Its not a coil pack
01-27-2009, 09:15 AM
#1
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Posts: 42
Its not a coil pack
So my buddy down in Georgia calls me after his WHEEL on his 99 max falls off (overtightened the lugs although he says he didnt hes a dumbass what can i say) so he has it towed to a local garage and they fix that problem... he also has them fix the CEL which was a purge control valve for the canister and crackshaft pos sensor... Normal crap yada yada
He gets the car back its running like complete dooooookie and his CEL is flashing so he calls me... i said you probably got a bad coil so bring it back and hes like ok... he calls me yesterday and says they said the coil is fine (they swapped it and misfire stayed on Cyl. 3) they also did a Compression test and it came back good, so i said check the main harness and test the wires to the coil because there could be a break... they do that and they call him and say we dont know what the problem is and we are not going to charge you DIAG time so come pick up your car......
What do you guys think?? i told him possibly the crank sensor might be defective but its only throwing a Cylinder 3 misfire or it might be the ECU....??? let me know
He gets the car back its running like complete dooooookie and his CEL is flashing so he calls me... i said you probably got a bad coil so bring it back and hes like ok... he calls me yesterday and says they said the coil is fine (they swapped it and misfire stayed on Cyl. 3) they also did a Compression test and it came back good, so i said check the main harness and test the wires to the coil because there could be a break... they do that and they call him and say we dont know what the problem is and we are not going to charge you DIAG time so come pick up your car......
What do you guys think?? i told him possibly the crank sensor might be defective but its only throwing a Cylinder 3 misfire or it might be the ECU....??? let me know
01-27-2009, 09:58 AM
#2
Well you checked for spark and compression on that cylinder, but did you check fuel?
Surprised you went through the trouble of doing a full compression test without just ohming out the injector.
So they swapped two coil packs, reset the codes and it came back up as cylinder 3? If they didn't reset the codes, of course it would have still read a P0303.
Surprised you went through the trouble of doing a full compression test without just ohming out the injector.
So they swapped two coil packs, reset the codes and it came back up as cylinder 3? If they didn't reset the codes, of course it would have still read a P0303.
01-27-2009, 10:38 AM
#4
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Ya well it wasnt me doing the testing he down in georgia and that is a GREAT question (did they check the injector) <- For some reason i didnt think that.. but let me ask you guys one question he said the car was runnin A+ before all this ... would the injector have shown some symtoms ?? Thanks for the support
01-27-2009, 10:45 AM
#7
The shop should know to check the injector, apparently they fail at diagnosing.
01-27-2009, 12:51 PM
#11
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so supposedly they also checked the injector but i told him if they couldnt figure it out stop dinking around and take it to the local stealership and get it diagnosed because hes all alone down there and who knows if these guys actually did all the tests they said they did
01-27-2009, 01:27 PM
#14
You can check the codes for free yourself, only takes like 5 minutes. Granted though, a code reader is nice to have sometimes.
02-02-2009, 11:30 AM
#18
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so get this... i always thought this place either didnt know what they were doing or they just didnt even look at the car and they lied... so i tell my buddy go to an autozone get the code pulled and if it only says CYL # 3 misfire then buy a coil pack and replace it... so he did and guess fricken what... no more running sh!tty??? that place SUCKED??? he told them that he thought it was the coil... ITS A 99 maxima i mean ???? they suck
06-03-2009, 09:14 PM
#19
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DEFINITIVE ANSWER FOR MISFIRE FINALLY!
OK I have a 96 gxe I got a good deal on it cause the owner could not find the cause of a bad misfire that comes and goes. He had swapped coil packs one at a time with a new one, checked codes, ruled out fuel pressure (48), and fuel pump. He checked everything he could think of and he was a mechanic. I bought it brought it honme and retraced everything and redid it all. Turns out it was the spark plugs. It had autolite double platinum in it, i threw those out and dropped in some NGK VPOWERs. Instantly the miss was gone, and shes running smooth as silk with over 220,000 miles. I spent all night reading most all of the posts here on this subject. The bottom line is this. My cause had a TERRIBLE miss at idle, and while cruising under light throttle, but if you get down in it it smoothed out until the rpms dropped below about 2000 at highway speed. The plugs werent in bad shape, but it seems the resistance is too much to pass through the plug at the right time resulting in a dead miss under light throttle. I put in the NGK and immediately the miss and jerk and pop in the exhaust was gone and has not come back under any throttle or load conditions. WORD to the wise, use NGKs in your max, period. I swapped a new coil to each cyl, no change. Listened to the injectors with a long piece of wood (works better than a screwdriver, more resonance) nothing wrong there. I drop in the plugs, and boom, done. Im a NGK believer with these cars.
Let me get this straight,your Honda has 1.5 litres, where as my bottle of MT. Dew has 2?
