need some help with low/no idle 2.0 DJET |
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need some help with low/no idle 2.0 DJET |
TravisNeff |
Aug 2 2009, 03:28 PM
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#1
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914 Guru Group: Members Posts: 5,082 Joined: 20-March 03 From: Mesa, AZ Member No.: 447 Region Association: Southwest Region |
I just replaced my 1.7 with a 73 2.0 that has been sitting for a few years. I got it up and running yesterday but it won't idle, maybe at 200rpm's. adjusting idle speed has little effect. The engine revs easily and comes back to idle quickly.
I have all matching FI components, no vacuum leaks that I can tell. double checked my vacuum hose routing per pelican's diagram ECU idle mixture is set between factory mark and full rich (doesn't seem to make any difference other than smelling more fuel out of the exhaust) Valves adjusted and timing set. Fuel pressure is just about 30psi. I am pulling about 20hg at 1000rpm. The only issue I have is some popping once every minute or so out of the exhaust when letting the engine run about 2500rpm for a while. |
r_towle |
Aug 2 2009, 03:32 PM
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#2
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Custom Member Group: Members Posts: 24,588 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Check out your distributor and advance plates.
Make sure the advance plates move freely. Replace the distributor with the one from the 1.7 that you know works. Check you dwell again...48-52...to low a number will affect idle. Remove all hoses from the intake and block them. Only attach the MPS. Check the TPS setting...use the picture below for reference...your TPS may be different. They key is that there is an idle circuit in the ECU that is activated by the position of the TPS at Idle...look at the middle contact...there is a unique spot on each TPS that does the same thing. Rich Attached image(s) |
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