What would cause limp mode without throwing a code
02-28-2006, 11:16 PM
#3
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
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RE: What would cause limp mode without throwing a code
ORIGINAL: philly3384
Once the car goes into closed loop the car goes into "failure/limp mode" But there is no check engine light what could it be.
Once the car goes into closed loop the car goes into "failure/limp mode" But there is no check engine light what could it be.
03-01-2006, 01:32 AM
#5
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Join Date: Jul 2004
Location: Westminster, MD
Posts: 4,343
RE: What would cause limp mode without throwing a code
Thats not limp mode. It sounds more like a sensor is compensating for a problem or is the problem. I would still think a code would be thrown but your not always that lucky. What do you mean half the power? Does the car hesitate? I don't think its the tps like mentioned in other post because the problem would be noticed in open loop also. Hesitation once hitting closed loop is often a sign of bad o2 sensors. Unfortunatly with obd1 you can moniter o2 sensors from a scanner. You could test the o2's with a multimeter and see what the voltage fluctuates from. If it isn't fluctuating very fast this could a large part of your problem.
03-01-2006, 01:42 AM
#6
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Posts: 388
RE: What would cause limp mode without throwing a code
yeah the car hesitates, gets quieter, idles lower and becomes less powerful i could usually break 2nd gear lose when it goes into this slow state i cant even chirp second.
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