Tonya,
It seems like there is a handful of problems, it's so unfortunate. To begin, the booster most definitly could have taken damage if it were improperly installed, or forced. Weren't these elctrical repairs done at another shop than Pepboys? Sounds like an electrical issue with the instrument cluster. But the power loss, doesn't coincide.. I think it's time to take the car to the dealer, for complete, thorough diagnosis. And the dealer needs to be informed of the entire history of the problem from the begining.Also inform Pepboys, they'll be liable for the repairs if the outcome reveals malpractice on their part. This may turn out to be a small claims issue, and I know it may sound too complicating, but it will need to be done in order to get reimbursed for your expenses. You may offer Pepboys a second opprtunity to fix all the concerns, but i'm afraid they might sublet the work to another inferior shop, and just more trouble will arise. You can opt to take it to the dealer, pay for the diagnosis, and when they conclude it was in relation to the Pepboys repairs, you can call Pepboys and see if they would like to pick the bill up, while the car is still getting repaired, or else it's court with the dealer repairs as evidence. Also, speak to the store manager. Let me know if you need further assisstance.
-Rip
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