Question about 1996 Pontiac Grand Am
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Posted on Jan 02, 2017
P2181 is a overheating engine.
Bad fan themoswitch, temp sensor themostat water pump impeller fan motor or fuse on battery
check to see if fans work by turning on Air Conditioner (fans should run with A/C on). Turn A/C off, warm engine, check to see if fans come on, if they do NOT it may be thermo switch on radiator on lower left side, has 3 wire plug, takes 1-1/8" wrench/socket to remove. This thermo switch controls fans when temp reaches 195F, if fans do not come on at engine temp 190-195F try replace switch VW part number: 1J0-959--481-A You can verify if the switch is bad by shorting wire 1 and 2 (fans should come on when jumpered).
Posted on Oct 26, 2008
Do you have a manual boost controller (mbc) installed? I have a 96 WRX and had the same problem and so took out the MBC. It now runs sweet. If you don't have one check the vacuum hoses from the turbo to the wastegate and also to the boost control solenoid, make sure they are tightened with cable ties or a hose clamp. Also could be your spark plugs make sure you have iridium ones, they out perform any others.
Posted on Dec 17, 2008
SOURCE: 2001 audi a4 1.8 random misfire
Have you changed the coils at each misfing cylinder? I had a misfire on cylinder 3, running really rough with flashing check engine light when engine was warm. The Check Engine light did come on solid after the misfire cleared. Swapped the coil with another cylinder and the misfire code followed the coil, so I replaced the suspect coil with a known good one. Voila, problem solved. My vehicle is a 2001 Jetta 1.8t, and from what I've read on the internet, failing coils is a very common problem. Good luck.
Posted on Jun 25, 2009
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