hard to start, car hesitates and acts like it wants to cut off when I press the gas - Chevy Impala SS Forum
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post #1 of 21 (permalink) Old 08-03-2010, 06:22 PM Thread Starter
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hard to start, car hesitates and acts like it wants to cut off when I press the gas

95 chevy caprice stock.
I was thinking it was the maf, but I am getting no codes.

09 G8 GT, lets just say modded
95 b4u- basically sold sadly
2009 jeep cherokee- sold
2014 grand cherokee
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post #2 of 21 (permalink) Old 08-03-2010, 06:24 PM
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Question

Have you checked fuel pressure? Should be 40 psi with key on and stay there after key is turned off.
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post #3 of 21 (permalink) Old 08-03-2010, 06:29 PM Thread Starter
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I will go check.

09 G8 GT, lets just say modded
95 b4u- basically sold sadly
2009 jeep cherokee- sold
2014 grand cherokee
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post #4 of 21 (permalink) Old 08-03-2010, 06:37 PM Thread Starter
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i think it may be a vacuum leak, I heard a sucking noise while driving, but will a vacuum leak cause a hard start?

09 G8 GT, lets just say modded
95 b4u- basically sold sadly
2009 jeep cherokee- sold
2014 grand cherokee
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post #5 of 21 (permalink) Old 08-03-2010, 07:06 PM
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Is everything secure from the MAF to the TB? A leak in that area could cause it to act like that.

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post #6 of 21 (permalink) Old 08-03-2010, 07:08 PM Thread Starter
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Well i checked my vacuum lines and found this, i just got the car out of the shop and i told them the lines were broken right there and needed to be replaced and this is what i found. Where can i get new vacuum lines and what is the name of the connector that should be right here. Can anyone tell me what they were trying to accomplish by doing this, and can where do the vacuum lines run and i will fix it myself.

09 G8 GT, lets just say modded
95 b4u- basically sold sadly
2009 jeep cherokee- sold
2014 grand cherokee
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post #7 of 21 (permalink) Old 08-03-2010, 07:21 PM Thread Starter
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this is the passenger side of the intake.

09 G8 GT, lets just say modded
95 b4u- basically sold sadly
2009 jeep cherokee- sold
2014 grand cherokee
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post #8 of 21 (permalink) Old 08-03-2010, 09:24 PM
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I think that goes to the EVAP solenoid. They probably disconnected it and jumped it to prevent a CEL.

1996 DCM SS 201k
1996 Black RMW 158k
1995 DCM Roadmaster Wagon 110K
1995 LDM 1A2 Caprice Wagon 205K
1994 9C1 Caprice 151k
1992 Olds CC 5.3l LS swap 174k
1996 Black/Black FWB SOLD
1975 Impala Coupe

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post #9 of 21 (permalink) Old 08-03-2010, 09:30 PM Thread Starter
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will this cause the problems I am having. I don't want to use shortcuts, is rather just replace the solenoid and vacuum lines. I'm going to get this sorted out this weekends.

09 G8 GT, lets just say modded
95 b4u- basically sold sadly
2009 jeep cherokee- sold
2014 grand cherokee
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post #10 of 21 (permalink) Old 08-03-2010, 09:43 PM
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It depends. On my caprice the elbow going from the throttle body to the pipe that then goes into the solenoid that this plugs into was rotted out and cracked badly. I can't get a replacement, thank you GM for discontinuing that part! I drove it for a while with it unplugged and capped the port on the throttle body, and aside from the CEL it ran fine. Is the solenoid still there?

1996 DCM SS 201k
1996 Black RMW 158k
1995 DCM Roadmaster Wagon 110K
1995 LDM 1A2 Caprice Wagon 205K
1994 9C1 Caprice 151k
1992 Olds CC 5.3l LS swap 174k
1996 Black/Black FWB SOLD
1975 Impala Coupe

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