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Old 11-08-2017, 11:37 PM   #1
Han-Tyumi
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Default 1987 740 Turbo - Intermittent hiccup??

Today my car started getting super boggy out of nowhere. I did the distributor seal, cap and rotor, plugs and wires on Sunday. It has been running better than ever til this morning. I got to work and I wasn't scheduled to be there for 3 more hours so I headed back home and suddenly it started hiccuping. It would bog out for one second, backfire, almost die etc. I looked at all my wire leads and both ends of the wire from the coil were almost popped off, so I pushed them back on and it ran a lot better. Now during idle it occasionally stops firing for like half a second. Under acceleration it will sometimes do the same thing but in a faster sequence. It's only sometimes


wat do
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Old 11-09-2017, 07:40 AM   #2
John242Ti
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How's the wiring harness? Also, sometimes the wiring at the ignition coil can get toasty on the 1985-87 turbo cars, which can cause weird issues like this...

-J
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Old 11-09-2017, 10:17 AM   #3
Han-Tyumi
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The car has 85k miles.. However, I went big turbo and 2.5" exhaust. It does get pretty toasty. 3 of the zip clips on the firewall that hold the harness up are broken and its causing it to sit on the distributor cap
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Old 11-09-2017, 08:37 PM   #4
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Old 11-10-2017, 01:53 AM   #5
John242Ti
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Mileage usually is notwithstanding when it comes to the wiring harness. I'd still make sure that it's intact and, ideally, replaced with a newer loom.

-J
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Old 11-10-2017, 03:18 PM   #6
Han-Tyumi
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Quote:
Originally Posted by John242Ti View Post
Mileage usually is notwithstanding when it comes to the wiring harness. I'd still make sure that it's intact and, ideally, replaced with a newer loom.

-J
It's all good. No cracks or weak spots. Connections all good. In fact, when I got it from Japan it had dielectric grease on lots of the connections
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