Hiccup

kastkc · 09-09-2005, 09:56 AM

Recently my car (02 2.5 RS) has started hiccuping. At idle, every few seconds there is a studder or hiccup and you can feel the car shake for a second. Once and a while under acceleration it will do it also. I thought maybe it was bad gas, but I filled up today, differnt station and same thing. No CEL's or anything. I am really confused as to what this can be, anyone have any ideas?

Thanks

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DreddRS25 · 09-09-2005, 10:33 AM

I'd check the coil pack, look for corrosion.

When was the last time you changed the fuel filter?

Two good places to start.

kaisersouse · 09-09-2005, 10:47 AM

also check plugs/wires

2slofouru · 09-09-2005, 12:06 PM

Mine does the same thing but I have 2.5d and 1.8 ecu with bigger exhaust.

My plug wires appear to be original and the coilpack measured fine. I also swapped coilpack with my other from the 1.8 and the same hiccup. I have one month old NGK plugs. Where is the best place to get plug wires for the dohc other than the dealer? I don't want to get some generic "super spark" or "sparkarama" from Hilo or autozone, etc..

kastkc · 09-09-2005, 12:41 PM

Quote:

Originally Posted by DreddRS25

I'd check the coil pack, look for corrosion.

When was the last time you changed the fuel filter?

Two good places to start.

Was thinking the same. I have'nt changed the fuel filter yet.

Thanks

DreddRS25 · 09-09-2005, 01:20 PM

My car hiccups after every fill up. People say it is probably due to the sediment in the fuel tank being stirred up

I'm not sure. Still happens, but it was a lot more like a buck before I swapped out my fuel filter.

Was thinking. May even be, ever so slightly, the A/F sensor (or front oxygen sensor). How has your mileage been? If its still ok then your mileage shouldn't be effected too much.

kastkc · 09-09-2005, 02:01 PM

Mileage has been fine.

09-09-2005, 09:56 AM	#1
kastkc Scooby Newbie Member#: 51141 Join Date: Dec 2003 Chapter/Region: MWSOC Location: SW Chicago Vehicle: 2013 WRX PBP	Hiccup Recently my car (02 2.5 RS) has started hiccuping. At idle, every few seconds there is a studder or hiccup and you can feel the car shake for a second. Once and a while under acceleration it will do it also. I thought maybe it was bad gas, but I filled up today, differnt station and same thing. No CEL's or anything. I am really confused as to what this can be, anyone have any ideas? Thanks * Registered users of the site do not see these ads.

09-09-2005, 12:06 PM	#4
2slofouru NASIOC Supporter Member#: 90539 Join Date: Jul 2005 Chapter/Region: South East Location: somewhere east of CA Vehicle: 95 L with ej20k powa, Raven R6	Mine too Mine does the same thing but I have 2.5d and 1.8 ecu with bigger exhaust. My plug wires appear to be original and the coilpack measured fine. I also swapped coilpack with my other from the 1.8 and the same hiccup. I have one month old NGK plugs. Where is the best place to get plug wires for the dohc other than the dealer? I don't want to get some generic "super spark" or "sparkarama" from Hilo or autozone, etc..

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09-09-2005, 10:33 AM	#2
DreddRS25 Scooby Specialist Member#: 51642 Join Date: Dec 2003 Chapter/Region: TXIC Location: San Antonio, Texas Vehicle: 2001 Impreza RS BRP	I'd check the coil pack, look for corrosion. When was the last time you changed the fuel filter? Two good places to start.

09-09-2005, 10:47 AM	#3
kaisersouse Scooby Specialist Member#: 85900 Join Date: Apr 2005 Chapter/Region: NESIC Location: Maine Vehicle: 2001 Forester S White	also check plugs/wires

09-09-2005, 01:20 PM	#6
DreddRS25 Scooby Specialist Member#: 51642 Join Date: Dec 2003 Chapter/Region: TXIC Location: San Antonio, Texas Vehicle: 2001 Impreza RS BRP	My car hiccups after every fill up. People say it is probably due to the sediment in the fuel tank being stirred up I'm not sure. Still happens, but it was a lot more like a buck before I swapped out my fuel filter. Was thinking. May even be, ever so slightly, the A/F sensor (or front oxygen sensor). How has your mileage been? If its still ok then your mileage shouldn't be effected too much.

09-09-2005, 02:01 PM	#7
kastkc Scooby Newbie Member#: 51141 Join Date: Dec 2003 Chapter/Region: MWSOC Location: SW Chicago Vehicle: 2013 WRX PBP	Mileage has been fine.