Conflict
Member
- Joined
- Dec 18, 2019
- Messages
- 5
- Reaction score
- 2
- Location
- sc
- Vehicle Year
- 2001
- Make / Model
- mazda b2500
- Transmission
- Manual
I've read everything related. Successful solutions have been throttle plate adjustment bad, dpfe bad, iac bad, dirty idle passageway, maf bad, egr bad, and high voltage. I haven't seen anyone admit to a vacuum leak, bad pcv, or dirty throttle plate being the issue. Coolant temperature is also a usual suspect, I've heard. I'll be trying a new dpfe tomorrow. Mine doesn't respond to vacuum being applied. But it seems like too much egr would lower idle, not increase it, which is my problem. So I'm not hopeful. I've shut off all vacuum inputs to intake (other than egr) while running with no effect. I completely blocked off the IAC passageway. Still high idle. TPS output is 1 to 4.2V with 600-850 ohms smooth operation. 5.9 Vref. EGR audibly responds to vacuum applied. I haven't actually watched the valve function. It's a nightmare disconnecting the EGR vlv beause it doesn't align with the throttle body and I have to battle that hard tube to get the bolts in. If anyone knows a trick to that, please let me know.
When I first start up, my idle will come down to 1200 after a few minutes but after I start driving, it's 1500 to 2000. My old scan tool says my TPS is 20.7 at idle and 41 giving a little gas. I don't know the units. MAF goes from 7.7 to 31, tracking with TPS changes. Coolant and intake air temp are accurate. Advance is 12 to 26. Short term is -3.4 to 8.5. Long term is .7 to 4. O2 sensors are .08 to 8 and .08 to .9 for 11 and 12 respectively. Those numbers don't mean anything to me but the fact that they change implies they're good, right? If any or all of this way off base, please let me know. I don't want to go to a mechanic, they have expensive lifestyles to support.
When I first start up, my idle will come down to 1200 after a few minutes but after I start driving, it's 1500 to 2000. My old scan tool says my TPS is 20.7 at idle and 41 giving a little gas. I don't know the units. MAF goes from 7.7 to 31, tracking with TPS changes. Coolant and intake air temp are accurate. Advance is 12 to 26. Short term is -3.4 to 8.5. Long term is .7 to 4. O2 sensors are .08 to 8 and .08 to .9 for 11 and 12 respectively. Those numbers don't mean anything to me but the fact that they change implies they're good, right? If any or all of this way off base, please let me know. I don't want to go to a mechanic, they have expensive lifestyles to support.