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What causes a really bad "cold" start issue? by mitchjl22
Started on: 10-29-2014 12:43 AM
Replies: 4 (99 views)
Last post by: mitchjl22 on 10-29-2014 01:00 PM
mitchjl22
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Report this Post10-29-2014 12:43 AM Click Here to See the Profile for mitchjl22Click Here to Email mitchjl22Send a Private Message to mitchjl22Edit/Delete MessageReply w/QuoteDirect Link to This Post
So this 1986 GT with a 4 spd manual and 49,800miles has a terrible time starting 8/10 times. This video was taken after it sat for approx. 2.5mo. while my dad was out of town. The car wasn't touched the entire time. The other times this car will do this is after it sits for just a few hours. It takes multiple tries to get the beast to start. What causes this?

-Mitch

https://drive.google.com/fi...WWc/view?usp=sharing
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MaxCubes
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Report this Post10-29-2014 01:15 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
1... old gas
2... vacuum leak, crack vacuum hoses
3... low fuel pressure, weak fuel pump
4... old sticking injectors
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phonedawgz
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Report this Post10-29-2014 06:08 AM Click Here to See the Profile for phonedawgzClick Here to visit phonedawgz's HomePageClick Here to Email phonedawgzSend a Private Message to phonedawgzEdit/Delete MessageReply w/QuoteDirect Link to This Post
Check your fuel pressure when this problem is happening.
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Bloozberry
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Report this Post10-29-2014 09:22 AM Click Here to See the Profile for BloozberrySend a Private Message to BloozberryEdit/Delete MessageReply w/QuoteDirect Link to This Post
Could be faulty:

- ECM temperature sensor (called the coolant temperature sender or CTS)

- fuel pump relay (if it's shot, it will take more cranking to start because it will rely on the oil pressure switch to turn on the pump);

-cold start injector circuit;

-clogged air filter, fuel filter;

-Idle Air Control valve (IAC)
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mitchjl22
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Report this Post10-29-2014 01:00 PM Click Here to See the Profile for mitchjl22Click Here to Email mitchjl22Send a Private Message to mitchjl22Edit/Delete MessageReply w/QuoteDirect Link to This Post
The car has a new fuel pump, strainer, and filter.

The fuel pump relay is good, cause I disconnected the oil gauge sender and it started fine.

So the IAC and CSI are the only other things to rule out.
EDIT: I need to check the temp sender. I just need to figure out how work the ALDL scanner from phonedawgz

-Mitch

[This message has been edited by mitchjl22 (edited 10-29-2014).]

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