Questions tagged [ecotec]

General Motors trademark referring to a series of emissions technologies that were implemented into a range of engines produced for GM vehicles. These are both gasoline (petrol) and diesel engines. ECOTEC equates to "Emissions Control Optimization TEChnology".

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engine mount bolt torque (Ecotec)

('07 Cobalt LS, 2.2 L) Re the passenger side engine mounts, ... The Alldata manual (AIUI, from Helm) says Tighten the engine mount to body nuts to 66 N.m (49 lb ft). Tighten the engine mount to ...
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63 views

Water pump mounting bolt feels wrong. (Ecotec)

('07 Cobalt LS, vanilla 2.2, 70K mile) Putting the timing chain cover back on. [1] One bolt goes through the cover into the water pump. Initially, it threads OK (not cross-threaded); But, when I get ...
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230 views

replace engine chain sprockets?

'07 Cobalt, 70K miles I need to replace the water pump, and possibly the timing chain. (The Cobalt pump is on a separate chain, with the balance shafts.) I can get parts with or without sprockets. ...
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2014 Chevy Impala Oil Sensor Location (P055b Engine oil pressure sensor/switch B - circuit range/performance)

My 2014 Impala LS (2.5L Ecotec) is throwing an OBDII code for P055b. Immediately checked oil level with dipstick, all is fine there. I'm assuming that the sensor/switch (whichever it is) has simply ...
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Running rough in the cold 03 cavalier

I have a 2003 cavalier with the 2.2L ecotec. In the cold weather it runs terribly and doesn't get better even when engine has been warmed up. The engine will shudder when I give it gas from a low rpm ...
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Any stable alternatives for Z22YH (GM Ecotec GDI engine) high pressure fuel pump?

the main problem with these pumps (part number 815049) are: 1. Expensive: about 400€ for a new one, very hard to find a working old one. 2. Membranes: the membranes used in these pumps get broken ...
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1answer
3k views

Block flatness tolerance?

2006 Solstice (says hello). The engine overheated for some reason, going from ~200F to ~300F in a matter of seconds. (Actually, the gauge changed directly from 203F to 298F.) The head is over at the ...
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3k views

2004 Saturn ION with Ecotec 2.2: Engine misfire with code P0300, ICM problem?

Car came in with a misfire complaint and check engine light on with code p0300. Looking at misfire history confirms high misfire counts on cylinders 1 and 4 along with lower counts on cylinders 2 &...
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1answer
19k views

What is Opel/Vauxhall's TwinPort Technology?

Some Opel Engines come with something called TwinPort Technology. I guess that this increases power, as the original Z12XE (1.2) engine has 55kW, and the TwinPort (Z12XEP) version engine has 59kW of ...
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2.2 ecotec on 2008 Cobalt - Timing chain tensioner will not come out of head

Asked this on a message board, no luck. Got an odd one for you here. My mom's Cobalt started having the notorious ticking around 100k. Went and installed a new timing chain tensioner. I misread the ...
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Malibu turns over, does not start

2005 Malibu (Classic, fleet version) with 2.2 L Ecotec four-cylinder engine fails to start. It turns over, and scattered weak pops indicate that there’s rudimentary combustion going on, but it does ...