Idle Problem

Altec55 · Postby **Altec55** » April 3rd, 2009, 7:34 am

Yea tuners,

2003 Mazda Familia Wagon
ZL 1.5L
5fwd (not conversion)

i had to change gearboxes cuz a bearing was bad and mechanic couldn't find the bearing here.

after the change i have a idle problem. foot off the clutch and in N, the rpm ranges between 1200 and 1500

press the clutch and it drops to normal 700ish

if u hold the brakes, after a while the rpm will slowly climb to a choonks about 1500 then it'll drop and go up drop and go up drop and go up.

any ideas?

GEAR_HEAD · Postby **GEAR_HEAD** » April 3rd, 2009, 9:01 am

one of ur air sensors may have been/ gotten disconnected.......maf/map sensor???

Altec55 · Postby **Altec55** » April 3rd, 2009, 9:43 am

it have a MAF, but its connected, will re-check it

possible it need cleaning? how to clean it?

DIESELTRINI · Postby **DIESELTRINI** » April 3rd, 2009, 9:53 am

Sounds like you have a vacuum leak. Check all the hoses going into the intake manifold. Also check the rubber/plastic intake hose between the airbox and throttlebody for cracks.

Altec55 · Postby **Altec55** » April 3rd, 2009, 10:35 am

dont have oem intake, changed to a CAI (kit designed for my car) but shorted it to a short ram cuz of flood and ting

will check the hoses as well and report back

Sky · Postby **Sky** » April 7th, 2009, 10:23 pm

Inshan wrote:Sounds like you have a vacuum leak. Check all the hoses going into the intake manifold. Also check the rubber/plastic intake hose between the airbox and throttlebody for cracks.

Added to this, spray the im gasket and tb gasket at idle with carb spray and if the rpm shoot up you have a vacum leak :lol: