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Old 11-24-2011, 08:58 PM
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delayed start

i bought this truck Monday it has had the glow plugs changed but takes a little long to start. with my remote start it takes it twice to start. If i do it manually it takes about a second or two longer then it should. just wanted to see if anyone might know what it might be.

it also has a part throttle hesitation at cruising speed on freeway. just does it after i accelerate then back off the throttle to hold my speed but only does it about 2 times real quick. almost like a Throttle position sensor was getting a wrong volt reading. that leads me to wanting to know if a diesel has a TPS sensor or something like that.
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Old 11-25-2011, 08:14 AM
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Does the remote start have a timer on it? The GP's can stay energized for about two minutes depending on temperature. If they are not allowed to run for 20-30 seconds it may not be long enough to get a good start when cold. Also does it do this when warmed up?

Slow to start can be caused by weak batteries and a weak starter. The engine needs to spin fast enough to build 500 psi in the high prrssure oil system. If either one of those is weak it will not happen.

Your TPS could have a dead spot in it. They are just a potentionometer and do have issues from time to time.

What truck are you working on? I assume you have a 99-03 7.3 as you are in this section. You should add to your signature or posting what you are working on......
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Old 11-25-2011, 09:36 AM
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yes it does have a timer on it. i does wait till the wait to start light turns off. it happens about 90% of the time when warm if its cold it always does it even when plugged in.
The truck has new battery's and cables along with the new GPs

the truck is a early 99 F350
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Old 11-25-2011, 12:12 PM
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What about a new glow plug relay. Should easily start if everything is working properly. Check the gpr if it's not new. I had a problem with mine starting and that fixed.


Sent from my iPhone
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Old 11-25-2011, 02:43 PM
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If it starts manually, is there a setting on the remote start system that allows it to crank a little longer, or does it use an rpm signal to sense the start?
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Old 11-25-2011, 05:25 PM
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idk thats what i need to find out. but it starts with the auto start just might take it 2 times before it will start.

i will be doing the GPR next as a just because.
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