Car stalls when warm. wont restart until completely cooled off
2005 Buick Rainier

Car stalls when warm. Wont restart until completely cooled off

(2005 Buick Rainier)
2005 buick ranier cxl v8 Car will start when cold. If left to sit and idle.. It will do so for about an hour. Then it will stall and not restart until completely cold.
Have replaced the map sensor, crankshaft position sensor, throttle body and tps, fuel pump relay.. Cleaned the maf with elextronics cleaner.. It still does it.. I'm at my wits end with this stupid car..
No codes either btw...
Runs perfectly until it stalls.
What seems to make the problem better or worse? When at operating temp
How long have you had this problem? Couple weeks now
Tags: buick, rainier
1 answer & 3 comments
Popular Answer
on August 29, 2019

When the engine stalls AND while it will not restart - *HANDS-ON* TESTING MUST BE PERFORMED AT THAT PARTICULAR TIME !

Is ignition spark present / sufficient ?

Is sufficient fuel pressure present ?

Otherwise it’s a guessing game!
Sign in to reply
on August 29, 2019
Fuel pressure is normal when it runs. Changed the ignition module. Still doing the same thing
on August 29, 2019

What is the diagnosis when the engine will not start?
on September 04, 2019
It doesnt throw any codes when it stalls.
Also just put a new fuel pump on it.
Car runs so good it leaves water on the driveway. If I turn it off at temp it will not restart.
Same if it stalls.
Until the engine is stone cold.
General Diagnosis
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on August 29, 2019

When the engine stalls AND while it will not restart - *HANDS-ON* TESTING MUST BE PERFORMED AT THAT PARTICULAR TIME !

Is ignition spark present / sufficient ?

Is sufficient fuel pressure present ?

Otherwise it’s a guessing game!
Sign in to reply
on August 29, 2019
Fuel pressure is normal when it runs. Changed the ignition module. Still doing the same thing
on August 29, 2019

What is the diagnosis when the engine will not start?
on September 04, 2019
It doesnt throw any codes when it stalls.
Also just put a new fuel pump on it.
Car runs so good it leaves water on the driveway. If I turn it off at temp it will not restart.
Same if it stalls.
Until the engine is stone cold.

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