pontiac grand prix wont start. fuel is 56 PSI, no spark
Asked by zervalada Jun 29, 2018 at 01:01 AM about the 2008 Pontiac Grand Prix Base
Question type: Maintenance & Repair
I was driving and suddenly the car shutdown. It cranks but wont start. I check fuel pressure and is 56PSI. I tested for spark and get none. The coils, primary and secondary resistance is within range.
4 Answers
Is the check engine light on?
No, check engine light is not on. About 2 weeks ago I had the catalyst cov. replaced by the dealer with thermostat. Dealer did not see anything else wrong. the Car passed smog a week ago.
yes, all the gauges light up and no check engine light! But I am happy to announce that a mobile mechanic diagnose the issue and diagnostics indicates the Crankshaft sensor is not getting 12 volts, thus the possibility there is no spark. It could also be that the Ignition module is not working. But need to replace the Crankshaft sensor first
Thank you all for your answers. I apologized for not responding sooner. I had a mobile Mechanic come to look at the car. The Crankshaft sensor was bad. And the Igniter module was replaced as well. The car starts now but it seems that there is a disconnect somewhere, since sometimes it starts right away other times it doesn't. a 2nd mechanic did Diag again, and the tool indicated a leak in the Intake manifold and a sensor having issues. So the problem was the crankshaft sensor not getting 12 vlts.
