Car doesnt like to idle in the morning

XxSupra4LifexX · 12-18-2007, 04:42 AM

When i first start my car up in the morning after its been sitting all night the car doesnt like to idle. it will idle about 100rpm and sometimes it will even die. When i step on the gas i can hear the intake suck in air but the car doesnt rev up, in fact the car drops in idle. but once i put my car into gear and drive its fine. and once the car is warmed up it will be fine until the next morning. any ideas on what could be the cause of my problem?

west_side_supra · 12-18-2007, 08:22 AM

probably the cold start injector

XxSupra4LifexX · 12-18-2007, 08:28 AM

yeah thats what i was thinking i just wasn't 100% sure. are the cold start injectors the same from the turbo motor and the nonturbo motor?

west_side_supra · 12-18-2007, 08:29 AM

hell if i know lol i doubt it but you never know

XxSupra4LifexX · 12-18-2007, 08:36 AM

yeah because i have a complete turbo motor sitting in my friends garage. im taking it apart and putting better internals in it and all arp studs and bolts. but if they are the same i was just going to take the one off my turbo motor and throw it in. thanks for the help.

tsupra89 · 12-18-2007, 03:01 PM

brake booster, brake booster, brake booster. i have the same problem the car will crank and it will flucuate in revs and when you try to press the gas it like to die then rev up like 4 seconds later. i thought my cold start injector, which it still might be but i lost my brakes the other day and when i lost my brake my engine went weird reving slow reving high flucuating, and the brake booster was making weird sounds so look at the cold start injector or the brake booster.

Supra2NR · 12-18-2007, 03:51 PM

or it could also be a boost leak sumwhere

XxSupra4LifexX · 12-18-2007, 10:10 PM

Actually, i replaced the brake booster like 2 months ago. i still have all of my brakes, and it only happens in the morning. once the car is warmed up it idles. so i know its not my brake booster, and as for the boost leak, my car isnt turbo.

Supra2NR · 12-18-2007, 10:34 PM

a vacuum leak then lol

XxSupra4LifexX · 12-18-2007, 10:37 PM

yeah, i also thought about that. but wouldnt that cause the idle to fluctuate all the time and not just in the morning?

12-18-2007, 04:42 AM	#1
XxSupra4LifexX Stock Join Date: Dec 2007 Location: Lake Elsinore Posts: 15	Car doesnt like to idle in the morning When i first start my car up in the morning after its been sitting all night the car doesnt like to idle. it will idle about 100rpm and sometimes it will even die. When i step on the gas i can hear the intake suck in air but the car doesnt rev up, in fact the car drops in idle. but once i put my car into gear and drive its fine. and once the car is warmed up it will be fine until the next morning. any ideas on what could be the cause of my problem? __________________ 1986.5 MKIII(7MGE soon to be 7MGTE)

12-18-2007, 08:22 AM	#2
west_side_supra 12psi boost Join Date: Sep 2006 Location: Marysville Washington Posts: 353	probably the cold start injector __________________ 7MGTE - 500hp never dyno'd exhaust: 3inch pipes no cat/powerhouse manifold/garret gt47 18psi/HKS SS racing wastegate fidenza cam gears intake: PHR 4inch intake/K&N filter/3 inch intercooler/ pipeFMIC/greddy type R bov/ fuel: 550cc PTE/ walbro 255lp / Aeromotive adj pressure regulator transmission: Fidenza flywheel/ACT extreme kit electronics: map ecu 1 / HKS EVC 9 gauges:boost,EGT,oil temp & pressure/aem AFR

12-18-2007, 08:28 AM	#3
XxSupra4LifexX Stock Join Date: Dec 2007 Location: Lake Elsinore Posts: 15	yeah thats what i was thinking i just wasn't 100% sure. are the cold start injectors the same from the turbo motor and the nonturbo motor? __________________ 1986.5 MKIII(7MGE soon to be 7MGTE)

12-18-2007, 08:29 AM	#4
west_side_supra 12psi boost Join Date: Sep 2006 Location: Marysville Washington Posts: 353	hell if i know lol i doubt it but you never know __________________ 7MGTE - 500hp never dyno'd exhaust: 3inch pipes no cat/powerhouse manifold/garret gt47 18psi/HKS SS racing wastegate fidenza cam gears intake: PHR 4inch intake/K&N filter/3 inch intercooler/ pipeFMIC/greddy type R bov/ fuel: 550cc PTE/ walbro 255lp / Aeromotive adj pressure regulator transmission: Fidenza flywheel/ACT extreme kit electronics: map ecu 1 / HKS EVC 9 gauges:boost,EGT,oil temp & pressure/aem AFR

12-18-2007, 08:36 AM	#5
XxSupra4LifexX Stock Join Date: Dec 2007 Location: Lake Elsinore Posts: 15	yeah because i have a complete turbo motor sitting in my friends garage. im taking it apart and putting better internals in it and all arp studs and bolts. but if they are the same i was just going to take the one off my turbo motor and throw it in. thanks for the help. __________________ 1986.5 MKIII(7MGE soon to be 7MGTE)

12-18-2007, 03:01 PM	#6
tsupra89 3" Exhaust Join Date: Sep 2007 Location: asheville Posts: 71	brake booster, brake booster, brake booster. i have the same problem the car will crank and it will flucuate in revs and when you try to press the gas it like to die then rev up like 4 seconds later. i thought my cold start injector, which it still might be but i lost my brakes the other day and when i lost my brake my engine went weird reving slow reving high flucuating, and the brake booster was making weird sounds so look at the cold start injector or the brake booster. __________________ 89 Supra Boosted 11psi lexus afm k&n air system aeromotive fuel pressure regulator walboro fuel pump stage 3 weitght reduction koki style tail lights silver and black 2 tone paint Enkei rs7 17" 17.5lbs each hankook ventus hr2's 225/45/17 apc hood pins yellow fogs ----------------- Soon To be Megan racing seats, roll bar, either takata or sparco harnesses

12-18-2007, 03:51 PM	#7
Supra2NR 1000whp postwhore Join Date: Apr 2006 Location: Chi-Town Posts: 1,643	or it could also be a boost leak sumwhere __________________ http://www.myspace.com/supra_2nr Into Bikes now,, apparently the supra couldnt kill me, so my zx6 might lol

12-18-2007, 10:10 PM	#8
XxSupra4LifexX Stock Join Date: Dec 2007 Location: Lake Elsinore Posts: 15	Actually, i replaced the brake booster like 2 months ago. i still have all of my brakes, and it only happens in the morning. once the car is warmed up it idles. so i know its not my brake booster, and as for the boost leak, my car isnt turbo. __________________ 1986.5 MKIII(7MGE soon to be 7MGTE)

12-18-2007, 10:34 PM	#9
Supra2NR 1000whp postwhore Join Date: Apr 2006 Location: Chi-Town Posts: 1,643	a vacuum leak then lol __________________ http://www.myspace.com/supra_2nr Into Bikes now,, apparently the supra couldnt kill me, so my zx6 might lol

12-18-2007, 10:37 PM	#10
XxSupra4LifexX Stock Join Date: Dec 2007 Location: Lake Elsinore Posts: 15	yeah, i also thought about that. but wouldnt that cause the idle to fluctuate all the time and not just in the morning? __________________ 1986.5 MKIII(7MGE soon to be 7MGTE)

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