Hi guys,

My 7 is acting like a bitch. Only at night, with the dim lights or head lights on, there is 2500-3300 rpm hesitation. The hesitation would happen when I slowly acceralates the 7 or keep the rpm at that point. It doesn't happen when the turbo is spinning tho. I think it's about electric cuz one evening, I turned the dim lights on. Then, there is hesitation....While the engine's hic-cupping, I turned the dim lights off. There gone the hesitation!!!!!

Any helps and suggestion would be very appriciated.

POM HB

 

Ooooo...And,

I forgot that also, only at night, sometimes 'engine check light' comes on. That only happens when I cruises around 70 mph on freeway back home. May or may not happen if I'm not cruising tho.

Thanks in advance,

POM HB

 

Ground and or the alternator.

 

Thanks.

Anymore suggestion?

Also, once the engine check light comes on, the car doesn't have anymore hesitation! Don't know if it's related. Seem to me as if the ecu goes for another map...one without feedback from sensors.

POM HB

 

Well, pull the engine codes to see what they are...

Also, as suggested get a grounding kit or make some extra grounding wires.

 

ground and/or the alternator....................
John

 

Since it only happens at night I think you have a vampire inside your engine.

Clean your battery posts with a cylindrical post cleaner, the terminals with the wire brush, check to make sure your alternator is putting out 13.4 volts or more.

 

Thanks again for your advice. Seem like it's electrical...more specifically about not enough voltage for everything. I'm having a mech relocating the battery right now....think it would help?

And, the vampire joke is really good....made me laugh...ie ie ie. thank you, my friend.

POM HB

 

Sounds to me like it could be related to your throttle position sensor (TPS). The load of the lights will make change the throttle position, maybe enough to make a difference. But, like Mahjik said, pull the codes and see what they tell you first.

Good luck.

Jeff

 

ok i am a newb so sue me...


how do you pull the codes? i wanna know..

 

http://www.scuderiaciriani.com/rx7/engine_codes.html

You can also use he "search" function in the forum to find 99% of the questions you'll probably ask.