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95 Grand Cherokee 5.2l. Rapid engine surge at 1/2 to WOT.

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Idles fine. RPM's during surge...
95 Grand Cherokee 5.2l. Rapid engine surge at 1/2 to WOT. Idles fine. RPM's during surge 3,500 down to1,500, rapidly. I swapped out the TPS out of a '93 and it ran great for 20 miles and runs bad again.
Submitted: 9 months ago.Category: Jeep
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Answered in 13 minutes by:
11/12/2017
Jeep Mechanic: eauto, The Car Guy replied 9 months ago
eauto
eauto, The Car Guy
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Hi . Thank you for asking your question on JustAnswer.

any vacum leaks? have you changed the iac?

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