:29:42 am
i kind of told myself i wouldnt touch this truck (modifiy) and it would be just "hers" but after driving it i want to make more power lol. i mean what harm could long tube headers and a program due  ::). but i have to behave, i have to behave, i have to behave.
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 23, 2015, 09:52:04 am
Lol
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 23, 2015, 10:21:17 pm
curious but does anyone know the biggest tires that can go on this truck with no lift? i know its not going to help my lack of power problem but it just looks too plain i have to get some trim or something for it
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 24, 2015, 02:15:42 am
I thought this was supposed to be your wifes nice, reliable driver?
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 24, 2015, 04:00:30 pm
um yeah, well today i showed it to her. its close enough to christmas so i took it to her at her moms. all our trucks/cars you can hear from a good distance away. this thing you can hardly hear unless your by the dang thing lol. well i was able to sneak into the house and no one knew i showed up. i told them i was in the "stealth truck" they didnt catch on, so i took my wife and took her outside. i was thinking before theres a 65% chance shes not going to like it. well i was 100% right she didnt like it till i told her it was for her. it doesnt need a pillow in the seat i noticed that myself.
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 30, 2015, 09:11:29 am
wanted to update about the gear box even though i changed it a week ago i forgot to update and it did fix the problem. one problem that im having is a smell gas once in a while from the front of the truck and sometimes inside the cab. the cel light is on but last time i check it, it was for a PO131 and PO151, cleared that and a few days later it came back on havnt check it this time but i assume its the same thing. i unplugged the fuel pressure regulator and its not leaking any gas but if i turn the key on and let it sit for a few seconds before starting when cold it will start right up, if i try to immediately start it it seams theres no fuel and wont start till about 5 seconds into it.
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 30, 2015, 10:16:14 am
Sounds like you have a fuel pump bleeding down and having a hard time building pressure. Put your ear to the gas tank while someone does what you just said when cold, the pump should sound like a smooth hum/buzz. Also, there is a fuel pressure test port on the fuel rail on top of the engine, I think it's on the drivers side rail, you might have to take the engine cover off but I don't think so. Fuel pressure should be 55-60 psi. If it's not while doing what you said and just trying to start it at first turn of the key, it's time for a new pump. If it starts low and them builds to proper pressure when you let it sit for a few seconds like you said and starts good after then same thing, new pump time. At 2002, 13 years is a pretty good run, but I wouldn't be surprised if it has been changed at least once before.
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 30, 2015, 10:43:45 am
P0131 and P0151 are codes for the Heated Oxygen Sensors (HO2S). First you need to figure out which type of sensors the truck has, there are 2 types and varying diagnostics depending on the type.

Type 1 is an HO2S that has an "Isolated Ground", meaning the connector for the sensor has 4 wires, 1 is a ground, and the ground goes back up towards the engine, inside the harness with the rest of the wires.

Type 2 is an HO2S that is "Case Grounded", meaning the sensor internally grounds to the sensor body (case) and in turn grounds to the exhaust pipe which is bolted to the exhaust manifold which is bolted to the engine.

Now we don't see many case grounded trucks here but it could be different in your area on the other side of the country. The only way to know is to take a quick second and look underneath and see if the connectors have 3 or 4 wires.

3  wires - Case Grounded

4 wires - Isolated Ground

First you will need to find out which and then go from there.

By the way, nice job on fixing the steering gear. If I wanted to be rude I could say "neener neener, I told you" lol but I think an electronic high 5 or fist bump is good enough.   haha
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 30, 2015, 11:05:37 am
lol yeah. the guy i got it from said a shop was going to charge him 700 to fix the box. after a 200 box it took me maybe 3 hours to fix it and this was goofing off at the shop. if someone was to ask me to change theirs i would be happy to charge 100+parts i would rate it a level 2 out of 10 on difficulty. 

the fuel pump was replaced a year ago idk why. but i know it could still be bad, i really need to get it over to the shop to test the fuel pressure, it was one of the things i wanted to do first before i asked for help but never got around to it. ill try to test it tonight
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 30, 2015, 03:12:19 pm
Steering gears aren't to terrible to change, compared to other parts.

It if was replaced with one from an auto parts store then a year is about right for going out again. My dad kept buying oreilly fuel pumps for his 97 tahoe, went threw 3 in 3 years, 1 a year. He didnt want to spend the money on a Delco unit.

 I put a GM unit in my 03 Tahoe and it was bad out of the box, work got it replaced for labor only, parts warranty and 3 years later when we sold the tahoe it was still going strong over 203,000 miles.

I know you worked at an auto parts chain store so no offense but I've seen alot of those types of pumps and they have always been short lived. Can't beat factory for fuel pumps.
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: Irish_Alley on December 30, 2015, 04:27:48 pm
no doubt they do have some crappy stuff. the only reason i got wires from my impala from autozone is cause they started to carry AC
Title: Re: working on a 2002 ext cab chevy 1500 4x4
Post by: LTZ C20 on December 30, 2015, 05:55:53 pm
Yea if it's AC or I already know the quality or trust the name I'm good with that. You should make those tests and report back.