 No pluse on FL injecter when car is warm, I can't seem to figure this out |
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| weird_looking_cactus |
 Mar 26 2004, 11:49 PM
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#1
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Cactus  Group: Members Posts: 225 Joined: 16-February 04 From: St, George UT Member No.: 1,660  |
Well I have had my car kinda running for 1 day now. I have been able to drive it up the street The car will stay going with no problems.. Then I will shut the car off and try to start it again. It turns over just fine but I can't get any pluse from the injectors. So I let the car sit for a few hours then it works fine I can even start it on the frist crank. Can someone help me trouble shoot this thanks. (IMG:style_emoticons/default/wavey.gif)
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| lapuwali |
Mar 27 2004, 12:35 PM
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
The head temp sensor is also called Temp Sensor II. It's screwed into the head, near cylinder No. 3. Another possibility might be the cold-start injector is stuck open, or isn't switching off. This is a completely separate system, using it's own temp sensor (called a thermo-time switch or just thermoswitch. If this is bad, it can either prevent cold starts or prevent hot ones, depending on how it fails. It's supposed to only energize the cold-start injector while the engine is cranking and only when the engine is actually cold (like below 90dF). If the cold-start injector is open for warm starts, it may be way too rich to allow starting.
Temp sensor 1 measures air temp, and it's much less likely to be a problem. Go to a Radio Shack or similar and get a handful of resistors. If you attach Temp Sensor II's wire to a 100-200ohm resistor (the exact value isn't important, just not too high or too low), and the other end of the resistor to ground, you're simulating a working CHT sensor with the engine hot. If the CHT sensor is your problem, the car will start when hot. Use a 1500-3000ohm resistor to simulate a working CHT sensor when the engine is cold. A resistor assortment is cheap, and this is an easy way to test if this sensor is the problem. Clean every connection you can find. Bad connections are the source of 90% of electrical problems. |
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Posts in this topic
weird_looking_cactus No pluse on FL injecter when car is warm Mar 26 2004, 11:49 PM
SLITS Thermal breakdown of those old german microchips (... Mar 27 2004, 12:32 AM Gint You have rust in the bottom of your fuel tank, you... Mar 27 2004, 01:09 AM JOHNMAN Since others are doing it, I must chime in.....
H... Mar 27 2004, 03:12 AM Racer Chris I repaired a car that had an intermittent problem ... Mar 27 2004, 05:17 AM Bleyseng Chris, you need to test the MPS with a vacuum pump... Mar 27 2004, 06:23 AM Demick Here's my guess.
Head temperature sensor is m... Mar 27 2004, 09:28 AM Bleyseng It should kinda fire when warm thou even if its ri... Mar 27 2004, 09:31 AM rhodyguy he doesn't mean stick your nose up the tail pi... Mar 27 2004, 09:37 AM Bleyseng If it was I doubt that it would start and run well... Mar 27 2004, 09:58 AM weird_looking_cactus Im thinking its my head temperature sensor. Cause ... Mar 27 2004, 10:18 AM weird_looking_cactus This is sucks my car started right up today. I too... Mar 27 2004, 11:55 AM weird_looking_cactus I think I just found my problem I unpluged the the... Mar 27 2004, 01:28 PM
Lawrence Cactus (I can't call you wierd and I don't... Mar 29 2004, 12:20 AM |
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