 Hard starting, low hunting idle, until it warms up? |
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| Geezer914 |
 May 27 2017, 09:30 AM
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#1
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Geezer914  Group: Members Posts: 1,460 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States 
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1975 1.8L Ljet injection. Car is hard to start. It takes 3-4 tries and some time a shot of starting fluid. Fuel pressure gauge reads 30 lbs. in engine compartment. The rpm rises to 1800 rpm for about 15 seconds, then the idle hunts between 500 rpm and almost stalling out. After the engine warms up it runs and starts as normal. Vacuum hoses are tight. Comments? (IMG:style_emoticons/default/confused24.gif)
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| Geezer914 |
Jun 1 2017, 05:44 AM
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#2
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Geezer914 Group: Members Posts: 1,460 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States
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I checked the connection from the AFM to the dual relay circuit 1-36 and 4-39 shows continuity. Checked ECU to the CHT #13 to 5, 16 and 17 and they all read 2691k at 63 degrees. The engine needs a shot of starting fluid to start. It goes to 1800 rpm for about 20 seconds then drops to 0. It will restart with no problem, but I need to keep my foot on the gas to keep it running.
Could he flap in the AFM be sticking and not keep the fuel pump running? Something is not keeping the fuel pump running once it starts so it will idle. What would cause it to need a shot of starting fluid for the initial start up? |
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Posts in this topic
Geezer914 Hard starting, low hunting idle, until it warms up? May 27 2017, 09:30 AM
The Cabinetmaker Aar? May 27 2017, 09:36 AM Beebo Kanelle Gasoline filter will allow pressure to build, but ... May 27 2017, 09:50 AM Rob-O So much to test for, but in my opinion (and I just... May 27 2017, 12:31 PM The Cabinetmaker If the cht is unplugged, it goes full rich. Not hi... May 27 2017, 02:40 PM Geezer914 Checked the AAR regulator with an ohm meter and it... May 28 2017, 12:39 PM
timothy_nd28
Checked the AAR regulator with an ohm meter and i... May 31 2017, 01:34 PM jim_hoyland I've found the same condition on occasion too:... May 29 2017, 06:00 AM Geezer914 Installed new intake runner gaskets, intake hoses,... May 31 2017, 12:10 PM jim_hoyland
Installed new intake runner gaskets, intake hoses... May 31 2017, 12:38 PM Geezer914 Head temp spec is 2500 to 3000 when cold. Correct... May 31 2017, 05:10 PM timothy_nd28 280k ohms > 2.5-3.0k ohms, still out of spec. ... May 31 2017, 06:15 PM Geezer914 Tested AFM:
pins 6 & 9 200-400 ohms 282
pi... Jun 1 2017, 06:42 AM timothy_nd28 I don't think there is anything majorly wrong ... Jun 1 2017, 10:22 AM Geezer914 Thanks everyone for taking the time to post replie... Jun 2 2017, 05:52 AM porschetub I don't usually comment on running faults with... Jun 2 2017, 02:43 PM |
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