Q: engine wont restart when hot, no spark P0340 has 12v on both connectors, freq from 5-11hz when cranking

asked by on

1999 pathfinder 130000 miles starts fine when its cooled down, can drive for hours with no problem as long as it not turned off. When trying to restart when hot, it cranks,but has no spark. If I keep cranking I get error P0340 and knock sensor. Knock is from un burned gas from trying to start when hot. I Have 12 volts on 2 wire connector and 12v on 6 wire connector to distributor. On circuit 1 signal from pcm it varies from 5hz to 11hz, 2nd wire from left has good ground as is the other ground, The distributor has been replaced because the original had rusted, at first thought it was bad new distributor so bought another but has the same problem. I took it to a shop, they said it was the timing, then said the harmonic balancer slipped and adjusted timing the best they could. right out of the shop had the same problem, wont start when hot, I have taken apart all wire connectors and cleaned with contact cleaner, makes no difference, any ideas?

My car has 130000 miles.
My car has an automatic transmission.

Since the crank position sensor gets its timing signal off the damper, I would first replace the damper to be sure timing was correct. The fact that this failure occurs after a "heat soak" cycle, and the P0340 code is a cam position sensor error, I would be suspicious of both the crank and cam position sensors. If the crank position sensor is dead, and the ECM is defaulting to the cam position sensor, problems with incorrect timing will be more acute. I would recommend having a car is not starting service completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose this problem, get an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. engine wont restart when hot, no spark P0340 has 12v on both connectors, freq from 5-11hz when cranking

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Steering wheel will pull to the right after pressing down on the accelerator.

Hi there. There are two items in particular that will typically cause this problem after having a suspension alignment. The first is known as a radial pull - caused by a tire that has a slipped radial belt inside the...

Q: Takes 3-7 tries before engine stays running

Hello. The symptoms you are experiencing, hard starting and an unstable idle speed, can be caused by a variety of issues. You mention that you replaced a few parts, namely ignition components, so they should be alright. The next things...

Q: Starter? Battery connection? Something else?

Hi, thanks for writing in. Based on your situation, I would say your starter is fine, but your battery is bad. Cold Cranking Amps (CCAs) are what you use to start your car. They cannot be tested and they can't...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.