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Hey folks, I have been having some starting/ hesitation issues with my wifes 2007 Chrysler aspen with the 5.7 hemi that has about 120,000 miles on her ticker. The starting issues only usually happen when we first start the vehicle in the morning, it turns over just fine but seems like it takes a bit for the engine to start, also under moderate acceleration it seems to be doggy. I recently replaced that battery so I know thats not it, I’ve also bought some injector cleaner which seemed to help a bit, but not with the starting, I also just replaced an O2 sensor because it threw a code. So I’m thinking either fuel or spark for these issues, any advice/ insight would be awesome because its driving me nuts! Thank you in advanced
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You’re correct in looking for fuel or spark issues. You might start by checking the fuel pressure.
You’ll find more on solving issues like this here.
http://www.ericthecarguy.com/faq/solving-automotive-performance-issues
Good luck and keep us updated on what you find.
Thanks Eric! I haven’t checked the fuel pressure yet but tore into her yesterday as I needed to replaced the purge valve solenoid (maybe) it was throwing the p0452 code so figured I would start with that considering it’s a pretty cheap part. While i wash under there the hood i figured i would check all 16 spark plugs. All their gaps were good however there were 4 that seemed to have a dry soot on them and also one of the bolts.on a coil pack was loose, i cleaned the plugs that needed it and threw everything back together. I’m about to go start her up and she how she acts the next few days. Def will check fuel pressure in the coming days
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