Trouble starting in frosty weather!
10-23-2015, 05:55 PM
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Trouble starting in frosty weather!
Yoo, I've got a 93 sr5 3.0 3vze, weather here is starting to turn frosty and went to start the old girl up and was being stubborn, she was turning over no problem but just didn't want to fire right away. After a few minutes trying she finally grabbed and slowly got the rpms to a steady normal idle. Any ideas what I'm facing? Fuel delivery issues? Pump or filter?
10-23-2015, 06:39 PM
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I do things in order; easy stuff first. Check the timing. If the timing is good, put the timing light on each plug wire to confirm they're firing regularly. Next, pull the connector off the cold start injector. Make a difference? If not, there's a whole chain of events that turns on the CSI, and frosty weather is where you might need it.
(It's getting frosty here, too. The other day it was down to 57°F! Brrr!)
(It's getting frosty here, too. The other day it was down to 57°F! Brrr!)
11-03-2015, 08:07 AM
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I have yet to have a Cold Start Injector to fail but the Timing Switch that controls the injector has failed on me several times. A few times the Timing Switch just need the hard water build up cleaned on it to get it to working. I just use a brass tooth brush to clean the Timing Switch.
11-03-2015, 10:18 AM
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I have yet to have a Cold Start Injector to fail but the Timing Switch that controls the injector has failed on me several times. A few times the Timing Switch just need the hard water build up cleaned on it to get it to working. I just use a brass tooth brush to clean the Timing Switch.
One cold morning in Sacramento, truck took a long time to start. Then, once, I parked briefly and when I got back to truck after around 10 minutes, it had trouble starting again. Found that connector on CSI was not seated right. Reseated it and problem had not recurred.
I also found the CSI timer switch has epoxy/mold that's loose. Got replacement from Chefyota but had not installed that, yet.
11-03-2015, 03:00 PM
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Ok I will check all the connections, sorry for the delay in replying. If it wAs the cold start injector what would I be looking for? I'm not a mechanic and trying to learn as I go! I've been reading and asking and It adds more fuel for cold start up, if I keep the rpms up for about 10 seconds it seems alright to idle, but if I try to drive it doesn't want to stay running when I try to go unless I have the rpms cranked (couple late mornings for work didn't have time to let it warm up) it won't go to far. So my question being, "what does a bad cold start injector 'look like'" thanks a million
Last edited by Terrys87; 11-03-2015 at 03:12 PM. Reason: Language
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11-03-2015, 04:30 PM
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Your ECM will adjust the timing and the injector open-time when it's cold to help it run smoothly. So my first guess (as above) is your timing is off; not enough to matter when it's warm, but when you need it to run in the cold it's not close enough (this isn't REAL likely, but it's so easy to check there's no reason to start with something harder). More likely, you have a problem with the ECT (engine coolant temperature) circuit. Use your multimeter and check it out: http://web.archive.org/web/201003261...98engineco.pdf
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