Having problems with your 2005 Jeep Grand Cherokee ?
The engine power pulses at higher RPM and sometimes the engine stalls after starting. The problem is intermittent and seems like it might be fuel pump related.
Your going to receive answers about electronic issues and spark plug wires and dirty injectors, but I would start with a fuel pressure test because of the way you worded your problem, (OK, at idle, but when a demand of fuel needed, pulsing) Probably a fuel pump problem if dry gas can't clear it up.
Repair Help & Product Troubleshooting for 2005 Jeep Grand Cherokee
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