Prize for the person who correctly diagnoses my problem

General General Lotus Talk
1

So here are the symptoms:

  • Driving feels like a misfire
  • free revving doesn’t sound like its missing though
  • trying to keep at a steady speed car kangaroos
  • if under load / accelerating its ok ish
  • seems worse at slower speeds
  • ECU holds a “Pending” fault? Rich on Bank 1
  • Starts ok but seems to be struggling to tick over, sometimes stalls
  • It gradually got worse over a 30mile drive home just now

The car is a 2006 Exige S, 25k miles.

So a prize for the person who correctly diagnoses the problem :nerd:

If you need any more info / need me to try something else no problem

2

Injector ?

3

rear wing missing?

4

Air filter? MAF?

5

one coil pack fooked

6

pull the coil packs one at a time while running, if one doesn’t make it run much rougher compared to the others there is your problem.

T

7

Yup coil pack :clap:
what’s my prize?? :smiley:

8

I’d go with a fooked coil pack or spark plug

9

I’d go with leaking injector. If 'twere coil pack,you’d expect the problem to worsen under load, and be better under light load/idle, unless the thing was running on three the whole time. A stuck injector would make it stall out when idling, run like shite on light load but improve under load when the AFRs got more sensible.

10

I had similar sounding symptoms on a 911 which turned out to be the MAF sensor - having first changed 6 coil packs :slight_smile:

11

I gave up trying to work it out as there seemed so many possibilities, needs a specialist with the right diagnostics tools I think?

12

EFA :clap:

13

LOL :smiley:

14

Yep, the evidence is right there, just as i said earlier :unamused:

15

Right the car is sorted :sunglasses: Although there are no winners / prize giveaways. If I’m relaying this correctly inside the airbox were a number of bullet connectors and connection blocks, something to do with relocating the MAF following the conversion? Anyway there had been a certain amount of water ingress causing poor connections, shorting or whatever. Gav (Unit 4) has done away with all the connectors and soldered them properly. Apparently the car now runs sweet again :clap:

16

Good news Mark

17

Like I said then…

:clap: