10 Apr 08, 08:43 am
Start runs no load:
Moisture in the Dist cap. Use WD-40 and clean the cap with it.
Fuel Pressure/volume.
load sensor (MAF sensor). On most vehicles, you can remove the connector to the MAF and it will usually die, but restart and run poorly. If it doesn't stall upon higher rpm, then the MAF is suspect. Check the output (signal) voltage for a nice steady increase as load (not preportionate to the rpm but to load) increases.
In that order, no discussion.
Then, pull one wire. Idle vehicle with a spark checker on that wire. As you accelerate the engine, does the spark stop? If it doesn't your on to fuel control issues (PCM and sensors)
The TPS is an anticipator for the fuel system, it can cause a bog, but can rarely causes a stall unless the vehicle is driving (VSS sensor is reading more than 1 mph), not where I would go first, pretty much it's load sensor timing sensor(s) or fuel delivery.
Moisture in the Dist cap. Use WD-40 and clean the cap with it.
Fuel Pressure/volume.
load sensor (MAF sensor). On most vehicles, you can remove the connector to the MAF and it will usually die, but restart and run poorly. If it doesn't stall upon higher rpm, then the MAF is suspect. Check the output (signal) voltage for a nice steady increase as load (not preportionate to the rpm but to load) increases.
In that order, no discussion.
Then, pull one wire. Idle vehicle with a spark checker on that wire. As you accelerate the engine, does the spark stop? If it doesn't your on to fuel control issues (PCM and sensors)
The TPS is an anticipator for the fuel system, it can cause a bog, but can rarely causes a stall unless the vehicle is driving (VSS sensor is reading more than 1 mph), not where I would go first, pretty much it's load sensor timing sensor(s) or fuel delivery.