I had a little but of an impromptu day off work today, so i thought i would try and sort the hesitation out on my car between 2-3k.

So the jobs to do were clean the Solenoid and Clean the MAF as well.

Baring in mind the car when you changed gear it would rev up when you dropped the clutch and was little lumpy and jerky at times as well

So i popped to halfrauds and bought some Carb cleaner and electrical contact cleaner too... plus a new air freshener for my troubles :-) I also bought some engine degreaser (which i need some help with but thats for a different thread)


So took the solenoid off, connected the green connectors under the dash and cracked on spraying carb cleaner into it, it came out the other side just as clean as it went it tbh... but it had a bit of a clean anyway i guess....

So onto the MAF took it out and got cracking cleaning that. I couldnt believe how dirty it was, when i say it was caked in filth it really was properly caked, ended up going through almost half a can of spray getting all off the gunk off the contacts and wires.

So left it to dry for an hour or so and reinstalled it. Took the negative off the battery as well to reset the ECU.

Fired her up and she immediately sounded so much smoother on tickeover. Let her warm up and went for a spin to test out my fine craftsmanship.....

Jesus wept, she drives like a totally different car. So much smoother, less like hitting a brick wall through the gears, no overrev when your drop the clutch and to top it off she appears to pick up a lot better on the low end

VERY VERY happy!

I think the guy that sold it to me noticed it was starting to run a little lumpy and changed the fuel filter and it didnt fix it so decided to get rid. £20 of spray and it now drives like a new motor, id say cleaning the MAF has solved 95% of the problems with the car that i was worried out... Shame i just cant clean my gearbox!

 

Good one !

I wonder how much Backstreet Bodger & Co would have charged for putting it right?

 

How did you clean the MAF? Scared of damaging it

 

just pour some electrical cleaned onto the maf sensor DONT be tempted to rub it with a cotten bud or alike. the temp bulb might be dirty to clean this the same way

 

Get the spray from halfords mate and just spray it on, cake it on and then leave 30 mins and repeat until metal is shiny again :-) just don't touch Anything lol

 

Make sure you leave it to dry out fully before you replace it as well mate pretty important that is!!

 

Ok cheers will get on to that, can i use a air dryer?

 

I didnt mate just let it dry naturally, i put mine in the shed with the radiator on and left it over and hour when i checked it twas dry as a bone :-)

 

Isn't yours a new age mate?

Mick

 

It is indeed mate blob 03 STI

 

Does it have a K&N air filter, heard that over oiling them causes the MAF to grot up

 

No but it is having one put in, when it arrives :-)

It looked like it hadnt been cleaned since the day it was bought.

 

I have carb cleaner in garage, or should i buy this?

http://www.ebay.co.uk/itm/Mass-Air-F...item19e40a8202

 

Go to halford and buy Electrical Componant Cleaner mate.

 

http://www.halfords.com/webapp/wcs/s...egoryId_255223

 

Same as mine mate, I spent time disconnecting my battery to reset ecu only to find out on here that it only works on classics lol.

To reset you're ecu you will need to use and obd2 diagnostic tool

Mick

 

Are you sure buddy?

As i had an issue with boost the other day, where it was only boosting to 8psi, did some research on it and it turns out that i did something the car didnt like... which i cant work out what, but whatever it was it didnt like it.

Turns out that it turned off the electronic boost and was just using the wasgate pressure? So negative off the batter reset the ECU and it was bang on when i hooked it back up was boosting back to 18-20psi again .

 

Positive mate aye, classics can reset via disconnecting battery, newage cars need diagnostic tool to reset.

Was told on here and then confirmed by a subaru specialist.

Mick

 

Bought Halfords brake and clutch cleaner to do my 03 WRX PPP MAF, car didn't feel too different but I did notice less pops and bangs on the overrun.

 

Did you make sure that the to wires were back to being nice and shiny rather than covered in filth?

I made this mistake, Spayed them though jobs a goodun went back to them 60 mins later to check on them to realise id not got all of the crap off them.