zpw87gxl

Ill be drivin down the road doing 55 mph, and all of a sudden the rpms drop to around 3000 and ill have my foot on the gas the whole time and it just wont go past 3! So i stop and let it sit for a min and its back to norm. Whats the problem here?

Jpk3200

Sounds like it might be going into limp mode. Do you get a check engine light?

Chuck

iTrader: (2)

I would check the functioning of the secondaries and the actuators.

zpw87gxl

Im not getting any dummie lights, and the guy i bought it off of said that he replaced the injecters when he bought it. I ran some lucas injector cleaner through and it still does it from time to time. Whats limp mode?

sharingan 19

iTrader: (16)

you checked the spark plugs/ wires recently?

Limp mode is a sort of protective mode the ecu will go into if it senses something wrong w/ the car that could be detrimental.

Chuck

iTrader: (2)

I thought the limp mode function was only on the S5's. If his is an '87, that's an S4.

rgd-fc3s

I had the same problem around 3700- 4000, the secondary were the problem; the connection to the injectors were loose. I have an 87...I got under the hood, I could hear the extra breathing- but no 'fire'... the tabs on the cables were 'crispy'. I had the engine do it around 2500 as well.

mario1386

does the s4 have a limp mode?

rgd-fc3s

I don't think so. The oil pressure ok?

zpw87gxl

Yea the oil pressure is fine, but the primarys have been replaced allready, and i think it might need secondarys. I have a full cork sport exhuast system for it and i have a baffle, and i always ran it with out it. So one day i put the baffle in and it seems to run better, and hasnt really when in to "limp" mode. Does any one know were to get any s5 tail lights? : D

zpw87gxl

Does any one know a good rotory mechanic in cincinnati?