| From | Message |
fred911
Dodge Dakota
JOIN HERE
3/19/2004
20:55:44
|
 Subject: new everything still missfireing
IP: Logged
Message:
hey all i need a little mechanic help. new cap,button,plugs,wires injectors thats was expenseve but i got em... it was on a 1999 dodge dakota 5.2 magnum. something eles exhaust fell off so i fixed it for know with 1 straight pipe going back with a putched out cat could that be causing any thing thanks yall
|
dakdan
Dodge Dakota
JOIN HERE
3/21/2004
16:12:19
|  RE: new everything still missfireing
IP: Logged
Message:
Have you cheched your plug wires, sometimes they can get crossed in the changeout.(most common problem)
|
fred911
Dodge Dakota
JOIN HERE
3/21/2004
20:45:28
| RE: new everything still missfireing
IP: Logged
Message:
na man its all good double check it evryone is good except for # 8.its as black as it could be so any more ideals thanks for that one
|
ticats
Dodge Dakota
JOIN HERE
3/22/2004
06:56:27
| RE: new everything still missfireing
IP: Logged
Message:
Is the MIL on because of the gutted cat?
|
fred911
Dodge Dakota
JOIN HERE
3/22/2004
08:56:01
| RE: new everything still missfireing
IP: Logged
Message:
hey i'm not sure what that even is.. its got everything but not for sure about that do mine to explain what that is thanks
|
ticats
Dodge Dakota
JOIN HERE
3/22/2004
09:26:03
| RE: new everything still missfireing
IP: Logged
Message:
MIL on = Check Engine lamp in the dash is lit because one or more diagnostic trouble codes has been stored in the computer. On 99s, the only way to see what codes are stored in the computer is with a scanner. Autozone (probably other nationwide auto franchises) will scan it for you for free. Then you need to find out what the codes represent.
|
mforren
Dodge Dakota
JOIN HERE
3/22/2004
11:30:17
| RE: new everything still missfireing
IP: Logged
Message:
done did that all it says its missfiring on cyl #8... not giving no codes. i even had the truck on a better snap on computer and it didnt read nothing except for upstream o2 sensor and it was reading the same as the other.. its even confusing my mechanic..... so thanks any more ideals
|
ticats
Dodge Dakota
JOIN HERE
3/22/2004
14:44:17
| RE: new everything still missfireing
IP: Logged
Message:
I have read of a Dak owner that had a misfire in cyl #8. He eventually found out that he had a leak in the belly pan gasket (intake barrel manifold gasket) just enough to get oil into cyl #8 which caused the misfiring. Any wet oil besides the black carbon on the #8 spark?
ticats, ontario, canada
97 Dak CC Sport, 5.2L, 44RE, 4.56 SG, race weight 4,120 lb., 13.98 @ 99.85 (650' elevation)
|
mforren
Dodge Dakota
JOIN HERE
3/22/2004
14:56:56
| RE: new everything still missfireing
IP: Logged
Message:
no theres no oil on plugs but there is gas.. when i first start it up it will spudder and gag it will idle about 600.. take off down the road for bout 1 mile park it leaving it running it will staart sucking for air and it will have real strong gas smell real strong enough to burn your eyes like it aint burning it all..got everything eles still nothing i put a idle air control sensor on still nothing so will that help any thanks
|
ticats
Dodge Dakota
JOIN HERE
3/22/2004
15:10:37
| RE: new everything still missfireing
IP: Logged
Message:
It's possible that it could be the iac although I have not read of faulty ones causes the strong gas smell that you're getting. Let me check to see if there's a way to test the iac (don't want to spend money needlessly :-) ).
You mentioned something about your exhaust. Are you sure that it's not completely plugged up?
|
daddio
Dodge Dakota
JOIN HERE
3/22/2004
15:44:43
| RE: new everything still missfireing
IP: Logged
Message:
double check that #8 plug and wire. if it's wet, it's not firing.
|
ticats
Dodge Dakota
JOIN HERE
3/22/2004
15:48:09
| RE: new everything still missfireing
IP: Logged
Message:
The only thing that can be tested is the ground and voltage input wires to the iac. The IAC motor is basically a stepper motor that the computer (PCM) uses to control the idle speed - it either works or not.
