Battery went bad so I replaced the battery and alternator. Then the AC would not work and a week later it started running sluggish after warming up. To the point of stalling. Any help would be greatly appreciated.

 

Sorry. It’s a 2006 H3

 

Welcome to HF. Miles on it?

My question is (probably the first time I have ever asked this one ) Are you still trying to use the OEM Battery Terminal Connectors? If so, hack them off and replace with Stingers or your favorite aftermarket brand.

When was the last time the MAF was cleaned and when was the last time the Throttle body was cleaned? Goes without saying that you have to use MAF Cleaner only on the MAF and TB Cleaner on the TB.

 

During the alternator replacement you may have caused an intake leak if you removed any part of the intake. Make sure all components are sealed first.
Also check any and ALL connections near the alternator and battery. Retrace all your steps.
Then follow DOCs MAF/TB cleaning and check your air filter while you have the intake pieces off.

 

Please follow up and let us know if you need more help or worked it out.

 

Thank you guys. I will do all recommendations this weekend and update you. It just hit 160,000 miles. The MAF and TB have not been cleaned by me. Still has original battery terminal connectors. I’ve had it for a year and do love it.

 

With 160k you may need to do a few other things to improve performance.
All Syn lube changes if not already.
-Oil
-Trans
-Axels
Verify all cylinders are firing and plugs are decent

In addition to whats already said by the Guru's
-Tire inflations
-Coolant
-Air filter

Good fuel with some injector treatment.

 

Finally got to it Saturday. Changed to Stinger battery terminal connectors. Cleaned MAF. No change. Replaced spark plugs. First coil was rusty and pocket had standing water so I cleaned coil and pocket. No change. Replaced rusty coil. Started up and runs like a top! Thank you guys for all your help.

 

Thank you for reporting back with the details. Glad it is running again.

 

Yes, we appreciate the follow up for others in the future to help out.