Another No Start Thread *Please Help*
Ok guys, any help or ideas here would be greatly appreciated.....I have a 93 pickup with the 3.0. I live in Iowa, and as it started cooling down outside my truck became harder to start in the mornings. I thought it was fuel pump so that's where I started along w/ new filter and no change, since then I have done cold start injector & switch, plugs, wires, rotor, cap. MAF, ignitor, coil, ECU, fuel pressure regulator, new battery this summer, Engine coolant sensor, and circuit opening relay. Now that we are in winter, when I try starting the truck it just turns over and over and over.....However, if I pull start the truck it starts! Once it is pull started, I can shut it off and it will continue to start w/ the turn of the key. Next day, it won't start again.......Any ideas? I bought a block heater tonight, gonna try that tomorrow.
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By pull start, do you mean that you get the truck moving and pop the clutch? If it starts easily that way, I'd almost venture to say your starter is weak. Does it crank slowly with the starter? Check the condition of your battery to starter cable and your engine ground.
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Yes, that is what I mean. Litterally only have to pull it 5 ft and pop the clutch and fires right up. The starter doesn't really sound week, and the battery is new.
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If the connections between battery to ground and starter are all tight and corrosion free, first thing I would do is replace the plunger & 2 contacts in the starter. Only about ten bucks and pretty easy to do.
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Have you tried starting it using the
CLUTCH START CANCEL button? also i don't know if the neutral safety switch might cause such an issue... just thinking out of the box here... without doing much thinking. . Lol Maybe if it starts using the CLUTCH START CANCEL button, it would be indicative of something wrong with the NSS... just sayin. |
No, it does the same thing even with the clutch start cancel switch. Where is the neutral safety switch located and what is it's purpose?
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Originally Posted by 87-4runner
(Post 52414053)
... button, it would be indicative of something wrong with the NSS... just sayin.
Originally Posted by DeVore007
(Post 52413979)
... thought it was fuel pump so that's where I started along w/ new filter and no change, since then I have done cold start injector & switch, plugs, wires, rotor, cap. MAF, ignitor, coil, ECU, fuel pressure regulator, new battery this summer, Engine coolant sensor, and circuit opening relay. ... I bought a block heater tonight, ....
Were any of these parts changed for a reason? What do you mean when you say you have "done cold start injector & switch ..."? Your problem does sound like a CSI issue. So before you start throwing more parts at it (is your arm sore yet?), you might just test it. Pick out a reasonably cool day. Pull the CSI out of the plenum (do NOT disconnect the fuel line -- if you do that, you MUST replace the crush washers). Put a rag into the hole into the plenum (you don't want to suck up anything when you crank it). Put the injector into a suitable container, and have your assistant crank it. You should get a nice, fine, spray for a few seconds, which should shut off even if still cranking (and shut off once you stop cranking). |
Originally Posted by scope103
(Post 52414060)
The Park/Neutral Position Switch (Neutral Start Switch) is a feature of Automatic Transmissions. That, and the Clutch Start Switch on manuals, interrupts the starter circuit. If DeVore's starter spins, it's not that circuit
Hmmm. Did you try replacing the left turn signal bulb? Were any of these parts changed for a reason? What do you mean when you say you have "done cold start injector & switch ..."? Your problem does sound like a CSI issue. So before you start throwing more parts at it (is your arm sore yet?), you might just test it. Pick out a reasonably cool day. Pull the CSI out of the plenum (do NOT disconnect the fuel line -- if you do that, you MUST replace the crush washers). Put a rag into the hole into the plenum (you don't want to suck up anything when you crank it). Put the injector into a suitable container, and have your assistant crank it. You should get a nice, fine, spray for a few seconds, which should shut off even if still cranking (and shut off once you stop cranking). |
Good point. (Since I have an auto, I don't know much about how the clutch start switch works.)
