97 D1 stalls out

boxster

Well-known member
Jun 1, 2009
443
88
Fallbrook Ca.
My D1 has 305k Miles also has intermittent ignition cut out, with a code P0102, cleaned MAF correctly, checked wiring and vacuum leaks looks ok, also read in the posts that VSS could produce this symptom while driving. I replaced the sensor however problem still there. I also read that faulty fuel pump relay is a pontential. Test drive showed no recurring codes however left stopped for two hours went to re start and noticed black smoke then stall and hesitation then smoothed out. Ran well for another hour then stopped went restart idled and then shut off. Going to try relays never been changed see if it’s that simple! Any ideas are always appreciated!Boxster
 
Last edited:

p m

Administrator
Staff member
Apr 19, 2004
15,617
838
58
La Jolla, CA
www.3rj.org
P0102 is low signal from MAF sensor. You need to either verify it with any OBD-2 live data scanner, or substitute a known-good sensor. For whatever it's worth - here's a new MAF sensor for forty bucks.


It can be an issue with wiring as well - if a known-good sensor still produces the same results, you need to look in the harness all the way to the ECU connector. "Looks good" may be insufficient.

You can check the fuel rail pressure using the Schrader valve on the passenger side of the fuel rail - you can either make your tester using some 1/8" NPT hardware and a pressure gauge, or buy a kit on Amazon.
It won't help you to troubleshoot an intermittent loss of power at the pump - so you need to dig in and clean up the contacts on the pump connector itself and in the harness connector somewhere near the right rear wheelwell (that one is rarely touched, but it is exposed to moisture and dirt).
 

XCELLER8

Well-known member
Sep 21, 2009
249
12
Is there something emissions related? Or the EVAP system?

a couple of possibiliies

the advanced evap models have a trouble prone fuel tank pressure sensor..( mounted to the fuel pump assy)...this pain in the ass device shares its wiring with the TPS and IACV ....which tends to really mess with the fuel / air mixture when it fails, and doesnt necessarrily give a good "code". several of us have had this happen, and while it may not be your issue it may be worth checking on >>you can try unplugging the sensor at the top of the fuel pump assy...

also unhook the battery and then remove the ECU it's also common to find that water has gotten into the ecu and is shorting out any number of things....and causing an intermittent stall.....personal experience
 

boxster

Well-known member
Jun 1, 2009
443
88
Fallbrook Ca.
Stall out solved! Replaced MAF with new unit, cleared p0102 code, cold start perfect,test drove no stall out, hot restart no problem, all is well. ����