Ls1 turning off/low rpms no codes
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Ls1 turning off/low rpms no codes Whats up guys, I'm having this problem with my 2000 z28 camaro. It keeps turning off when I get to a stop sign or a red light. The RPMS go down and it just shuts off on me but itll turn back on like nothing. This problem isn't persistent though only happens when it wants to so its been a drag for mechanic even an electrician to pinpoint my problem. Here is a list of the symptoms it keeps having
-radio comes on and off
-My ASR off light comes on by itself
-My RPMS go way down when my ac is on & shuts off
-problem happens even when ac is off
The IAC has been replaced as well as crank sensor and computer. Throttle body was cleaned. Any leads on anyone that has experienced something like this? Or what it could be. Kind of getting tired of it and sucks that i get no error codes or nothing to help me pinpoint this. Thanks
-radio comes on and off
-My ASR off light comes on by itself
-My RPMS go way down when my ac is on & shuts off
-problem happens even when ac is off
The IAC has been replaced as well as crank sensor and computer. Throttle body was cleaned. Any leads on anyone that has experienced something like this? Or what it could be. Kind of getting tired of it and sucks that i get no error codes or nothing to help me pinpoint this. Thanks
Check all grounds including the 3 on back of passenger side head. Clean MAF sensor & very carefully. Could also be an intermittent internal ground issue inside the PCM. Because the issue is sporadic, it may not be happening w/enough consecutive counts in order to throw a code.
Thread Starter
Registered User
Joined: Oct 2015
Posts: 3
Likes: 0
Check all grounds including the 3 on back of passenger side head. Clean MAF sensor & very carefully. Could also be an intermittent internal ground issue inside the PCM. Because the issue is sporadic, it may not be happening w/enough consecutive counts in order to throw a code.
My car from stock had this sort of behavior, when A/C on,
hot weather, fans not running the alternator voltage sag
would canse poor idling and near-death. Believe this was
the alt regulator pulling back on field current when over-
heated. When I started running full time low speed fans
the problem quit happening. Be sure you get good air flow
through the condenser / radiator stack, which gets filled
up with debris over time. Try an experiment where you park
idle with A/C until it starts showing signs, then just open
the hood. If it gets better, look to engine bay temperatures.
Raising idle speed a hair, also can help because now the
alt gets its input power from shaft, not field current so much.
But cleaning and tightening each and every ground and
BAT / IGN junction can't hurt. Don't neglect the terminals
at the battery, copper corrosion is common from leaking
side post terminals (2 Delcos in a row chewd mine right
up, no problems since going to Autozone Gold, cleaning
and soldering over the crimp connections there (you need
a mondo iron for that, though).
hot weather, fans not running the alternator voltage sag
would canse poor idling and near-death. Believe this was
the alt regulator pulling back on field current when over-
heated. When I started running full time low speed fans
the problem quit happening. Be sure you get good air flow
through the condenser / radiator stack, which gets filled
up with debris over time. Try an experiment where you park
idle with A/C until it starts showing signs, then just open
the hood. If it gets better, look to engine bay temperatures.
Raising idle speed a hair, also can help because now the
alt gets its input power from shaft, not field current so much.
But cleaning and tightening each and every ground and
BAT / IGN junction can't hurt. Don't neglect the terminals
at the battery, copper corrosion is common from leaking
side post terminals (2 Delcos in a row chewd mine right
up, no problems since going to Autozone Gold, cleaning
and soldering over the crimp connections there (you need
a mondo iron for that, though).
I agree with the above, fwiw a cam sensor will not do what you are experiencing. The engine will actually run just fine with it failing. Symptoms would include a hard start and the tach not working. I've had mine go bad before and everything worked fine except the tach would go out intermittently and it would hard start.
I had a similar issue in the past. Car would shut off when stopped or just starting to go. Did it to me twice in the middle of an intersection. Turns out I traced some wires others suggested and they went to the bulk harnesses that are over the pass strut tower. I had done the hidden mod years ago rerouting those wires. I undid all of that and ran them back to their stock place and all issues disappeared. I had this mod since 2003 and this was in 2011. Still haven't seen the issue again.
