Question about Chevrolet HHR
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Posted on Jan 02, 2017
SOURCE: 1992 isuzu trooper 3.2 DOHC
I had the same trouble with my 93 Trooper.
I went on a sensor-changing spree.
The one sensor that fixed this idle problem was the throttle position sensor.
You can get one here.
Throttle Position Sensor
It's very easy to change, and fixes the problem instantly.
Posted on Sep 19, 2008
SOURCE: 2006 Chevrolet HHR LT Problem
After searching around, I found several posts that suggested reseating all the relays and fuses under the hood. After checking, I noticed nearly all of them were not seated well. I pushed them all down and I haven't had the problem since.
Posted on Jan 09, 2009
I had a similar problem on my 2002 Impreza RS 2.5 (same engine and engine control system). In my case it was the O2 sensor on the intake manifold. This happened at 34,xxx mi. so it was covered by the warranty. Replacing the part is very easy. (two bolts and a wiring harness). Obviously I would start simple and cheap and work your way to expensive and difficult.
From my understanding its all caused from the engine missfiring. If its been a while or never, I'd change the spark plugs first. (stick with the Subaru Parts plugs, I went after market and the dealer claimed the plugs were not the correct "temperature" and had to pay for the new plugs and install although they did it without my permition. Thats a whole nother story).
Could also be the manifold pressure sensor.
Either 02 or manifold pressure sensor may cause intermitent check engine light.
Where I live Brookline,MA , Autozone will run a free diagnostic on your car by hooking up to your ECU and will give you the trouble codes and possible remidies. Of course there are no guarentee's but it will point you in the right direction.
Posted on Jun 18, 2009
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