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No start when hot..?

vrfour_nz

Well-known member
Joined
Oct 27, 2008
Messages
55
Location
Wellington,New Zealand
Anyone had a experience of crank but no start when hot,no fault codes..ECU & ISC is in great condition..thought I had a fuel pump problem but it tests fine. Runs a chip similar to keydiver with stutter,055 afm,560 injs. Maybe thinking a sign of the No 1 TDC sensor failing?
 

AnotherNewb

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Joined
Apr 25, 2010
Messages
1,472
Location
Orlando, FL
Check your coolant temp sensor. Most likely the cause. There is a test procedure but it eludes me at the moment.
 

Adorsey

Well-known member
Joined
Apr 22, 2009
Messages
355
Location
mass
Very common with the temp. sensor. Just look for any faulty or haggard wires that may need replacing on the t-stat.
 

vrfour_nz

Well-known member
Joined
Oct 27, 2008
Messages
55
Location
Wellington,New Zealand
Had a try on it today again..left battery disconnected and went back to it. Starts cold then after a few minutes of running turned it off and it will not start again. I've now tryed another water temp sensor,afm,crank sensor,tested fuel pump pressure with the checker terminal. The wiring is in great condition. Any other suggestions?
 

dmj

Well-known member
Joined
Feb 2, 2008
Messages
673
Location
orlando FL
This is a wild card shot but takes less than a min , Start the car when it is cold then disconnect the fpr vac hose and check for a fuel/smell or leak .
 
Last edited:

Adorsey

Well-known member
Joined
Apr 22, 2009
Messages
355
Location
mass
Is that youre coolent temp sensor right there in the upper rad. hose?
Because the stock one is low on the t-stat, and is not the sensor on the direct top. I believe that is for ac.
 

mitsuturbo

Well-known member
Joined
Jun 2, 2008
Messages
3,544
Location
Near Seattle, Washington
What the hell is that thing sitting on the charge pipe? And what is that hardline running up to the fuel rail area from it for?
 

vtecds1

Well-known member
Joined
Jan 16, 2004
Messages
1,705
Location
Las Begas
My guess would be a catch can and a vacuum line.
 

vrfour_nz

Well-known member
Joined
Oct 27, 2008
Messages
55
Location
Wellington,New Zealand
Quoting Adorsey:
Is that youre coolent temp sensor right there in the upper rad. hose?
Because the stock one is low on the t-stat, and is not the sensor on the direct top. I believe that is for ac.

yep i know..replaced the ecu coolant sensor on t-hsg,not the fan switch on the adapter
 

AnotherNewb

Well-known member
Joined
Apr 25, 2010
Messages
1,472
Location
Orlando, FL
Do you have a data logger? Knowing that the ECM is seeing the temp sensor would eliminate the sensor. It could be a broke wire hidden under the insulation.
 
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