Thoughts and Advice

The Oily Bits S2 Specific Topics
1

I have noted the last few outings that the car wants to (and has) stall.

Most notable:
Very hot day last year, car in sun all day. Started and left running while I talked to someone. Stalled twice when pulling away and needed more revs to pull away.
Long motorway run, came off at a junction and slowing to stop, the revs dropped quickly and I had to blip the throttle to hold it from stalling.
Last week I went to Supercar Fest. When driving the car seems fine but when in a traffic queue it occasionally wants to stall, revs dropping low and I have to hold it with some revs.

Other times it seems fine, drops to a tick over as normal but quite a few times I need to hold it from dipping too low with revs.
Have also noted it occasionally seems to want more revs to pull away from a stand still.

I changed the battery before Supercar Fest hoping this would cure the problem, it hasn’t.
Next week as part of it’s service I will change the plugs (4yrs old).

I have some throttle body/carb cleaner. I’m thinking of cleaning the TB this weekend - saturate a clean cloth and wipe it round.
Will be checking the intake for air leaks.

Anything else you guys could suggest?

2

You’re on the right track, just need to rule everything out as you go because it could be any one of fuelling, electrics or air/vacuum.

I had this issue for ages on my Exige when it was totally standard, and part of the reason for going down the aftermarket ECU route was to eliminate it. I eventually did after going EMU black and new injectors to run more power.

Some years later I return the car to standard and sell it on, new owner gets the original injectors tested and finds that one is just vomiting fuel out. Replaced them, and car runs a treat - no more stalls and he reckons it pulls harder than ever before.

Do the inexpensive/service items for now like plugs, clean TB/MAF etc. Give the coils an inspection because they can degrade and crack over time.

If you have an option to get injectors cleaned/tested locally, probably worth a go if you’re still struggling.

2 Likes
3

MAF is a good shout to clean as well and I’ll check the coils.

I did a Google and found someone in the States with the same problems, cleaning the TB cured it. The butterfly valve was showing some dirt, causing the problems.