Hesitation and "coughing" around 2400rpm

[jonster]

For the slight hesitation problem I have - it goes away when using the stock ECU. This of course doesn't provide anything like the torque the mapped KPRo does. I've found a bit of a large jump in cam on my map at the low revs so I'll try and smooth this out and see if it makes a difference.

 

[jay82]

i had the same problem with my RS, felt like the engine was about to cut out just for a few seconds and then she'll go again. changed loads of sensors in the engine turned out to be the fuel pump was knackered

At the same revs every time or randomly?

same revs every time 3500rpm. once i got a new pump it was fine. but i was getting dirty petrol from some where cause i change the filter 6 months before the pump went and the dirt that was in the filter was shocking :shock:

 

[lockwood77]

How bizarre, you'd have thought a failing fuel pump would be intermittent regardless of revs!

 

[Project]

nope not the case, mine did the same thing at the same revs and found it was my fuel pump that had gone/was going

 

[lockwood77]

OK, I think it's being investigated as a possible cause anyway.

 

[kingston]

any news?

 

[macer]

Do ya know if you can edit your map yet?

 

[Crazylegs]

Mine has started doing this today all of a sudden, mainly in second gear. The exhaust and induction note has increased slightly too.

Getting pissed off with this car now tbh, it's been nothing but expense since I've had it. :-(

 

[frampo]

check this thread i started earlier with a similar problem:

http://www.itr-dc5.com/forum/index.php?/topic/34327-hesitation-over-fueling-and-cel-code-45-fuel-system-too-richlean/

 

[Crazylegs]

Thanks mate,

So what was the problem with yours in the end or was it a multitude of things?

 

[frampo]

Thanks mate,

So what was the problem with yours in the end or was it a multitude of things?

i havent diagnosed mine yet still looking into it, will be trying fully working coil packs and injectors tomorrow, hopefully this solves the problem, however i have looked online for this problem and no one really seems to know much about it, some say 02 sensor, some say injectors, im just going to keep trying things till i locate the problem.

 

[Crazylegs]

I'm hoping it's not anything major and that it's something simple like plugs which will be getting changed next month. Just seem to be having niggly little issues with this car as well as having to fork out £200 odd for new tyres which I wasn't expecting to have to do considering I've only had it for 4 months if that.

If I keep having problems with it I'm tempted to fuck it off new year and get something else. I never had any problems like this with my CRX VTEC and that was a 21 year old car.

 

[AP-Performance]

I'm pretty sure it is a mapping issue, i've fixed this issue for customer's who were tuned elsewhere previously