Randomly going lean when cruising

[Weyro]

When cruising along with constant throttle position, the car will go from 14.5 afr to full lean.

If I keep the throttle the same it slowly goes back to normal. If I lift off it goes back to normal. If I floor it, it bogs for a second then goes back to normal.

[Jhandy]

Sounds to me you got a injector failing dude

[Weyro]

was thinking either that or fuel pump, might take them out and give them a good clean

[A L 3 X]

My afr hits full lean when cruising on closed throttle but that's normal

Never had it go lean on partial throttle though, sometimes full boost at partial throttle it goes quite rich but not fully lean mate

[Weyro]

My car has never went full lean when i lift off, its weird.

Ive seen videos of other cars widebands and when they lift off and go on the over run its full lean, mine only goes to about 16 at first then goes to 13.

Car is perfect when putting the fut down and at WOT.

[A L 3 X]

What management u got and what's it doing at wot?

Sounds weird that it doesn't go full lean, what you measuring the afr with mate?

What management u got and what's it doing at wot?

Sounds weird that it doesn't go full lean, what you measuring the afr with mate?

[Weyro]

Standard ECU, rrFPR, HKS fcd, AEM UEGO wideband

At WOT its perfect, as soon as boost picks up it goes to 11.4 and stays there till redline.

[funny onion]

You could Try setting up your TPS with a multimeter?

[Weyro]

Yea i set it up when i got the car, because it wasnt detecting light throttle input.

Ill maybe try it again, might have accidentally went too far the other way.

[funny onion]

Yea i set it up when i got the car, because it wasnt detecting light throttle input.

Ill maybe try it again, might have accidentally went too far the other way.

When the engine was out if mine a few months ago I put a new inlet on and set up the new TPS once it was running. Checked it recently and it was way out. Just a possibility

[Weyro]

Ok ill give it a check, cheers

[Weyro]

Feel like a right idiot.

Got all the stuff out to check the TPS settings, went out to the car, TPS wasnt even connected! That means ive been running with no TPS for over 6 months.

Gave everything a good clean, as there was lots of shite in the connectors, and plugged it back in.

Going to go a run later to see if its made a difference

Cheers Charlotte, if you hadnt mentioned it id never have noticed!

[funny onion]

Feel like a right idiot.

Got all the stuff out to check the TPS settings, went out to the car, TPS wasnt even connected! That means ive been running with no TPS for over 6 months.

Gave everything a good clean, as there was lots of shite in the connectors, and plugged it back in.

Going to go a run later to see if its made a difference

Cheers Charlotte, if you hadnt mentioned it id never have noticed!

No worries! There's a good chance that there will be an improvement with it plugged in that's for sure haha

[A L 3 X]

Weyro I wish mine was like that, jam ecu and it fluctuates at full boost, spose that's it doing what it's meant to though

[Weyro]

Car runs perfect now, full lean when lifting off as it should.

Well Alex im open to a straight swap if you would like haha

[funny onion]

Car runs perfect now, full lean when lifting off as it should.

Glad to hear it