Cold Start Rough Idle

916MKIIIx2 · 05-23-2011, 05:55 PM

Bump... No ideas?

chezpo0f · 05-23-2011, 07:42 PM

Just throwing out ideas here i'm no expert but...

As for the cold starting, have you checked the cold start injector?

Also, the miss every great while... Is that a full miss or just a lil bump, my celica and supra both always kinda bump a lil bit while idling not really a miss tho.

916MKIIIx2 · 05-23-2011, 08:24 PM

Feels like a complete miss every once in awhile, it has no real rhythm but I can definitely feel a miss in the exhaust pipe pressure, I have not checked the cold start injector. Any idea on the average life of this part? I pretty much have been slowling replacing everything in an effort to do a complete restore when it hit 100k miles last month.

Also another thing that I did read about is the HAC sensor, anyone know if that component failed would it cause my issues?

chezpo0f · 05-23-2011, 08:37 PM

If you're doing a full restore piece by piece anyway. You may want to go ahead and do the fuel filter next... And if you can do it all at once, go ahead and do the fuel pump while your at it. I've seen a clogged fuel filter cause that kind of thing before... not on a supra, but, same principle. I'm going to do that on mine as soon as I get it turning over again =p

916MKIIIx2 · 05-23-2011, 08:40 PM

Yeah for 25 bucks I can go get an upgraded TRD fuel filter from the corner, might as well do it now.

Saving for a better fuel pump... so for now I can definitely throw the 25 at the filter.

chezpo0f · 05-23-2011, 08:42 PM

Cool, let us know if that works out I'll cross my fingers for ya.

05-23-2011, 07:42 PM	#2
chezpo0f Stock Join Date: May 2011 Location: Mississippi Posts: 8	Just throwing out ideas here i'm no expert but... As for the cold starting, have you checked the cold start injector? Also, the miss every great while... Is that a full miss or just a lil bump, my celica and supra both always kinda bump a lil bit while idling not really a miss tho. __________________ 1990 Mk3 Supra completely stock 1985 Celica GT stock minus .20 over-sized pistons

05-23-2011, 08:24 PM	#3
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	Feels like a complete miss every once in awhile, it has no real rhythm but I can definitely feel a miss in the exhaust pipe pressure, I have not checked the cold start injector. Any idea on the average life of this part? I pretty much have been slowling replacing everything in an effort to do a complete restore when it hit 100k miles last month. Also another thing that I did read about is the HAC sensor, anyone know if that component failed would it cause my issues? Last edited by 916MKIIIx2; 05-23-2011 at 08:38 PM.

05-23-2011, 08:37 PM	#4
chezpo0f Stock Join Date: May 2011 Location: Mississippi Posts: 8	If you're doing a full restore piece by piece anyway. You may want to go ahead and do the fuel filter next... And if you can do it all at once, go ahead and do the fuel pump while your at it. I've seen a clogged fuel filter cause that kind of thing before... not on a supra, but, same principle. I'm going to do that on mine as soon as I get it turning over again =p __________________ 1990 Mk3 Supra completely stock 1985 Celica GT stock minus .20 over-sized pistons

05-23-2011, 08:42 PM	#6
chezpo0f Stock Join Date: May 2011 Location: Mississippi Posts: 8	Cool, let us know if that works out I'll cross my fingers for ya. __________________ 1990 Mk3 Supra completely stock 1985 Celica GT stock minus .20 over-sized pistons

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05-23-2011, 05:55 PM	#1
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	Bump... No ideas?

05-23-2011, 08:40 PM	#5
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	Yeah for 25 bucks I can go get an upgraded TRD fuel filter from the corner, might as well do it now. Saving for a better fuel pump... so for now I can definitely throw the 25 at the filter.