2005 Pontiac Montana hard start when hot
#11
Retired
Gotcha! Thanks for relearn!
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#12
Retired Senior Admin
Expert Gearhead
Thread Starter
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes
on
24 Posts
Not a problem. I was convinced there was a FPR. I looked around, nope, can't find it. After steeping back and looking at the bigger picture I realized this is a returnless fuel system. Just has the one fuel line in, and that'* it. Also realized I don't care for the engine much. The injectors are under the intake manifold. As well as the fuel rail.
#14
Retired Senior Admin
Expert Gearhead
Thread Starter
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes
on
24 Posts
That'* one of the things I was thinking. That'* why I mentioned the TSB talking about the HB not being seated. Made me think the crank sensor might not be picking up right. Might have to see if I can toss the oscilloscope on it.
#19
Senior Member
Posts like a Turbo
Join Date: Mar 2009
Location: Richmond,Va.
Posts: 342
Likes: 0
Received 0 Likes
on
0 Posts
Thanks, I didn't see a pattern before but the short drive, heat soak angle fits what I have been seeing. I'll probably get it taken care of tomorrow. Will report back as soon as I can say for sure that it was or wasn't the problem. I did notice that it takes longer for it to recover as the outside temps go up. No problem during the winter months and I have experienced this on and off for at least a couple of years. In hindsight it also cranks a little longer before it starts on warmer days lately where normally it will start as soon as the key is turned.