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post #1 of (permalink) Old 09-10-2006, 05:34 PM Thread Starter
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98 blazer rough idle

I have a 98 s10 blazer with 4.3 vortec after warm up it has rough idel.. i have checked the mass air flow for fuzz build up on it . not the problem it has to codes p0171 and a pending p1133 with are bank one codes for 02 sensors ive never seen a 02 sensor cause a ruff ide could this be?? my secound thought was low fuel presure at idle it is a 53 witch should be great and 60 with engine off so thats out.... and ideas?? its been 4 years since ive messes with engines so somebody give me some ideas.... i have checked the plugs wires cap and rotar all are good... you can pull a plug wire off while running on ever cylinder it stumbles harder so its firing on all cylinders.... anyways you thoughts and advice are appreactied in advance
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post #2 of (permalink) Old 09-10-2006, 09:10 PM
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Re: 98 blazer rough idle

the 02s don't last forever.

is this a tbi motor? or one of those motors with the crazy tube system gm used for a few years?
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post #3 of (permalink) Old 09-10-2006, 10:28 PM Thread Starter
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Re: 98 blazer rough idle

the spider injection is what i call it an i checked it for prseure bypass wiuth the engine off key and it had none... I know the 02 wont last forever but ive never seen 1 cuase a miss ...
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post #4 of (permalink) Old 09-11-2006, 11:24 AM Thread Starter
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Re: 98 blazer rough idle

well as of this morning i broke down took it to the dealrship stayied for bout a hour when i left i didnt fell so bad beacuse teir was 5 mechainics scrathing their heads at my truck LOL told them to call me when its done
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post #5 of (permalink) Old 09-11-2006, 07:34 PM Thread Starter
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Re: 98 blazer rough idle

well i guess im talking to myself but guess what i picked the blazer up drove it home and the #$#@$#@$ thing stile miss's they said it was the right bank 1,3,5, so they changed them well it still missing its going back in the morning ... im mad not even want to talk about it anymore!
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post #6 of (permalink) Old 09-12-2006, 07:54 PM Thread Starter
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Re: 98 blazer rough idle

problem fixed cracked dist....
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post #7 of (permalink) Old 09-13-2006, 05:22 PM
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Re: 98 blazer rough idle

always the last place you look
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post #8 of (permalink) Old 10-06-2006, 01:03 PM
 
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Re: 98 blazer rough idle

Glad to hear you got it fixed.
I would have suggested the EGR first, but its fixed.
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