cold start injector

SlimJim248@earthlink · 06-28-2005, 02:31 PM

My 4runner (85 22re) has always had a little iratic idle, and according to the factory toyota manual the cold start injector can influence this. My manual says 2-4 ohms is the range; however I am getting infinity when I check it with my ohm meter and no, the multimeter prongs are not touching. Does this mean a short inside the injector? is it time for replacement? thanks in advance.

This ad is not displayed to registered members.
Register your free account today and become a member on Yotatech!

84sr5yoty · 06-29-2005, 12:42 AM

If you're getting an infinite reading and the meter is set to the correct scale, then yes, the the internal wiring in the injector is open. Make sure you're on the correct ohm scale. I know several people replacing perfectly good parts because they were on the wrong scale. A non functioning cold start injector will cause hard starting and several seconds of cranking with a rough idle for 30 seconds or so. If your rig fires right up when cold, then the cold start injector is most likely functioning properly.

trd6209 · 06-29-2005, 08:39 PM

I had a similar experience with my 3.0 V6. I chased my tail for a few weeks and then I finally took it in to a garage. I came back a few hours later and they told me that they changed my throttle body gasket and everything purred like a kitten. Well, when poking around under my hood the following weekend, I noticed that the cold start injector connector was hanging loose. I cut the hell out of myself to get it plugged back in and as soon as I did, my idle was all out of whack. I disconnected it and she purred like a kitten. I live in Arizona, so I never found a reason to reconnect the thing. I realize that it's a totally different motor, but it is entirely possible that you are experiencing the same type of thing. Hope that this helps

AgRunner06 · 06-29-2005, 08:58 PM

Hmm I may have to look at mine.

06-29-2005, 08:39 PM	#3 (permalink)
trd6209 Contributing Member Join Date: Jun 2004 Location: Tucson, AZ Posts: 56	I had a similar experience with my 3.0 V6. I chased my tail for a few weeks and then I finally took it in to a garage. I came back a few hours later and they told me that they changed my throttle body gasket and everything purred like a kitten. Well, when poking around under my hood the following weekend, I noticed that the cold start injector connector was hanging loose. I cut the hell out of myself to get it plugged back in and as soon as I did, my idle was all out of whack. I disconnected it and she purred like a kitten. I live in Arizona, so I never found a reason to reconnect the thing. I realize that it's a totally different motor, but it is entirely possible that you are experiencing the same type of thing. Hope that this helps __________________ 2005 4Runner SR5 Sport Clean configuration 1992 Toyota SR5 3.0 V6 149,000 Miles MODS: Downey Ceramic Headers Downey High Performance Exhaust Downey Heavy Duty 1.5 in. springs Air Box Mod K&N FILTER ISR Mod Future Plans: ARB Bull Bar Rear Coil Spacers/Front Ball Joint Spacers 33X12.50R15 Rancho RS9000s

06-29-2005, 08:58 PM	#4 (permalink)
AgRunner06 Contributing Member Join Date: Dec 2002 Location: The Lone Star State Posts: 2,418	Hmm I may have to look at mine. __________________ "I'm your huckleberry." - Doc Holiday - '93 4runner - Sold! Current Ride - 2001 Chevrolet Silverado 1500 ext.cab, pewter, 5.3L, 3.42s, fully loaded, 68K miles. FREE ROCKET!!!!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Cold Start Injector	4x4countrygirl	86-95 Trucks & 4Runners	14	02-16-2007 05:34 PM
cold start injector	ELD	86-95 Trucks & 4Runners	9	01-07-2007 11:32 PM
i need a cold start injector	89macrunner	95.5-2004 Tacomas & 96-2002 4Runners	3	07-07-2005 06:48 PM
Cold Start Injector?	86 TurboSR5	95.5-2004 Tacomas & 96-2002 4Runners	0	07-22-2004 07:34 AM
cold start injector?	grafix43	95.5-2004 Tacomas & 96-2002 4Runners	8	02-19-2004 08:27 PM

06-29-2005, 12:42 AM	#2 (permalink)
84sr5yoty Registered User Join Date: Jan 2005 Location: Pleasanton Ca Posts: 677	If you're getting an infinite reading and the meter is set to the correct scale, then yes, the the internal wiring in the injector is open. Make sure you're on the correct ohm scale. I know several people replacing perfectly good parts because they were on the wrong scale. A non functioning cold start injector will cause hard starting and several seconds of cranking with a rough idle for 30 seconds or so. If your rig fires right up when cold, then the cold start injector is most likely functioning properly.