how do I get a reader to work

batty1214 · 01-24-2009, 09:15 PM

I have a 1995 GMC k1500 sierra with a 5.0, that has a random miss..... I have replaced the plugs, wires, cap, rotor and pcv valve........ The only time that it is doing it is when I am idling...... then when under a load, like going up a hill it makes a grinding/pinging noise.. and doesn't have the power it once had... since it started my mileage dropped from 23 on hwy to 16........ any ideas??? I tried reading codes, but am not getting power to the port......

crabtruck · 01-25-2009, 02:40 AM

Quote:

Originally Posted by batty1214

I have a 1995 GMC k1500 sierra with a 5.0, that has a random miss..... I have replaced the plugs, wires, cap, rotor and pcv valve........ The only time that it is doing it is when I am idling...... then when under a load, like going up a hill it makes a grinding/pinging noise.. and doesn't have the power it once had... since it started my mileage dropped from 23 on hwy to 16........ any ideas???
I tried reading codes, but am not getting power to the port......

If that's an OBD-1 like I think it is, couldn't you pull codes by
jumping A and B on the ALDL, and counting the flashes ?
Course check your dash warn lamps work at key on first...

batty1214 · 01-25-2009, 04:36 AM

Im not sure what you mean by jumping a and b on the aldl....... and Im pretty sure it is a obd1...

leolkfrm · 01-25-2009, 06:03 AM

check the fuse for the lighter for the power problem. sounds like the O2 may be weak, you will need a scanner to read it. the pinging is spark knock, did you disturb the timing or knock the wire off that you disconnect for setting the timing?

silverhairdeere · 01-25-2009, 08:09 AM

try this run a jumper wire from a to b that will give you a code .

shd

batty1214 · 01-25-2009, 01:21 PM

The miss started before I changed everything...... and nothing this far has helped it..... I'll try jumping the code.......one of my friends was wondering if It might be my cam or valves.... Is this a possibility?

batty1214 · 01-25-2009, 01:25 PM

that really isnt that hard to get codes then..... huh. have to try that tonight

bradrhale · 01-25-2009, 03:19 PM

Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical

here is a site that will define the codes for you also.

batty1214 · 01-25-2009, 04:28 PM

okay, if the computer has codes on it, should the service engine soon light already be on?

leolkfrm · 01-25-2009, 06:09 PM

No they would be stored, Did you get your reader to work?

01-24-2009, 09:15 PM	#1
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,276	how do I get a reader to work I have a 1995 GMC k1500 sierra with a 5.0, that has a random miss..... I have replaced the plugs, wires, cap, rotor and pcv valve........ The only time that it is doing it is when I am idling...... then when under a load, like going up a hill it makes a grinding/pinging noise.. and doesn't have the power it once had... since it started my mileage dropped from 23 on hwy to 16........ any ideas??? I tried reading codes, but am not getting power to the port......

01-25-2009, 06:03 AM	#4
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,844	check the fuse for the lighter for the power problem. sounds like the O2 may be weak, you will need a scanner to read it. the pinging is spark knock, did you disturb the timing or knock the wire off that you disconnect for setting the timing? __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I Last edited by leolkfrm; 01-25-2009 at 01:32 PM.

01-25-2009, 06:09 PM	#10
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,844	No they would be stored, Did you get your reader to work? __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

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01-25-2009, 04:36 AM	#3
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,276	Im not sure what you mean by jumping a and b on the aldl....... and Im pretty sure it is a obd1...

01-25-2009, 01:21 PM	#6
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,276	The miss started before I changed everything...... and nothing this far has helped it..... I'll try jumping the code.......one of my friends was wondering if It might be my cam or valves.... Is this a possibility?

01-25-2009, 01:25 PM	#7
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,276	that really isnt that hard to get codes then..... huh. have to try that tonight

01-25-2009, 03:19 PM	#8
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 9,469	Troublcodes.net Trouble Codes OBD & OBD2 Trouble Codes and Technical info & Tool Store. By BAT Auto Technical here is a site that will define the codes for you also.

01-25-2009, 04:28 PM	#9
batty1214 Senior Member Join Date: Nov 2008 Location: Vernal Utah Posts: 1,276	okay, if the computer has codes on it, should the service engine soon light already be on?