This shouldn't work with an auto. The PN switch is in the same circuit as the CSI, so if you turn the key to start with the transmission in D (to keep the starter from turning) the CSI should not spray. |
I have tested the CSI and it is working properly....I was throwing new parts at it based off of codes I was getting from the check engine light.....I'm no longer getting a check engine light. (Started with the 14, and 25 code). I'm also not a mechanic, so I would read forums and see similar issues, and just try replacing parts. One again though, I no longer have any codes or check engine light.
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Originally Posted by scope103
(Post 52414067)
Good point. (Since I have an auto, I don't know much about how the clutch start switch works.)
This shouldn't work with an auto. The PN switch is in the same circuit as the CSI, so if you turn the key to start with the transmission in D (to keep the starter from turning) the CSI should not spray. |
Scope, what would the turn signal have to do with anything? or was that just a joke for all the part i've been throwing at it?
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Originally Posted by DeVore007
(Post 52414073)
Scope, what would the turn signal have to do with anything? or was that just a joke for all the part i've been throwing at it?
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Wait. A problem well-stated is almost solved.
Originally Posted by DeVore007
(Post 52413979)
... when I try starting the truck it just turns over and over and over...
Originally Posted by DeVore007
(Post 52414040)
Yes, that is what I mean. Litterally only have to pull it 5 ft and pop the clutch and fires right up...
1) Is the starter energetically turning the engine but you do not see, hear, feel, smell combustion = VROOM? Then, you have a combustion problem. 2) Does the 3) How did you DO the CSI and the CSI timer switch? Measured voltage? Measured resistance? Cleaned them AND MOUNTING THREADS to bare, shiny metal? Replaced them? |
I replaced the CSI and CSI switch, also made sure it was working correctly during a cold start by doing the test mentioned above.
I don't really understand what you mean about the starter "energetically" turning the engine. The started doesn't seem week, it doesn't just spin or anything like that. The truck does have good spark. You can hear it trying to fire on the cylinders, and it eventually starts to smell like fuel. It just wont start. What I mean by "fires right up" is I can pull the truck about 5 foot, pop the clutch, and it starts. Before I had the complete no start, I could literally crank and crank with the key for about 5 minutes (taking breaks, not continuous) and it would eventually take off and start. |
How about a brief update of where you are now? I repeat (revised questions):
1) Is the starter energetically turning the engine but you do not see, hear, feel, smell combustion = VROOM? Then, you have a combustion problem. 2) Does the
Originally Posted by DeVore007
(Post 52414090)
...I don't really understand what you mean about the starter "energetically" turning the engine....
Before I had the complete no start, I could literally crank and crank with the key for about 5 minutes (taking breaks, not continuous) and it would eventually take off and start. But now you have "complete no start" meaning the starter would not even turn the engine? That is a cranking issue battery could have died from all the cranking you did. |
Duplicate post.
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Lol, No. the starter still turns the engine, starter engages and turns over, battery is not dead. |
Originally Posted by DeVore007
(Post 52414140)
Lol, No. the starter still turns the engine, starter engages and turns over, battery is not dead.
Originally Posted by DeVore007
(Post 52413979)
... as it started cooling down outside my truck became harder to start in the mornings....
... cold start injector & switch, . ...Engine coolant sensor... ...Once it is pull started, I can shut it off and it will continue to start w/ the turn of the key. Next day, it won't start again.... Did you clean mounting threads on engine block / thermostat housing for sensors with only one wire leading to them? Sensor uses bare, shiny metal of mounting threads to get ground. Have you checked fuel pressure? After truck has ran normally, something in the fuel pump and lines normally keeps fuel pressure in the line up for several minutes after you shutdown. Some of us installed fuel pressure gage piggybacked on CSI to monitor those. One less thing to doubt when troubleshooting so worth the investment. My write-up here. Also, Could someone chime in where the fuel pressure up VSV is on the 3.0? The vacuum line to furl pressure regulator, if unplugged and plugged back in, exposing diaphragm to atmosphere or vacuum should affect fuel pressure (unplugging to expose to atmosphere will increase fuel pressure). That a test that's free and worth trying. Video on 22R-E here: |
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