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Old 04-11-2013, 04:25 PM   #1
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Angry Intermittent Sputtering and Hesitation

Hello all,
I was wondering if you guys could help with an issue I am having with my 1997 4 cylinder wrangler. When the truck is cold, it takes a long crank to start, unless I turn the key a few times before starting it, which is making me think a fuel pressure regulator. Once it is started it intermittently sputters, does not do this all the time, but it does hesitate on acceleration all the time unless it is at normal temperature. Sometimes when I step on the gas the vehicle does not go anywhere it just backfires, let go of the gas and wait a couple seconds and it goes. Just replaced the tps, iac and ignition coil, cap and rotor are fairly new and so are the plugs. No check engine light or codes stored. Thanks in advance for any input.

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Old 12-05-2013, 10:24 AM   #2
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sounds like you need a new fuel pump. get a fuel pressure kit and check the pressure on the fuel pump right before the rail. make sure it makes enough pressure and can hold it. i think you want about 36psi or more, and to hold that psi for more then 5mins. my guess is it will take a couple cycles of the key to get that pressure and then the psi will drop so u need a new fuel pump. do that first then we will start checking injectors and for spark.

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Old 12-05-2013, 11:11 AM   #3
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I have to do the same key cycle to get mine going. That's your fuel pressure regulator going out. You can replace just the regulator but you might as well do the entire fuel pump since you'll be dropping the tank anyway. Make sure you go with name brand or OEM fuel pump/regulator. Auto Part Store ones will go out on you in a few months and you'll be dropping the tank all over again
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Old 12-05-2013, 07:36 PM   #4
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Quote:
Originally Posted by wranglergirl89 View Post
Hello all, I was wondering if you guys could help with an issue I am having with my 1997 4 cylinder wrangler. When the truck is cold, it takes a long crank to start, unless I turn the key a few times before starting it, which is making me think a fuel pressure regulator. Once it is started it intermittently sputters, does not do this all the time, but it does hesitate on acceleration all the time unless it is at normal temperature. Sometimes when I step on the gas the vehicle does not go anywhere it just backfires, let go of the gas and wait a couple seconds and it goes. Just replaced the tps, iac and ignition coil, cap and rotor are fairly new and so are the plugs. No check engine light or codes stored. Thanks in advance for any input.
All good previous suggestions..... Have you considered top tier gas? My vehicle starts & runs better since I stopped using Walmart & Kroger fuel.
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