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Got a 98 suburban with code po301 any idea - 1988 Chevrolet Suburban

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P0301 IS MISS FIRE DETECTED CYLINDER NUMBER ONE, THIS CAN BE IGNITION (PLUG, COIL) OR FUEL (DEFECTIVE INJECTOR) OR A VACUUM LEAK AT INTAKE OR LOW COMPRESSION IN THAT CYLINDER

Posted on Jul 17, 2009

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Posted on Jan 02, 2017

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2002 ranger 2.3 codes po171 and po301 changed upstream o2 sensor still get codes any ideas?


P0301 is a engine misfire code for #1 cylinder , spark plug or plug wire problem or a bad fuel injector . Po171 system lean code . Lack of fuel , clogged fuel filter , vacuum leak . https://www.obd-codes.com/p0171 There are ways to test O2sensors before replacing . Your best bet take your vehicle to a qualified repair shop .

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ONCE WARMED UP AND DRIVING ALONG, IT STARTS MISFIRE,THEN IT WILL LIKE KICK IN AND NOT MISFIRE,IT KEEPS DOING THIS,,SOMETIMES I LET OFF GAS,THEN GIVE IT GAS,IT RUNS GOOD FOR A FEW SECONDS,THEN MISFIRES


First, it will go a lot better if you tell us what it is... Make, model, year.

Could be loose wire to ignition, computer or fuel system. Without knowing what the car or truck is, the codes don't help.

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What does codes po301 and po173? i have a 95 maxima 130000 miles


Code PO301 is number one cylinder; misfire detected.

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Feb 25, 2015 | Cars & Trucks

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I have a 97 ford expedition 4.6L im having some trouble with. It started having some hesitation and sputtering in the acceleration and some backfiring when driving. First code said too rich or too lean in...


this may or may not help.
i have a 98 F150 with a 4.6 that i had an independent garage change the plugs and coil packs after i had the same problems you did. i had to take it back to him several times after and it never ran correctly, out of frustration i called the dealer where i bought the truck and took it to them. this was a small dealer about 200 miles from where i live, but my family is there. no large dealer ****, just leave the truck with us. one week later i got it back with everything fixed and it has run flawlessly since 2005. i was told that the problem was (1) the 1st guy didnt know what he was doing. (2) aftermarket parts didnt work. sounds like a load,but...

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98 Chevy Suburban. Turns over great, runs for a second then dies. If i....keep....trying it does the same and then eventually stays running. I hear the fuel pump and the fuel filter has been replaced. Any...


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98 E-250 Rough Idle; codes p0156,p1131,p1151,p0301,p0171,p0174+


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i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
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what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes

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1988 5.7 TBI Nightmare This is the start of what the problem was and is, I had a RV cam installed when the engine was rebuilt a year ago. the cam was not a computer friendly cam so after a round with the rebuilder and discovering the specs weren't the correct ones for the cam I installed a 3702 edelbrock cam and lifters with a 7800 timing chain and gear set after I had tried two chips from Jet and no improved performance and the 3rd chip was to be for the cam and that is what is in the ECU now and I have tried about 5 different BCC chips and the bottom line is the power is there but something is happening its hit and miss the idle will sometimes lope, is stalled when first started and acts as if its starving for fuel or its bogged with to much fuel. the fuel pressure is 10 - 13 psi and I have R/R the TPS, IAC, ESC and knocks device , EGR and Solenoid, MAP, Temp sensor, and the Dist is a Procomp 10001 with a MSD-5526 coil. the Throttle Body was rebuild and the ECM was replaced with a Rebuilt ECM. it will smell rich etc. but with the things that goes on it does not show any codes?? I have no clue just feel stupid this is been a simple thing that is kicking my **** and now its a challenge but still loosing the fight too far in and too much spent to stop,. LOL Help !!!! The BCC is a california vehicle AFBX, 5.7TBI TH400 A/T P.S. the key can be turned of and back on as the engine not dying and seems to correct the power and run problems but will not last goes back to running bad or with problems. ?

Jul 26, 2012 | 1988 Chevrolet Suburban

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