Starts had when hot
Thread Starter
Registered User
Joined: Jul 2013
Posts: 7
From: Oswego, ny
Starts had when hot
I just got this 95 z28 with a reman lt1 with 6k on the new motor. Ca starts good when it's cold but when car is at temp or even after driving for a bit i starts hard. Has a new battery too. 700 cca. Anyone have any thoughts?
Administrator
Joined: Nov 1998
Posts: 71,123
From: Hell was full so they sent me to NJ
Re: Starts had when hot
When it warms up does it seem to be running rich? A problem with the coolant temp sensor (the one in the water pump housing, for the PCM) can cause difficult hot starts if it's not telling the PCM the engine is warmed up.
May also be a problem with the ignition control module (ICM) heat soaking.
Do you have the ability to scan it for codes or to data log the PCM?
Might be worth checking the fuel pressure at cold and hot starts.
May also be a problem with the ignition control module (ICM) heat soaking.
Do you have the ability to scan it for codes or to data log the PCM?
Might be worth checking the fuel pressure at cold and hot starts.
Thread Starter
Registered User
Joined: Jul 2013
Posts: 7
From: Oswego, ny
Re: Starts had when hot
Ill get it scanned to see if there are any codes. Are the above issues easy to fix or are they pretty involved to get to the sensors? I haven't had the car long so I don't know my way around it yet.
On a side note it does have a bigger tb and a cold air installed. Should it be tuned at this point or would that come after other modifications?
On a side note it does have a bigger tb and a cold air installed. Should it be tuned at this point or would that come after other modifications?
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
Oct 31, 2016 11:09 AM
mspennyhughes
LS1 Based Engine Tech
4
Mar 1, 2015 03:50 PM
Caps94ZODG
Automotive News / Industry / Future Vehicle Discussion
22
Jul 30, 2002 08:45 AM