whats wrong with my car..?
#1
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whats wrong with my car..? :update:
its about 91degrees/60%humidity. i start my car and begin to leave school. i get into a turn around to head the opposite way and the idle is feelin rough. so im waiting my chance to turn and then get a break. as i begin to give it throttle it is hesitating to move, and then goes, and then hesitates...i give it more gas and it slowly starts to get going. i dove home and it never happened again
this has hapened b4 but was worse the first time. this time wasnt that bad. the things that came to mind were fuel filter, fuel pump, bad 02's, hot weather.
what u think?
J
this has hapened b4 but was worse the first time. this time wasnt that bad. the things that came to mind were fuel filter, fuel pump, bad 02's, hot weather.
what u think?
J
Last edited by heyitsTaJay; 06-15-2004 at 02:25 PM.
#6
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Originally Posted by heyitsTaJay
fuel filter, fuel pump, bad 02's,
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if it was bad o2's you would throw and ses light? right? So I doubt it is the o2's. If you are throwing codes get it diagnosed and you should figure it out quick.
sorry couldnt be anymore help.,
sorry couldnt be anymore help.,
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#9
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Bad O2s, Bad Fuel Pumps, and Clogged Fuel Filters dont always throw codes.
Although it is possible that none of those are the problem. Those are just the most likely culprits.
Although it is possible that none of those are the problem. Those are just the most likely culprits.
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CAR DID IT AGAIN! it has to be the weather that is triggering this effect. its hot as *** outside. just like before. it started doing it again after i ran a few errands. i start up the car and it starts bogging down then going then idling rough then bogging down. i throw it in N and rev it up. it revs up fine then i put it bak in D and it starts chuggin along. i get out on to the raod and its driving like ****! i was hoping to throw a code and I DID. i pull over let the car sit and try driving again. does the same ****. stop the car, turn it off, and wait about a minute. start it up and its fine! so i go to autozone and the cod is PO300 multiple cylinder misfire.
what do i do now...?
J
what do i do now...?
J
#13
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A multiple missfire is not necessarily a permanent condition. It can come-and-go. Check the plugs and wires. Maybe there are some bad plugs or the wires are shorting or RFI is leaking in. Its also possible that the plugs and wires are fine. Other culprits are the IAT sensor, MAF sensor, and Idle Control Vavle. If it only happens on very hot days, then bad readings from the sensors or a badly operating idle control valve can cause a bad idle and part throttle. It may confuse the computer and cause a misfire (this is a guess).
Last edited by VIP1; 06-15-2004 at 02:58 PM.
#15
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Radio Frequency Interference
Its the Eletromagnetic Noise that the shielding on the plug wires is supposed to filter out (lessen anyway). If the casing has gone bad then the plugs could be arcing or if the caseing isnt that bad, RFI can leak out and interfere with other wires and cause audible noise in the radio.
Its the Eletromagnetic Noise that the shielding on the plug wires is supposed to filter out (lessen anyway). If the casing has gone bad then the plugs could be arcing or if the caseing isnt that bad, RFI can leak out and interfere with other wires and cause audible noise in the radio.
#17
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There are others here that can better answer plug and wire selection. Plugs and wires from AutoZone aren't bad, they just may not be performace editions like Taylor 10mm wires or NGK plugs. Although there was a thread in which someone said that AC Delco (or another brand starting with "A") used rebadge NGK pulgs.
#18
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Here is a site on how to read spark plugs:
http://www.densoiridium.com/howtoreadusedplugs.php
I did some searching. Many people recommend TR55 (stock# 3951) for N/A and TR6 (stock# 4177) for Nitrous motors. Some also recommend Denso Irridiums. AC Delco (stock) and Bosch +4 are a toss-up. Some love them, some hate them. They work and they are available from AutoZone. If you need pulgs now, then a set of Bosch premium wires and +4 plugs should be fine and last longer (although not really performance oriented). Here is a link so you see what I mean: https://ls1tech.com/forums/showthrea...ight=delco+ngk
http://www.densoiridium.com/howtoreadusedplugs.php
I did some searching. Many people recommend TR55 (stock# 3951) for N/A and TR6 (stock# 4177) for Nitrous motors. Some also recommend Denso Irridiums. AC Delco (stock) and Bosch +4 are a toss-up. Some love them, some hate them. They work and they are available from AutoZone. If you need pulgs now, then a set of Bosch premium wires and +4 plugs should be fine and last longer (although not really performance oriented). Here is a link so you see what I mean: https://ls1tech.com/forums/showthrea...ight=delco+ngk
Last edited by VIP1; 06-15-2004 at 03:32 PM.
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Originally Posted by VIP1
Here is a site on how to read spark plugs:
http://www.densoiridium.com/howtoreadusedplugs.php
I did some searching. Many people recommend TR55 (stock# 3951) for N/A and TR6 (stock# 4177) for Nitrous motors. Some also recommend Denso Irridiums.
http://www.densoiridium.com/howtoreadusedplugs.php
I did some searching. Many people recommend TR55 (stock# 3951) for N/A and TR6 (stock# 4177) for Nitrous motors. Some also recommend Denso Irridiums.
thank you for searching. i searched and found nuttin. if i autotap it could i start to diagnose the problem quicker?
#20
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I added more to the end of my post above.
Autotap (ot other logging software) will help. I have no experience with it, so I cant help you on how to use it.
Autotap (ot other logging software) will help. I have no experience with it, so I cant help you on how to use it.