 New guy needs help!!! P0302 misfire |
 Dec 23, 2014 - 12:14 PM
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Enthusiast Joined Dec 23, '14 From United States Currently Offline Reputation: 0 (0%)  |
So I just picked up a 96 GT. Guy I got it from said it had a rough idle and check engine light would come on occasionally. Had a rough idle, but CEL was off when I test drove it. Of course it showed up the next morning...
So here is what I know now. CEL is throwing a P0302 code. It only happens if I let it idle for a bit, like warming it up on a cold morning. Before I drove it home after buying it (4hr drive) I cleared the light it and it never came on. At idle it is rough, but as soon as it comes about 1000rpm it smooths right out and runs really nice. I checked the plugs today, all looked good. It has midgrade NGK's in it. I've been looking for some pointers for a couple days now, and have searched on here. Most reference a coil/plug set-up. So does my Celica have just a standard single ignition coil mounted on the fire wall? How likely is it that plug wires are my issue? The ones on it are tiny and look to be a generic set. Would a set of better insulated NGK wires help? I know that wires can get interference and cause some firing issues if not well enough insulated. And help or input would be great. I'd like to at least narrow it down to 1 or 2 things before I start throwing money at it. |
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Jan 5, 2015 - 2:07 AM
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Enthusiast Joined Dec 23, '14 From United States Currently Offline Reputation: 0 (0%) |
Ok. So new cap and rotor are on. Drove for about 70 miles then the light came back on. The Cap and Rotor I took off looked to be good. There was a tiny bit of oil, but nothing really on the cap itself.
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Posts in this topic
freeriders98 New guy needs help!!! P0302 misfire Dec 23, 2014 - 12:14 PM
Marsstar505 Try running some seafoam through the vacuum booste... Dec 23, 2014 - 6:21 PM Box What's the idle speed? It should be around 85... Dec 23, 2014 - 6:32 PM freeriders98 Awesome thanks. All good info. So is it the consen... Dec 23, 2014 - 7:58 PM HaysoosKreesto I'd also say trying cleaning the throttle body... Dec 23, 2014 - 8:15 PM freeriders98 What distributor cap is recommended? Dec 23, 2014 - 8:58 PM HaysoosKreesto I like bosch products, but if you are unsure of wh... Dec 23, 2014 - 10:04 PM Box As far as plugs and wires go NGK wires with NGK pl... Dec 23, 2014 - 11:03 PM Bitter Check compression before you just go throwing mone... Dec 25, 2014 - 1:52 PM freeriders98 I haven't checked compression on it yet, but i... Dec 25, 2014 - 2:58 PM VavAlephVav A lot of people just haven't seen what good de... Dec 25, 2014 - 9:41 PM Bitter If it's running properly otherwise it's pr... Dec 25, 2014 - 10:58 PM freeriders98 I've got a Wells brand Cap and rotor coming, a... Dec 26, 2014 - 10:10 AM Marsstar505 The ignition coil is on the distributor side it th... Dec 26, 2014 - 11:03 AM Box Yep, RockAuto is where I buy my parts some 95% of ... Dec 26, 2014 - 5:02 PM Bitter No, it could still be a A/F issue if there's a... Dec 26, 2014 - 8:30 PM
freeriders98 QUOTE (Bitter @ Dec 26, 2014 - 8:30 ... Dec 27, 2014 - 11:03 AM Box Only thing would be careful with the carb cleaner ... Dec 27, 2014 - 4:06 PM Bitter Nah, carb cleaner won't hurt the injector o-ri... Dec 27, 2014 - 10:40 PM Box QUOTE (Bitter @ Dec 27, 2014 - 9:40 ... Jan 6, 2015 - 4:24 PM freeriders98 You can see the oil.That's all it is, if that ... Jan 5, 2015 - 2:15 AM freeriders98 Also I don't see a coil on the distributor, lo... Jan 5, 2015 - 6:50 PM Marsstar505 To fix that leak in the distributor you would have... Jan 6, 2015 - 4:42 PM Box Went and looked at pictures of the cap and on the ... Jan 6, 2015 - 4:49 PM freeriders98 Yeah the whole dozen of right answers always sucks... Jan 6, 2015 - 9:28 PM |
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