

| Subject: | Re: Idle problem/digitool readings |
| From: | Mike Miller |
| Date: | Sat, 19 Jul 2003 22:08:22 -0700 |
The engine's a 2.1 but all the FI and electrics are 1.9, '85. The TP light never comes on. I'll check the fuel pressure as soon as I can get the adaptors for my gauge, and then the rest of the stuff. Dumb van. Thanks, Mike On 7/19/03 5:52 PM, "Chuck Mathis" <cmathis@houston.rr.com> wrote: > Mike, > > On my '85 the FP (fuel pump) light stays steady and the FI (fuel injectors) > light does flicker -- so fast at anything above idle that it appears steady. > What is the TP (throttle position switch) light doing? It should be on at > idle, go off as soon as you give it gas and come back on at full throttle. > The readings you are seeing look pretty close to normal except that the AFM > at idle when the engine is warm seems a little high. That can be explained > by your 1200-1400 rpm idle though. > > Are you working with a 1.9 or 2.1? Some things I would look at on my 1.9 if > it were doing what yours is are the fuel pump relay in the black box above > the coil, the fuel pump itself, idle stabilizer, and the throttle position > switch. I'd start with the fuel pump related issues because that light > should stay steady when the engine is running. > > Chuck > '85 Wolfsburg Westy - 'Roland the Road Buffalo' > > on 7/19/03 1:48 PM, Automatic digest processor at LISTSERV@GERRY.VANAGON.COM > wrote: > >> Date: Sat, 19 Jul 2003 11:46:27 -0700 >> From: Mike Miller <mwmiller@CWNET.COM> >> Subject: Idle problem/digitool readings >> >> Volks, >> >> Problem: Van wouldn't hold idle, drops to 400 or so and sometimes dies, >> usually dies if AC on >> >> Things done: Tune up, plugs, distributor cap/rotor, air filter etc. >> started from scratch with idle per Bentley. >> >> results: Couldn't get a stable idle at 1000 or so. Engine would drop to >> 400 or so when the idle approached 1000. Idle stable at 12-1400 >> >> >> >> Put in different ECU with digitool. Ran ok with AC on or off, idle set at >> 12-1400. >> >> EXCEPT misses like crazy at around 3000 in any gear. >> >> Digitool readings: >> >> Cold engine No AC on >> >> Temp 1.7,7 temp 2 .67, O2 .41, AFM 1.92 Batt 13.14 >> Well finally got the digitool hooked up >> >> Cold with AC on the F1 light flickers other readings the same >> >> Hot engine: >> >> AC on >> >> FP light flickers, FP light on >> >> Temp 1 .61, temp 2 .07, O2 .10-.77, AFM 1.57-1.81, Batt 12.57 >> >> AC off >> >> FP light flickers >> >> Temp 1 .49, Temp 2 .07, O2 .18-.67, AFM 1.84, Batt 12.88 >> >> Driving >> >> FP light on >> >> Any of this information mean anything to anyone? >> >> Mike > > >
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