Question about Pontiac Grand Prix
Any fault code there? I know you stated the Check Engine Light is not on, but have you checked it for stored fault codes anyway? Many fault codes are type B and type C fault codes, which means they can set and not turn the light on. If you do have any, please let me know.
The reason i ask, is that its very common for the Crank Position sensor to fail in the 3.8L engines, especially of that year range. Sometimes, they will set a P0336 fault code, which usually isolates the Crank Sensor, however the lack of that code does not give the crank sensor a clean bill of health. I would still suspect it.
Usually, the best way to spot one, is to watch engine RPM while cranking. Sometimes that works for the Tachometer but some cars, the gauges don't work while cranking, so you may need to watch Engine RPM on the scantool while cranking. If it says 0 (or a number less than 20; sometimes the scanner will show like 4RPM without the car running). So basically no change in RPM from Key-On to cranking leads to a bad crank sensor.
Also, about your low RPM's, its possible that you have any problem with the Torque Converter, first, check level fluids and fine wokr of solenoids.
Tell us news.
Posted on Jul 08, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 15, 2016 | Cars & Trucks
May 05, 2016 | Cars & Trucks
Dec 17, 2015 | 2004 Mitsubishi Lancer
Jan 20, 2015 | Cars & Trucks
Mar 23, 2014 | 2001 GMC Savana Cargo
Mar 30, 2011 | 1991 Nissan Maxima
Mar 27, 2011 | Dodge Stratus Cars & Trucks
Feb 01, 2011 | 2005 Nissan Altima
Mar 27, 2010 | 1987 Pontiac Fiero
May 09, 2009 | 1993 Honda Accord
39 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: