rough idle
03-04-2009, 04:20 PM
#1
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Scikotics
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Location: Niceville, FL
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rough idle
out of no where my car is idling rough. sounds like a muscle car at idle not like an import and feels like it about to stall. Any ideas what this might be? also i took it into dealership beacause there was a really loud clicking sounds they said it was normal. Now it seems to be getting louder and louder.
03-04-2009, 06:48 PM
#4
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No CEL and ruff idle seems weird. I was going to say that it could be spark plugs or fule injectors. Or something causing non-combustion. But no CEL is very strange, because if it was a ruff idle due to a miss fire the CEL would come on. (Or it should).
I know our engines make some valve noise, but getting louder is not a good thing. I would say checked your oil level to make sure it is correct.
I know our engines make some valve noise, but getting louder is not a good thing. I would say checked your oil level to make sure it is correct.
03-04-2009, 06:58 PM
#6
im also have a ruff idle and also when slowing down or roling my rpm jumps up and down like if i had cams or somthing and ideas some one said to clean my MAF but i dunno i started doing that after i went thew a puddle but the car starts fine
03-04-2009, 07:21 PM
#9
i have an o5 manual tc and the idle was horrible in my car.
i cleaned the cai filter. no cel.
the idle was around 400-500 and it jumped to 700 than back to 400
if i turned the a/c on the car started to shake really bad!
the fix :
took the little breather off the engine and throw it away and connected back to the intake with a hose.
and did the seafoam cleaning before the oil change.
bought a MAF cleaner spray and cleaned the maf sensor
now my idle is good and its not shaking that much when i turn on the a/c
since then i tried to clean the throttle body but no change.- i mean.. my fairly good idle didnt get any better.
so take off the breather and sefoam it!
ps:
if u have cold air intake you cant pour the sefoam in the intake!!!!!!!!!!!!! it will came out at the filter! pour it in the brake booster.
i cleaned the cai filter. no cel.
the idle was around 400-500 and it jumped to 700 than back to 400
if i turned the a/c on the car started to shake really bad!
the fix :
took the little breather off the engine and throw it away and connected back to the intake with a hose.
and did the seafoam cleaning before the oil change.
bought a MAF cleaner spray and cleaned the maf sensor
now my idle is good and its not shaking that much when i turn on the a/c
since then i tried to clean the throttle body but no change.- i mean.. my fairly good idle didnt get any better.
so take off the breather and sefoam it!
ps:
if u have cold air intake you cant pour the sefoam in the intake!!!!!!!!!!!!! it will came out at the filter! pour it in the brake booster.
03-04-2009, 08:35 PM
#13
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Scikotics
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Location: Minneapolis, MN
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Dont change your plugs unless there are clear signs of fouling (and in that case figure out why). The car comes with plugs that will run 100,000 miles (iridiums), so you are either going to throw away money on inferior, shorter life plugs or spend too much for he same plugs and most likely not need them.
Did you just happen to do anything (like installing the cai) that would have caused you to disconnect the battery? If so, you will need to drive the car a bit as the ECU "relearns" after the reset.
Idling at around 700 rpm is completely normal. If it is rough, there could be other issues. If it only stutters now and then when the AC (or defrost) is on, tha is normal as well since idle will stutter a bit when the compressor kicks on and off.
Did you just happen to do anything (like installing the cai) that would have caused you to disconnect the battery? If so, you will need to drive the car a bit as the ECU "relearns" after the reset.
Idling at around 700 rpm is completely normal. If it is rough, there could be other issues. If it only stutters now and then when the AC (or defrost) is on, tha is normal as well since idle will stutter a bit when the compressor kicks on and off.
03-04-2009, 08:42 PM
#14
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Location: Miami, FL
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true bout the miles on the plugs but were unsure as to if he changed them i remember when i was n/a adn i changed my plugs the car had an extremely funky idle. then i changed them back and it was allgood.
03-05-2009, 06:45 PM
#15
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well there are only 20k mile son my car so i don't think i'm gunna change the plugs. as for the intake filter , can you clean an injen filter or must you buy a new one. then reset ucu and check and see if maf sensor is dirty.
03-05-2009, 06:49 PM
#16
i already told you what to do with it.
but here it is again:
go to a store.. buy MAF cleaner and seafoam ( it will be like 10 dollars maybe.. get them both so you dont have to drive back and forth if the maf cleaning wont help u out at all)
get a new filter if u want but unless its really dirty it wont change your idle. clean your maf.. change the filter reset the ecu. if it wont help u then do the seafoam thing.
but here it is again:
go to a store.. buy MAF cleaner and seafoam ( it will be like 10 dollars maybe.. get them both so you dont have to drive back and forth if the maf cleaning wont help u out at all)
get a new filter if u want but unless its really dirty it wont change your idle. clean your maf.. change the filter reset the ecu. if it wont help u then do the seafoam thing.