You mentioned that both O2 sensors were reading the same. Do you remember what voltages (range) the front O2 sensor was showing?
|
mforren
Dodge Dakota
JOIN HERE
3/22/2004
20:50:20
| RE: new everything still missfireing
IP: Logged
Message:
no exhaust is straight nothing no where.. the o2 sensor were reading about the same but im not for sure what they was..and the disriburtor is good..what it everything that would cause the firring thanks
|
dakdan
Dodge Dakota
JOIN HERE
3/22/2004
22:55:21
| RE: new everything still missfireing
IP: Logged
Message:
Have you tried running a compression check on 8. maybe a burnt valve fouling out your plug....
|
ticats
Dodge Dakota
JOIN HERE
3/22/2004
23:17:09
| RE: new everything still missfireing
IP: Logged
Message:
Here are all the things that I can think of that will cause misfiring:
Ignition coil / Spark plugs / Ignition circuit / Injector / Upstream HO2S / Compression pressure / Timing belt / Crankshaft position sensor / Air intake / Fuel pressure / Crankshaft position sensor circuit and connector / Bad tuning.
I gather that you are now temporarily running with a gutted cat and a pipe to the rear. Do you have both O2 sensors still plugged in and both in the exhaust system? If yes, I'm trying to figure out why you are not at least getting the Check Engine lamp lit and a trouble code for the rear O2 sensor. This does not explain away your problem but if this is the case you should have the lamp on and the code stored.
|
Finalrites
Dodge Dakota
JOIN HERE
3/23/2004
00:18:37
|  RE: new everything still missfireing
IP: Logged
Message:
Try driving it to the nearest cliff you can find and push it off. or drain out your oil,crank it up and put it out of it's misery!
|
mforren
Dodge Dakota
JOIN HERE
3/23/2004
10:11:59
| RE: new everything still missfireing
IP: Logged
Message:
ye thanks ticats the o2 sensors are still there the lite is on but all its reading is upstream o2 im going today for the computer again to see whatit is reading now and this is for finalrites the cliff thing is going but i like my truck..my buddy done that except for a pond and reported it stolen and its still there id like to have it but i cant get to it thnaks
|
WipLash
R/T
3/23/2004
23:08:05
| RE: new everything still missfireing
IP: Logged
Message:
It sounds like the #8 cylinder isn't igniting the air/fuel due to lack of compression. The black carbon fouling is usually caused from oil consumption. You probably have a broken compression ring on the #8 piston. The piston ring usually breaks when the piston land breaks or deforms. This is caused by detonation. The detonation on these engines is usually caused by the belly pan gasket leaking. It's called "cause and effect".
Do a compression check on the #8 cylinder. Otherwise, you are just guessing. If none of the shops you took your truck to thought of checking the compression in the #8 cylinder after confirming it is missfiring on that cylinder and everything else has already been replaced/checked then you need to find somewhere else to get your services done at. I'm sure they knew to do that, but they were just too damn lazy and were hoping you would just leave. They don't want the job of replacing a piston or piston rings. That means REBUILD 90% of the time and they don't won't to screw with.
|
anthony drew
Dodge Dakota
JOIN HERE
3/25/2004
14:48:34
| RE: new everything still missfireing
IP: Logged
Message:
Well i had a surging problem that was caused by a secondary ignition induction pretty much i had my coil wire right there with my plug wires....and it was causing it to crossfire....so maybe like someone earlier in the post said...it could be ur wires are crossing each other...from what i've heard and seen if they are crossed then it seems to always develop a misfire on cylinder 8....i don't have all the info...but there is tsb...for rerouting your plug wires...so if you haven't found the problem it wouldn't hurt to try rerouting the wires...just my 2 cents.....hope you find the problem...later
|
Tom Richman
Dodge Dakota
JOIN HERE
6/09/2004
20:39:54
| RE: new everything still missfireing
IP: Logged
Message:
It is eather the fuel pump or the fuel filter. Check and see what your fuel gauge is at. Mine was at a 1/4 of a tank.
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
