weird thing when braking

by **solara90** » Mon Apr 20, 2009 4:55 pm

well when im coming to a stop at a light or stop sign, just before im about to fully stop my rpms will go up to around 1,000 and then dump back down to around id say 700- 650 and kinda chug, and then itll go back up to normal idle. I'm thinking it could be my spark plugs? Any one else have ant ideas

by **grnsolara** » Mon Apr 20, 2009 5:03 pm

Plugs or plug wires definitely sound reasonable. If you don't find a problem there, I found mine in coil packs. Are you getting a check engine for a misfire?

Fuel filter or fuel pump are other possibilities.

by **solara90** » Mon Apr 20, 2009 5:07 pm

i haven't got a CEL, i got some plugs laying around ill replace em' and see what happens

grnsolara wrote:Plugs or plug wires definitely sound reasonable. If you don't find a problem there, I found mine in coil packs. Are you getting a check engine for a misfire?

Fuel filter or fuel pump are other possibilities.

by **grnsolara** » Mon Apr 20, 2009 5:18 pm

Ya w/ no CEL yet that rules out o2 sensor and EGR valve. I was having a similar problem, and it wound up being the front bank o2 sensor and EGR valve especially at idle and lower rpms. However, it threw a CEL.

Check it out, and tell me how it goes.

by **Midias** » Mon Apr 20, 2009 5:19 pm

How old are the plugs and what brand?

Also how many miles n the car and have you ever cleaned the throttlebody?

by **solara90** » Mon Apr 20, 2009 5:20 pm

around 97,000, no idea on the plugs bought the car back in September, and no no the TB

Midias wrote:How old are the plugs and what brand?

Also how many miles n the car and have you ever cleaned the throttlebody?

by **grnsolara** » Mon Apr 20, 2009 5:20 pm

oh...very good point Midias. Check the throttle plate too!

by **Midias** » Mon Apr 20, 2009 6:00 pm

grnsolara wrote:oh...very good point Midias. Check the throttle plate too!

I would clean the throttle plate and the entire throttlebody to get the idle air control.

by **solara90** » Mon Apr 20, 2009 6:09 pm

a couple of questions, does it matter if i clean the whole throttle body with MAF cleaner, or use carb cleaner? can i use carb cleaner on the IAC also? and do i remove the IAC from the TB?

Midias wrote:
grnsolara wrote:oh...very good point Midias. Check the throttle plate too!

I would clean the throttle plate and the entire throttlebody to get the idle air control.

by **Midias** » Mon Apr 20, 2009 6:17 pm

solara90 wrote:a couple of questions, does it matter if i clean the whole throttle body with MAF cleaner, or use carb cleaner? can i use carb cleaner on the IAC also? and do i remove the IAC from the TB?

Midias wrote:
grnsolara wrote:oh...very good point Midias. Check the throttle plate too!

I would clean the throttle plate and the entire throttlebody to get the idle air control.

I would use throttlebody cleaner to clean the throttlebody and IAC. and no you do not have to remove the IAC but it would not hurt.

by **~SolaRaSpeed~** » Mon Apr 20, 2009 7:09 pm

clean your TB and MAF (clean the maf with maf cleaner). Next, do a tune up (plugs, wires, fuel filter, seafoam) and then if that doesn't do it you might have a vacuum leak.

by **Mole** » Mon Apr 20, 2009 11:18 pm

is your AC on ?

by **Akfahad** » Tue Apr 21, 2009 7:24 am

when I had that problem, ended up being my IAC valve. But would definitely go first with what's being recommended....clean the TB, etc.

by **solara90** » Tue Apr 21, 2009 7:33 am

nope its only like 40 outside.. my heat was on :roll:

Mole wrote:is your AC on ?

by **makethemusic72** » Wed Apr 22, 2009 8:17 am

I had the same problem, I just cleaned out the throttle body with some throttle body cleaner and reassembled, and voila! my car idles correctly and evenly. took me 5 minutes!

weird thing when braking

weird thing when braking

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