[BKPerry]

Hello.....

95 Caprice 5.7L

Engine has been running well, then started to fluctuate idle, “surging” between 800-400 (or less) and the dies.... when warm it will surge at stop lights...... some mornings it is very hard starting, have to crank it over 2-3 times and will start........ Thanks in advance

 

[wknox]

Hello.....

95 Caprice 5.7L

Engine has been running well, then started to fluctuate idle, “surging” between 800-400 (or less) and the dies.... when warm it will surge at stop lights...... some mornings it is very hard starting, have to crank it over 2-3 times and will start........ Thanks in advance

Have you tried IAC Idle air control valve, make sure its clean, and no carbon in that system

 

[BKPerry]

Have you tried IAC Idle air control valve, make sure its clean, and no carbon in that system

Not yet, but I was thinking that could be a good place to start........ thank you for your reply, I appreciate it

 

[jayoldschool]

Test fuel pressure. Key on to run, while cranking, while idling, while accelerating.