thank you ahead of time for your help.
today after about 20 min on driving, my car started to idle at 1500rpm, and when I step on the gas it accreditated like normal but when I let off the gas it went to 2000-3500rpm's and then back to 1500. does anyone know what this is? please help!
Thanks!
Help! car problems! need assistance! idle problems!
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2002TuRboNeoN
- 2GN Member
- Posts: 163
- Joined: Mon Jan 29, 2007 6:07 pm
- Location: Buffalo, New York
check all your vacuum hoses make sure there on tight. soemtimes my mass airflow sensor come out and it ides funny...id check that out first, if youve done any cam work maybe the gears might be off a few degrees check the timing 2 if the vacuum hoses arent it
SRT-4 Swap into the 02, CAI, unorthodox UDP, turbo xs RFL BOV, Boomba solid MM, 3" downpipe


Check the rubber section between the intake manifold and the throttle body. If you don't have a hard pipe there, you could have a tear in the pipe that is small enough to where if you don't look close enough, you won't notice. Good luck
2003 Silver SXT - Totalled
2005 Silver Subaru Legacy 2.5GT Turbo -Daily
1990 White SR powered 240sx - My sliding slut.
I miss my neon at times. She treated me well and taught me a lot about cars in general. I will always have a special place in my heart for these cars. Heres to the 2gn community.
2005 Silver Subaru Legacy 2.5GT Turbo -Daily
1990 White SR powered 240sx - My sliding slut.
I miss my neon at times. She treated me well and taught me a lot about cars in general. I will always have a special place in my heart for these cars. Heres to the 2gn community.
- hansken_yo
- 2GN Veteran
- Posts: 5148
- Joined: Wed Oct 11, 2006 10:54 am
- Location: Washington
that happened alot on my 1st gen. and they adjusted the IAC, or replaced the sensor.
usually I'd just tap the gas, rev it a little more and it would drop right on back down to where it is suppose to be
usually I'd just tap the gas, rev it a little more and it would drop right on back down to where it is suppose to be

| - John || Project Log || Official I'm Going To Drive My Neon Till It Dies Club #000001 |
Everyone knows that for breasts to be "perfect" they need to be within reach.
Don' t ignor the obvious. Also check the mechanical linkage on the throttle cable.

'02 Dodge ES, Stone White, MTX, '01 Magnum swap, ACR sways, Tokiko blues, Mopar
2GN lowering springs, Comp 200 cam, PT Cruiser clutch, bolt-ons.
'02 Plymouth ES, Stone White, ATX, free project.
'00 Chrysler LE. ATX (Fiancee's) stock. '02 engine from above car. Mopar springs, Tokiko Blues.
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white2000neon
- 2GN Member
- Posts: 386
- Joined: Sun Mar 05, 2006 1:43 pm
- Location: Bensalem, Pa
- Contact:
We dont have MAFs (mass airflow) we have MAP (manifold absolute pressure) or somewhere on the lines of that. I would check vacuum lines even when i had a microscopic hole in my vacuum line it idled high. Or it could be the IAC like everyone else said.
2003 SRT 4
Forward Motion E1 Turbo
Devil Own W/I with Progressive Controller
Kinetic Wastegate
MPx 3" Exhaust
MPx Intercooler
AGP Cold Air Intake
Stage 2 Injectors
Stage 3 ECU
Walbro 255lph Fuel Pump
180* Thermostat
AEM Wideband
Aeroforce Scanguage
DCR Oil Mod
PTP Check Valve
Exhaust Depot Hardpipes
Greddy Type RS BOV
Turbo Timer
Forward Motion E1 Turbo
Devil Own W/I with Progressive Controller
Kinetic Wastegate
MPx 3" Exhaust
MPx Intercooler
AGP Cold Air Intake
Stage 2 Injectors
Stage 3 ECU
Walbro 255lph Fuel Pump
180* Thermostat
AEM Wideband
Aeroforce Scanguage
DCR Oil Mod
PTP Check Valve
Exhaust Depot Hardpipes
Greddy Type RS BOV
Turbo Timer
