po302 code 99 4runner 3.4
11-29-2008, 08:03 PM
#1
Registered User
Thread Starter
Join Date: Nov 2008
Location: san diego via michigan
Posts: 33
Likes: 0
Received 0 Likes
on
0 Posts
po302 code 99 4runner 3.4
tested and got po302 code miss fire cylinder 2 detected...
i changed spark plugs and the coil pack that was supposedly bad...
used ngk g power plat spark plugs
duralast wires
duralast coil pack
reset computer
i started it up ran smooth drove to lowes, it ran very good.when i came out and started it.it was shuttering again and flashed the check engine light again. i need to fix the problem before monday as to i am in the marine corps and have no other ride...dont really want to drive it in this condition...please if some one has any ideas...thanks in advance
i changed spark plugs and the coil pack that was supposedly bad...
used ngk g power plat spark plugs
duralast wires
duralast coil pack
reset computer
i started it up ran smooth drove to lowes, it ran very good.when i came out and started it.it was shuttering again and flashed the check engine light again. i need to fix the problem before monday as to i am in the marine corps and have no other ride...dont really want to drive it in this condition...please if some one has any ideas...thanks in advance
11-30-2008, 01:12 PM
#3
Your #2 cylinder is the front of the engine driver's side..Usually coil pack will cause 2 cylinder missfire codes...
couple of questions:
Did you use the correct 2 grounded plugs?
Were the plugs dropped accidently and the gap has collapsed?
Is that wire fully seated on the plug?
Is the corresponding coil that triggers that wire snapped in all the way?
Is that coil pack harness connector clipped in all the way?
Most likely it is an ignition problem,I highly doubt an injector,compression problem,or it would miss all the time,even after new parts..
I would take your time and double check all the parts/steps you just did on your truck...and its not impossible you got a bad wire/coil from VatoZone...
couple of questions:
Did you use the correct 2 grounded plugs?
Were the plugs dropped accidently and the gap has collapsed?
Is that wire fully seated on the plug?
Is the corresponding coil that triggers that wire snapped in all the way?
Is that coil pack harness connector clipped in all the way?
Most likely it is an ignition problem,I highly doubt an injector,compression problem,or it would miss all the time,even after new parts..
I would take your time and double check all the parts/steps you just did on your truck...and its not impossible you got a bad wire/coil from VatoZone...
11-30-2008, 04:31 PM
#4
Registered User
Thread Starter
Join Date: Nov 2008
Location: san diego via michigan
Posts: 33
Likes: 0
Received 0 Likes
on
0 Posts
thanks for the advice...today i had a full scan not just a single code reader..he said it was like a real time diagnostic reader,anyways it tested everything gave voltages...everything i changed was good. the only thing that was bad was the rear o2 sensor...so i too out the 67$ coil i bought took it back and got an o2 sensor.113 dollars and ten mins if my time...it could have used plugs and wires anyways but boy am i happy that its fixed now...
i think im going to invest in a diagnostic readers..he said it was 180$. it would pay for itself for sure...the next project is going to be some preventive maintence plan on doing a new timing belt and water pump...i hope to get at least 400k from this engine...thanks again for your advice
i think im going to invest in a diagnostic readers..he said it was 180$. it would pay for itself for sure...the next project is going to be some preventive maintence plan on doing a new timing belt and water pump...i hope to get at least 400k from this engine...thanks again for your advice
Thread
Thread Starter
Forum
Replies
Last Post
Jnkml
95.5-2004 Tacomas & 96-2002 4Runners
3
07-06-2015 01:20 PM
