A Little Advice

[jonnyb80]

evening folks

i need a little advice on my98 uk turbo

ok here goes, i got an uprated furl pump yesterday and fitted it and all was fine filled it up with some v-power last nite all was running good,

then i had to take it out today all was fine till about 1pm had been out since 11am, then outta no where it has a loss of power and boost dropped from 12/14 psi down to think its hitting 6/8psi now

and not sure what is wrong with the car but the loss of power im just not sure what to do as dont really wanna try drive it over to a garage as there all miles away from and most of them i have hills to go up and i dont know if the car will make it there or not

cheers jonny

[scooby222]

was it a new fuel pump you fitted? if you havent had it mapped then possibly its overfuelling and the ecu's pulling the boost back? but those more knowledgeable than me should be along soon hope its an easy fix!

[jonnyb80]

did a bit of checking online and it seem to be the MAF so now looking for a new one but its proving hard as there all green or orange label and not purple that is on my car

[lewisscoob]

The first thing I would be doing is looking for a boost leak and cleaning out the boost solenoid. Check all the little vac hoses running between the boost solenoid, inlet manifold and turbo. Look for degradation and cracking. Then give the boost solenoid a good cleanout with brake/clutch cleaner. I'd be doing this first as its cheaper than instantly replacing a MAF that may or may not solve the problem.

Are there any other reasons to the above that you think that it may be MAF related?

As far as i'm aware, a fuel pump change doesnt require a map tweak as its generally only changed to ensure a reliable fuel source in case remapping for other mods. Its more of an insurance/reliability issue really as flow is controlled by injector size and fuel pressure regulator. All my thinking - i'm no expert.

[jonnyb80]

The first thing I would be doing is looking for a boost leak and cleaning out the boost solenoid. Check all the little vac hoses running between the boost solenoid, inlet manifold and turbo. Look for degradation and cracking. Then give the boost solenoid a good cleanout with brake/clutch cleaner. I'd be doing this first as its cheaper than instantly replacing a MAF that may or may not solve the problem.

Are there any other reasons to the above that you think that it may be MAF related?

As far as i'm aware, a fuel pump change doesnt require a map tweak as its generally only changed to ensure a reliable fuel source in case remapping for other mods. Its more of an insurance/reliability issue really as flow is controlled by injector size and fuel pressure regulator. All my thinking - i'm no expert.

i plugged in the black wires under the dash and it brung up code 23 2 long flash and 3 short flash's of the engine check light and with the codes i found online its coming up with the MAF

[baldobaz]

You can clean the element in the maf, sometimes these get bunged up with carbon, my 04 did te same thing a few weeks ago, i took it to duncan at hypertech at bonnybridge, cleaned the maf and put a new fuel filter on and it was back to normal.

[lewisscoob]

Oh, well you never mentioned code 23 before

Make sure you also check the wiring and terminals for the MAF. Code 23 is for MAF and it's circuitry.

[jonnyb80]

sorry was in a rush when i posted that and a bit pee'd off lol

picked up a 2nd hand one from a breakers and fitted it and all seems fine again

[colin_ross]

Did you disconnect the battery before fitting the pump? If so will more than likely have reset the ecu which has now diagnosed the failed maf.

Borrow one from another 98, reset the ecu again and take it for a spin before buying one to make sure.