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Cruiser stalls when downshifting or turning

 
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  #1 (permalink)  
Old 12 Jan 2013, 01:03 am
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Default Cruiser stalls when downshifting or turning

Hi, I am a new member, have had my 2003 cruiser since 2004. It has been a good little car with few problems. It has just started to stall intermittently when downshifting (5 speed manual transmission) to stop or make a turn. It just stops and the wheel tightens up but doesn't lock. It doesn't happen at any other time, happens more when it is cold. Occurs perhaps 4-5 times a week. If the car is still rolling I can just pop the clutch and it restarts. If I have stopped, I have to restart the engine. The entire clutch system was replaced 2.5 years ago, and the clutch seems to be working fine. The ignition switch is showing some wear, and occasionally the key falls out while driving, but the car keeps running. The two events do not seem to be connected.
Any ideas before I take it in?
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Old 12 Jan 2013, 08:01 am
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Default Re: Cruiser stalls when downshifting or turning

There's two sensors on the side of the throttle body (IAC Idle Air Controller, TPS Throttle Position Sensor) that might need cleaning or replacing. Either one could be the cause of your stalling. When it stalls, does the engine light come on. If so, the fault code in the computer might help pin-point what's wrong. Here's how to get the codes.

How to retrieve fault codes.
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Old 12 Jan 2013, 12:54 pm
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Default Re: Cruiser stalls when downshifting or turning

Also...the throttle body probably needs cleaning.

You say the ignition switch is "showing some wear"...these are problematic on the PT. Check it out if the throttle body cleaning doesn't help.
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Old 16 Jan 2013, 07:31 pm
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Default Re: Cruiser stalls when downshifting or turning

I checked the codes and they were all clear, this was confirmed by mechanic. They replaced spark plugs and wires, checked the the sensors, and the throttle body and they all looked fine, but it is still Intermittently stalling when coming to a stop, or decelerating to go into a turn.
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Old 16 Jan 2013, 08:35 pm
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Default Re: Cruiser stalls when downshifting or turning

Is it running rough at all, idling rough, or just running smooth until this happens? Just curious.
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Old 17 Jan 2013, 09:57 am
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Default Re: Cruiser stalls when downshifting or turning

Quote:
Originally Posted by haandyjen View Post
I checked the codes and they were all clear, this was confirmed by mechanic. They replaced spark plugs and wires, checked the the sensors, and the throttle body and they all looked fine, but it is still Intermittently stalling when coming to a stop, or decelerating to go into a turn.
I have a similar problem, mine doesn't stall (hasn't yet, knock on wood).

But sometimes (it doesn't do it all the time) as I'm coming to a stop, clutch in, the rpms' will drop and it'll run rough for a second... Drops to like 450 - 500 but just momentarily.

I cleaned TB recently, plugs are less than a year old, wires just a little older. No engine lights.

Sounds like I have a more mild case - but same problem, no?
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Old 17 Jan 2013, 10:21 am
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Default Re: Cruiser stalls when downshifting or turning

Quote:
Originally Posted by haandyjen View Post
I checked the codes and they were all clear, this was confirmed by mechanic. They replaced spark plugs and wires, checked the the sensors, and the throttle body and they all looked fine, but it is still Intermittently stalling when coming to a stop, or decelerating to go into a turn.
I don't think you can just "check" the IAC and TPS sensors, which both/either one could cause stalling. The IAC can be taken off and cleaned , the TPS has to be replaced.
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Old 17 Jan 2013, 12:41 pm
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Default Re: Cruiser stalls when downshifting or turning

Remove the IAC and give the throttle body a thorough cleaning.

Also, IIRC, the 03 has an EGR valve, remove and clean it...you will probably find it is all carboned up.
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Old 18 Jan 2013, 03:22 am
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Default Re: Cruiser stalls when downshifting or turning

Before the plugs were replaced, running a little rough, but barely. It just quits. Always start up again just fine. If it happens during a decelerated turn, I can just pop the clutch and it restarts
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Old 18 Jan 2013, 03:24 am
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Default Re: Cruiser stalls when downshifting or turning

that is how it started. I took it in for a tune up and they didn't find anything wrong then. Other than one bad plug and wire they found nothing else, but the new plug did not solve the problem.
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