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  #1  
Old 11-11-2009, 11:39 AM
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Engine not starting?????

A few months ago i shut her down, went to resart and nothing. just turning over with a few misfires. I checked the timing belt, fuel pressure, the only code I get is 21( temp sending unit) I am needing some help before winter hits....
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Old 11-11-2009, 01:04 PM
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Re: Engine not starting?????

Quote:
Originally Posted by JWillysvx View Post
A few months ago i shut her down, went to resart and nothing. just turning over with a few misfires. I checked the timing belt, fuel pressure, the only code I get is 21( temp sending unit) I am needing some help before winter hits....
Its easy, look under your throttle body on the drivers side rear of the engine. Theres a brass sensor with two wires coming out of it, next to one with a single wire coming out of it. Replace the two wire sensor, its what tells the ECU whether you have a cold or warm engine and its a leading cause of a no-start condition. All you need is a 3/4 deep socket to replace it, and it will most likely solve your problem.

I would recommend getting the coolant temperature sensor from the dealer, as aftermarket ones tend to suck.
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  #3  
Old 11-11-2009, 01:11 PM
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Re: Engine not starting?????

I will order one right now!! Thanx
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Old 11-11-2009, 01:20 PM
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Re: Engine not starting?????

Try this, unplug it and try starting again. Hopefully you didnt crank the engine too much before and flood it. If the sensor is bad it may start right up with it disconnected......however the ECU rarely throws a code 21 unless the temp sensor is actually bad, so it needs to be replaced anyways...... this will just confirm it and at least hopefully get your car started.
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Old 11-11-2009, 01:31 PM
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Re: Engine not starting?????

I will try that first... I have cranked over quite a few times.
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Old 11-11-2009, 02:39 PM
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Re: Engine not starting?????

Do you think its the crank angle sensor? Did not start with the temp sensor unplugged.

James

Last edited by JWillysvx; 11-11-2009 at 04:25 PM.
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Old 11-11-2009, 04:42 PM
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Re: Engine not starting?????

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Originally Posted by JWillysvx View Post
Do you think its the crank angle sensor? Did not start with the temp sensor unplugged.

James
Let me ask you this.... when you checked the timing belt, did you verify both cams were in time with the crankshaft, basically you had all 3 timing covers removed and put the engine to TDC?

The reason I ask is, one time I thought my belt was ok and the driver side cam was in time with the crank..... and I assumed then ok the pass. side must be too (that cover is more of a PITA to remove), but what happened is a idler pulley dust seal caught in the belt and skipped timing on that one cam..... and trying to start gave a few misfires then nothing.

For this one you may try using starting fluid first in the intake, that way you can decide if you have properly timed spark or not and go from there.
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Old 11-11-2009, 08:02 PM
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Lightbulb Re: Engine not starting?????

Aha...I only inspected the drivers side cover. Did try using starting fluid, failed to fire. I will remove all covers and go from there....

James
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Old 11-11-2009, 09:34 PM
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Re: Engine not starting?????

Actually if I remember correctly you can save yourself the trouble of removing the middle one and just use the mark on the crank pulley to verify TDC..... to remove the middle cover you have to remove the alternator and the A/C bracket, as well as the crank pulley, not needed just to verify timing.

Hopefully you havent ripped that far into it yet. As far as the pass. side timing cover, it helps a lot to remove the EVAP canister and bracket first, and use a small bottle to catch the fluid when you pull the PS return hose.
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