Engine hesitate at 7250rpm
10-21-2012, 06:48 AM
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Engine hesitate at 7250rpm
Dear fellow rx-8 owners,
ok so i actually bought a used rx-8 about a month ago. It was great at first. But recently the CEL came on. I went to a authorised workshop to diagnose it and pulled a code p2008 "imrc circuit malfunction". so they told me something was wrong with the upper intake manifold. so i told them to proceed and check. they disassembled it, check all the solenoids, actuators. all were fine. they said might be one of the solenoids malfunctioning sometimes. ok nevermind, they put everything back, had the code erased. now the problem comes, when i accelerated my car 1st gear till 7250 rpm, it hesitate (although still can rev it to redline, but struggling). same as 2nd gear. which totally slows down acceleration than before. before taking it to the workshop, it was all good. no problems with that. revivng it daily. so i went back and asked them what happened. they said could be bad spark plugs. so is it true that spark plugs had caused this? I had read one of the thread saying it could be the ssv stuck or something. am currently waiting for my plugs to arrived.
2005 rx-8 MT 6sp 79,000km
ok so i actually bought a used rx-8 about a month ago. It was great at first. But recently the CEL came on. I went to a authorised workshop to diagnose it and pulled a code p2008 "imrc circuit malfunction". so they told me something was wrong with the upper intake manifold. so i told them to proceed and check. they disassembled it, check all the solenoids, actuators. all were fine. they said might be one of the solenoids malfunctioning sometimes. ok nevermind, they put everything back, had the code erased. now the problem comes, when i accelerated my car 1st gear till 7250 rpm, it hesitate (although still can rev it to redline, but struggling). same as 2nd gear. which totally slows down acceleration than before. before taking it to the workshop, it was all good. no problems with that. revivng it daily. so i went back and asked them what happened. they said could be bad spark plugs. so is it true that spark plugs had caused this? I had read one of the thread saying it could be the ssv stuck or something. am currently waiting for my plugs to arrived.
2005 rx-8 MT 6sp 79,000km
10-21-2012, 07:44 AM
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They tested all the valves with the hand vacuum and all seems fine. The mechanic is suspecting that the vdi solenoid might be the main culprit. Anyways, bought a used one from ebay. Just hope it solves my problem. Honestly can't sleep well lately. Thanks bse50.
10-26-2012, 06:32 AM
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VALVE,SOLENOID (KL01-18-741) - $92.00 - KL0118741
VALVE,SOLENOID (ZM03-18-741) - $62.96 - ZM0318741
VALVE,SOLENOID(PRC) (Z504-18-741A) - $76.11 - Z50418741A
saw these 3 different valves and wonder which is the VDI?
VALVE,SOLENOID (ZM03-18-741) - $62.96 - ZM0318741
VALVE,SOLENOID(PRC) (Z504-18-741A) - $76.11 - Z50418741A
saw these 3 different valves and wonder which is the VDI?
12-20-2012, 10:10 PM
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12-21-2012, 03:09 AM
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Yea actually I just realised that its supposed to have a red cap closing off that nipple. Because Im using a racing beat intake (Modded by previous owner) so I didn't know. Guess its the stupid mechanics took it out and misplaced it somewhere. So problem solved, power loss due to that vacuum leak.
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