Engine Light Coming On After Heaters Have Been On

[gogglez-10]

so after Havin my stag for a couple days and after i have had my heaters on for a while the engine light comes on and the motor starts to miss anyone experienced this?

[PN-Mad]

C34 or M35?

[gogglez-10]

c34 rs4

[Springsteen]

Not convinced the heater is causing your problem, just a likely coincidence. If you can give it a boot on the throttle and it comes good and you have about 100xxx km on the clock then guess what....my first guess is coils. If youre not convinced then put the ecu into diagnostic mode and count the flashes, or pay for a consult to say you have an intermittent ignition problem and be none the wiser.

[gogglez-10]

Yeah did think about that could the afm being shit cause this the cars at 94000 but when i turn the car off and start it again the light goes off and drives fine

[C34S2STAG]

Coil packs for sure time to get your wallet out!

[gogglez-10]

i think it was shit fuel haven't had it since i have run 2 full tanks of premium through it but coils are on the list when i do my 100,000 service

[loymclure]

if you wanna test it.... supa cheap will sell you a tube of heat silicone for like 20 bucks, pull them out and cover each coil pack in it. mine use to heat up and then arc out against the block. if you have the cash buy new ones i guess.

[wolverine]

CRC urethane seal coat is a better and neater option than high temp silicone.

[loymclure]

hey wolverine, no disrespect bro but

CRC Urethane Seal Coat Temperature Resistance Should not exceed 100°C

most heat resistant silicones have a HR of around 300°C

Sure a spray might be neater but i dont think itll have half the insulating properties as a decent heat resistant silicone or heat resistant gasket sealer.

the bonus is you wont see it as its under the coil pack cover.

cheers

[wolverine]

No disrespect taken. It works and it will prove or disprove the theory of failing coils. New coils is the real fix but seal coat works fine on a number of cars over a reasonable period of time.

[Springsteen]

Yeah did think about that could the afm being shit cause this the cars at 94000 but when i turn the car off and start it again the light goes off and drives fine

i think it was shit fuel haven't had it since i have run 2 full tanks of premium through it but coils are on the list when i do my 100,000 service

AFM? Is more likely to cause poor running and stalling. Can of AFM cleaner from local auto parts shop about 20 bucks, take off AFM and squirt clean.

The light going off when you switch off and back on is normal.

Ttry giving it a big kick in the guts when its missing (in gear up to 5000 rpm or so). Might need 2 or 3 kicks but usually will make it run on 6 again.

Shit fuel? Only ever run 98. My favourite is Vortex from the yellow and red company with the scallop for a logo.

Coils and plugs? Well it's up to you on how deep your pockets are when you do timing belt, water pump, seals / gaskets, fluids at 100xxx km

Looking like an expensive service, add about 750 bucks to your parts budget.

Dont tell me, the problem has gone away cos you switched your heater off??

[gogglez-10]

got quoted 400 for new water pump and timing belt from my mechanic mate so only extra for coils and plugs which I'll do myself

[C34S2STAG]

Why not try the timing belt and water pump your self? It's really easy man! There is a how to on this site aswell. Save your self a lot and learn at the same time!

[gogglez-10]

i don't pay for labour cause i help the guy out so its always good having a perfectly set up work shop

[KiwiRS4T]

i don't pay for labour cause i help the guy out so its always good having a perfectly set up work shop

$400 is pretty cheap!

[Springsteen]

Splitfires @ $650 and plugs @ $100..... Water pump @ $250 and Belt @ $150....

Seals, Gaskets, Tensioners, Fluids, Filters

[gogglez-10]

you Guys don't run super sparks ran them on my 2j @16psi and never had issues?

[Springsteen]

Ran Super Sparks on a RSV, no dramas.

Other folks will say use the Yellow Jackets. I would say everyone has a preference.

Think there are some new supersparks for sale on here, just make a search in the for sale section.

Same for plugs, you can get a set for cheaper if you want to pull the top off every time you oil change.

Best of luck getting the parts and solving that miss.

[gogglez-10]

not goin to stinge out will be puttin proper plugs in cause it looks like a pain in the ass to be pullin the top off every 5000