ramzesgd

Hi,

so I got problem. Let me describe it. Car was standing 3 months without driving, basicly it had one drive, but during this was flodded. It was standing 1,5 months flodded. Finally I had chance to start it - it works. But... from this moment car got problem with stalling. Every time when its warmed up it just not holding rpm's on neutral. Acceleration is also diffrent - from 1st gear the felling is like starting from 3rd. After that is ok, until 4000rpm - then is some kind of parachute, and again after is ok, until 6000 - again parachute. Basicly it doesnt have so much power like before.
Ive read couple of topics here and I was thinking about ignition coils - Ive change them and problem is still exists - just the throttle felling is better, but car is still shutting down after warming up and it doesnt want to hold rpm's. Rpm are jumping when car is cold.

Plugs ? Wires ? Fuel pump ?

Help me

nycgps

iTrader: (1)

did You pull ur battery ?

if u did, thats what happen. let it re-learn.

04RX8man

yeah NYC is correct about the battery if not I'm not completely sure no smoke? and run perfect till it gets warm?

ramzesgd

Yes, I pull out battery when I was changing coils. After that that but before starting engine, Ive pressed brake 20times to reset computer once again... is still stalling on low rpms

04RX8man

it possibly could still be relearning but possibly an engine problem? bad gas possibly? did you put any fuel stabilizer in it or are you running cheap gas?

nycgps

iTrader: (1)

It takes about 3-5 drive cycle to complete the re-learn cycle.

So just live with it for a while, it will idle back to normal after that(unless u have serious engine problem)

Socket7

The computer relearning curves should not cause stalls at idle. If you have not changed the plugs and wires since it was flooded, this would be my first course of action. after being left flooded for a month and a half I'd be shocked if the plugs weren't completely fouled

nycgps

iTrader: (1)

it will cause it to stall, most modern cars are like that, manual transmission cars.

its not like cause stalls at idle, its not even holding @ idle. rpm just drops. since the computer doesnt know the right amount of throttle yet.

Socket7

I have reset my ECU by the 20 brake pump method, and the battery disconnect method. Many times. My car has never stalled because of it.

Any modern car it should never stall, unless because of driver error or mechanical failure.

nycgps

iTrader: (1)

when I asked the guy at a garage, he said most modern car would stall if u pull the battery. ECU re-learning. nothing to worry about.

The service manual didnt say anything about stalling, but it did say something about re-learning. so...

whatevaz, idle works after a while. no big deal.

ramzesgd

Guys I dun think ECU is learning. I pull out battery cabel many times - and this issue got nothing to do with this.
Car is stalling, rpms are not stabil, there is lost of power. 40K miles on the clock.

Socket7

Change your spark plugs and plug wires. Plugs will foul if the engine is left flooded. I'd say check the cat as well, but that would only cause problems at high RPMs; Also, you are running without one.

puch96

It could also be a TPS problem... (throttle position sensor)

ramzesgd

New info: i notice that from stalling problem I can smell petrol in the air, before it was just smog. Anyone know smthg?

Socket7

How can I know anything if you don't respond to previous answers?

Have you changed the plugs yet?

invasion08

iTrader: (7)

Pushing the brake 20 times does not reset the ecu it resets the e-shaft

Charles R. Hill

iTrader: (7)

Make sure you reconnected your MAF sensor.

alz0rz

iTrader: (41)

Vacuum leak?

Charles R. Hill

iTrader: (7)

Good point, alz. If it is, it would probably be from the VFAD vacuum supply hose being disconnected after the coil swap(IIRC).

Deathcraft

I pulled the battery out a few times in the past to clean...it never really caused stalling or rpm fluctuation.....

ramzesgd

No I didnt change those plugs, they r still the same from the flooding. The only thing i've changed are the coils. I dont have cat. Just a resonated pipe.

ramzesgd

What you mean? Tell more... my MAF sensor is clean.

ramzesgd

I went to Mazda service, they read out codes and they still dont know what can it be . They are suggesting that it can be o2 sensor, after flooding, when I started car I probably melt it. Can this be truth? Car doesnt want to pass 4000rpm. The only happy nesws is that its not a engine

ramzesgd

Computer is showing now that the mixture is not rich enough? Could it be new intake? Maybe is giving to much air compare to poor level of fuel?

Anyone got some ideas ?

Guys, I know there is someone that know something... ? Maybe burned o2 sensor?

Charles R. Hill

iTrader: (7)

Damaged catalytic converter?