Idle problem

da_woo · Post by **da_woo** » Thu Dec 21, 2006 6:49 am

Hey Guys i have had this problem for about 1 month now and trying to eliminate the problems and wondering if any of you guys have had the same problem and know a soloution. Mainly when the car is cold (first start) the car has rapid loss of revs, causing a knocking sound when you try to accelerate and no power.My usuall fix is to highly rev the car and try maintain high revs for first few seconds and if still constant power loss re-start the car and have a 2nd attempt

It is a 98 Daewoo lanos 1.5 SOHC.It has 120G's on the clock. I have just done the timing belt, head gasket. In terms of finding a soloution i replaced the Coil/distributor pack, new leads,new plugs.A full oil service, re-installed my original air intake system including resonator. The problem seemed to be getting better but now it is back to "shit" again. The car seems to also be running rich as im only getting 400 - 450 km's to a full tank.

I thought it may be ECU related as from memory it started happening not long after i installed a tacho.

any help would be appreciated

Michael (da_woo)

Daniel · Post by **Daniel** » Thu Dec 21, 2006 8:12 am

Yet tried to remove the tacho?

Daniel

da_woo · Post by **da_woo** » Thu Dec 21, 2006 11:10 am

I thought that but wanted to try work out why it would be causing it before i did so and if anyone has had the same sort of problem:P thanks for the advice though:P

MMamdouh · Post by **MMamdouh** » Thu Dec 21, 2006 1:24 pm

leaky injectors?

MMamdouh

myidisbetter · Post by **myidisbetter** » Thu Dec 21, 2006 7:38 pm

Its most likely your THC, its what broke on my car and sometimes it would rev up to 6000 rpms for no reason and sometimes it would rev so low my car would almost die. But im pretty sure this is what you need. It,s not that expensive, and I don't think its that hard to replace.

NubiraDellwoo · Post by **NubiraDellwoo** » Thu Dec 21, 2006 8:39 pm

myidisbetter wrote:Its most likely your THC, its what broke on my car and sometimes it would rev up to 6000 rpms for no reason and sometimes it would rev so low my car would almost die. But im pretty sure this is what you need. It,s not that expensive, and I don't think its that hard to replace.

What's THC... ?.. It's not on the list...

I'm such a noob...

TAC Thermostatic Air Cleaner
TB Throttle Body
TBI Injection system where the injectors are mounted above the butterflies
TCC Torque Converter Clutch
TCM Transmission Control Module
TDC Top Dead Center
TFT trans fluid temp
TH Turbo-Hydramatic
TPI Tuned Port Injection
TPS Throttle Position Sensor
TRC Throttle Return Control
TTS Trans Temp Sensor
TV Throttle Valve
TVS Thermal Vacuum Switch

MMamdouh

MMamdouh · Post by **MMamdouh** » Fri Dec 22, 2006 12:21 am

THC????????

MMamdouh

lanowoo · Post by **lanowoo** » Fri Dec 22, 2006 6:37 am

throttle positon sensor maybe?

myidisbetter · Post by **myidisbetter** » Fri Dec 22, 2006 4:21 pm

Oops sorry, I did mean the TPS, I don't know why i said that. Mine was only like $64, but it might even be cheaper because the guy ripped me off like 200 dolllars

NubiraDellwoo · Post by **NubiraDellwoo** » Fri Dec 22, 2006 4:38 pm

myidisbetter wrote:Oops sorry, I did mean the TPS, I don't know why i said that. Mine was only like $64, but it might even be cheaper because the guy ripped me off like 200 dolllars

Good... Well now I feel less noobish...

he he

I was looking everywhere in my Woo bible and could not find that

MMamdouh · Post by **MMamdouh** » Sat Dec 23, 2006 1:37 am

it is highly unlikly that this is a TPS issue, bad TPS would make the car idle too high or make revs go back and forth between 1000 and 2000 RPMs or so.

MMamdouh

TxDAEWOOxT · Post by **TxDAEWOOxT** » Sat Dec 23, 2006 3:52 am

Im haveing a ideling problem also with my Lanos. Both of my oxygen sensors are out. I am hoping
that will solve my problem.

When i lost my 2nd sensor my catalytic converter broke the welds around
the flange. My exhaust was just hanging and it was grinding on the secondary O2.

It did not idel high right after that so i dont know if that is why. Maybe 2 months after that it started
to idel at about 2100 RPM.

It doesnt always do it but when i does it is bad.

woodae · Post by **woodae** » Sat Jan 06, 2007 5:05 pm

i Have the same problem. sometimes my car revs high and when i am driving sometimes i can coast and the high idle will move me along, I found it funny at first! cruise control baby. if i shut the car off and turn it back on t will run fine.
i replaced both oxygen sensors i also installed a tach tooo.

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Idle problem

Idle problem

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