Question about 1997 Oldsmobile Eighty Eight

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Car wont start checked all relay s, sensors ,plugs

If i punch a whole in the converter will it damage the car

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What, Exhaust Converter? What kind of question is that? It will damage the converter,maybe. Are you trying to check for a blocked converter? Disconect the pipe at the engine,or use the O2 Sensor hole, to install the proper gauge,and hope it runs long enough to test

Posted on May 06, 2010

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Dtc po340 wont start put in new cam sensor still just cranks 42lbs fuel pressure at shrader valve has spark at plugs only code was po340 help


P0340 - Camshaft Position (CMP) Sensor Circuit Malfunction ,did you check the wiring ?
P0340 - Camshaft Position (CMP) Sensor Circuit Malfunction The test fails when the PCM can no longer detect the signal from the CMP sensor.
  • CMP circuit open
  • CMP circuit short to GND
  • CMP circuit short to PWR
  • SIG RTN open (VR sensor)
  • CMP GND open (Hall effect sensor)
  • CMP misinstalled (Hall effect sensor)
  • Damaged CMP sensor shielding
  • Damaged CMP sensor
  • Damaged PCM
Harness routing, harness alterations, improper shielding, or electrical interference from other improperly functioning systems may have intermittent impact on the CMP signal. DR1 DTC P0340: CHECK IF ENGINE WILL START
    Note: Refer to the Pinpoint Test Schematic to determine the type of CMP sensor.
  • Start engine.
Will the engine start? Yes No GO to DR2 . DTC P0340 is not the cause of the No Start. GO to Section 3 to diagnose the No Start symptom. Is the PCM firing the injectors ?
  • Starting Concerns:
    • No Start, Normal Crank
Note: Extended cranking because of a no start can load the exhaust system with raw fuel, damaging the catalytic converter after the engine starts. For applications with Secondary Air Injection (AIR) Systems, perform the following after the no start has been repaired: Disconnect the electric secondary air injection (AIR) solid state relay, run the engine until the surplus fuel is used up, and reconnect the relay (disconnecting the relay may set a Continuous Memory PCM DTC that will need to be cleared).


SYSTEM/COMPONENT REFERENCE (Section 5 Pinpoint Test unless noted)
  • Add-on Anti-Theft Devices
  • Visual, check with customer.
  • Fuel/Ignition
  • For LS6/LS8:
  • GO to KB85 .
  • All others:
  • GO to A1 .
  • If engine is now a no start:
  • If engine will start and run normally at part throttle, check Idle Air Control (IAC) System.
  • Engine will now start and run normally at part throttle:
  • GO to KE2
  • Exhaust System (restrictions)
  • GO to HF1
  • Base Engine
  • Engine System - General Information Section 303-00 of the Workshop Manual.
  • Additional Testing
  • GO to Z1

Oct 19, 2015 | 1998 Ford Escort

2 Answers

I have a 2003 Saab 9-3 Turbo convertible, I have replaced the coil pack, the battery, starter, fuel pump, crankshaft position sensor, spark plugs & more, the engine cranks like nobodys busines


did you check for voltage at the coil pack low tension input
this comes from the electronic ignition and the distributer dc setting on a multimeter

check inside the distributer that the little magnet is still in place on the rotor and that the sensor is outputing pulses as it turns over
{you can use a meter set to AC range for this ...}
pull a plug out and place its metal to ground check for actual sparks
if this is there then its fuel ...

Dec 05, 2014 | 2003 Saab 9-3

1 Answer

What would make my car cut while driving and restart almost immediately when i engage the starter?


Given all the electronic sensors an engine computer an such ,I wouldn't think it would be spark plug's . Bad spark plug's would cause a engine misfire , which would cause the check engine light to come on steady or flashing . When flashing means it could be causing your catalytic converter damage. No I would suspect a sensor is going bad . crank , cam , mass air flow or maybe a main EFI relay . With out test it wouldn't be a good idea to just start replacing parts. That would get expensive , your best bet would be to take your vehicle to a qualified repair shop .

Jul 31, 2014 | 2002 Toyota Camry

2 Answers

P 0430 & p0420 catalyst system


here are some solutions to your codes and possible causes, maybe you have seen these pages already. when you say the converters are punched out, does that mean there are holes in them? a scan tool does not cause trouble codes, it detects them.

http://www.obd-codes.com/p0440
http://www.obd-codes.com/p0420
http://www.obd-codes.com/p0430

Nov 18, 2013 | 1998 GMC Sierra

1 Answer

Car will start and run, then when I shut it off it wont start back up after sitting for a half hr of so


Check the catalytic converter it is probably plugged and not allowing fuel into the cyl. due to putting back pressure on the engine. If possible pull the 02 sensor out of the exhaust ahead of the catalytic converter and if it is plugged you should have the car to run. It will run rough but if it starts it is the problem.

May 28, 2017 | 1989 Chevrolet Celebrity

1 Answer

2002 Ford Explorer losing power


Blocked exhaust converter or fuel filter

Test the TPS Sensor & Output Speed Sensor

Test--NOT Replace

Mar 08, 2013 | 2002 Ford Explorer

1 Answer

Fuel pump comes on but makes ccrm tick and wont start 94ford taurus


Sure.
You should check to see if you have spark at the plugs then check fuel pressure.
Could also be the EEC relay or other components.

Aug 25, 2012 | 1994 Ford Taurus

1 Answer

1993 Dodge Dakota 5.2 318 4x4, turns over, but no spark. Cat converter shot, removed. Plugs, cap, rotor replaced. MAP sensor recently replaced...will start and run once in a great while.


Try switching the ASD Relay for another relay in the Fuse Box in the Engine Compartment. If the ASD Relay fails it cancels the power to the Hall Effect & Fuel Pump.
If that doesn't change anything, check the wiring harness that travels down the left wheelwell for damage, It actually goes outside of the engine compartment, into the wheelwell where it can be damaged by rocks, road debris or a tire (if you've flexed the suspension, or had the truck off road). If the wiring there checks out, it leaves one other thing.
The Hall Effect Sensor inside the Distributor.

Aug 23, 2011 | 1993 Dodge Dakota

3 Answers

Ok replaced the intake manifold , car wont start, checked crank sensor, checked plugs and wires. fuses, fuel injectors ,engnition sensor bad , replaced it coil packs good and still wont start .getting...


or you getting the right fuel pressure? check fluid filter, check pressure regulator, check spark plugs to see if they are soaking wet if they or wet take them all out and pull fuel pump relay out turn engine over and blow all gas out the plug holes. install plugs and relay and try start again , check engine compression, check coolant senor ,check cam sensor

Jul 06, 2011 | 1999 Pontiac Grand Prix

2 Answers

96 intrepid 3.5 litre, wont start


did you check for spark at the plugs. becuase oxygen sensor wont prevent the car from starting. let me know about the spark.

Feb 13, 2009 | 1996 Dodge Intrepid

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