OK I have a 96 gxe I got a good deal on it cause the owner could not find the cause of a bad misfire that comes and goes. He had swapped coil packs one at a time with a new one, checked codes, ruled out fuel pressure (48), and fuel pump. He checked everything he could think of and he was a mechanic. I bought it brought it honme and retraced everything and redid it all. Turns out it was the spark plugs. It had autolite double platinum in it, i threw those out and dropped in some NGK VPOWERs. Instantly the miss was gone, and shes running smooth as silk with over 220,000 miles. I spent all night reading most all of the posts here on this subject. The bottom line is this. My cause had a TERRIBLE miss at idle, and while cruising under light throttle, but if you get down in it it smoothed out until the rpms dropped below about 2000 at highway speed. The plugs werent in bad shape, but it seems the resistance is too much to pass through the plug at the right time resulting in a dead miss under light throttle. I put in the NGK and immediately the miss and jerk and pop in the exhaust was gone and has not come back under any throttle or load conditions. WORD to the wise, use NGKs in your max, period. I swapped a new coil to each cyl, no change. Listened to the injectors with a long piece of wood (works better than a screwdriver, more resonance) nothing wrong there. I drop in the plugs, and boom, done. Im a NGK believer with these cars.
Let me get this straight,your Honda has 1.5 litres, where as my bottle of MT. Dew has 2?
06-03-2009, 09:16 PM
#20
DEFINITIVE ANSWER FOR MISFIRE FINALLY!
OK I have a 96 gxe I got a good deal on it cause the owner could not find the cause of a bad misfire that comes and goes. He had swapped coil packs one at a time with a new one, checked codes, ruled out fuel pressure (48), and fuel pump. He checked everything he could think of and he was a mechanic. I bought it brought it honme and retraced everything and redid it all. Turns out it was the spark plugs. It had autolite double platinum in it, i threw those out and dropped in some NGK VPOWERs. Instantly the miss was gone, and shes running smooth as silk with over 220,000 miles. I spent all night reading most all of the posts here on this subject. The bottom line is this. My cause had a TERRIBLE miss at idle, and while cruising under light throttle, but if you get down in it it smoothed out until the rpms dropped below about 2000 at highway speed. The plugs werent in bad shape, but it seems the resistance is too much to pass through the plug at the right time resulting in a dead miss under light throttle. I put in the NGK and immediately the miss and jerk and pop in the exhaust was gone and has not come back under any throttle or load conditions. WORD to the wise, use NGKs in your max, period. I swapped a new coil to each cyl, no change. Listened to the injectors with a long piece of wood (works better than a screwdriver, more resonance) nothing wrong there. I drop in the plugs, and boom, done. Im a NGK believer with these cars.
Let me get this straight,your Honda has 1.5 litres, where as my bottle of MT. Dew has 2?
OK I have a 96 gxe I got a good deal on it cause the owner could not find the cause of a bad misfire that comes and goes. He had swapped coil packs one at a time with a new one, checked codes, ruled out fuel pressure (48), and fuel pump. He checked everything he could think of and he was a mechanic. I bought it brought it honme and retraced everything and redid it all. Turns out it was the spark plugs. It had autolite double platinum in it, i threw those out and dropped in some NGK VPOWERs. Instantly the miss was gone, and shes running smooth as silk with over 220,000 miles. I spent all night reading most all of the posts here on this subject. The bottom line is this. My cause had a TERRIBLE miss at idle, and while cruising under light throttle, but if you get down in it it smoothed out until the rpms dropped below about 2000 at highway speed. The plugs werent in bad shape, but it seems the resistance is too much to pass through the plug at the right time resulting in a dead miss under light throttle. I put in the NGK and immediately the miss and jerk and pop in the exhaust was gone and has not come back under any throttle or load conditions. WORD to the wise, use NGKs in your max, period. I swapped a new coil to each cyl, no change. Listened to the injectors with a long piece of wood (works better than a screwdriver, more resonance) nothing wrong there. I drop in the plugs, and boom, done. Im a NGK believer with these cars.
Let me get this straight,your Honda has 1.5 litres, where as my bottle of MT. Dew has 2?
You've posted it twice already, it'll be seen.
FWIW, that fuel pressure is too high.
06-03-2009, 09:19 PM
#21
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Join Date: Jun 2009
Posts: 7
Im just trying to help the poor saps out there dumping all thier money into parts at someones advice when they can spend 12 bucks and fix thier car. No one ever brought this up until I discovered it today. Ive read almost ALL the posts on this :-)
06-03-2009, 09:23 PM
#23
Generally if one has a misfire, the first thing you change is the plugs. That's why it's usually never brought up, as it's common sense and expected.
06-03-2009, 09:28 PM
#24
You don't happen to drive a dark colored Max on rims, altezzas, dark tint, etc?
06-03-2009, 09:30 PM
#25
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Join Date: Jun 2009
Posts: 7
yes but u know the whole ngk vs bosch and or anything else argument. i say the ngks are designed with proper resistance in mind to start with, so the spark gets there at full energy when its supposed too. I even saw where the #5 was arcing through the ceramic near the electrode and had made 3 red lines while arcing to the head instead of placing it near the mixture. The weird thing is, after i changed #5 i did the front bank. I tested it after each plug install. It didnt smooth out untill ALL of the ngks were in.
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