 Low rpm stumble |
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| blitZ |
 Aug 12 2009, 06:40 AM
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#1
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Beer please...  Group: Members Posts: 2,223 Joined: 31-August 05 From: Lawrenceville, GA Member No.: 4,719 Region Association: South East States  |
I had a Crane Optical, which recently died. I have replaced it with a set of points and condensor from my FLAPS (non-Bosch). The car runs fine except for a some stumbling at low rpms. It seems to struggle to get to 1800, then takes off as normal. I've double checked my point gap and timing. Any ideas?
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| r_towle |
Aug 15 2009, 06:07 PM
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#2
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Custom Member Group: Members Posts: 24,705 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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Three things to check and set.
Fuel pressure...get a gauge to test it inline before the pressure regulator. Check when the car is cold, and again when its hot. If it changes when hot and goes down...increase it by turning the bolt on the end of the pressure regulator and set the pressure to 28-32 when hot. Vacuum lines (I get sick of people that claim that this wont affect the car...it does, it does create a low idle issue) Check them and clamp them if you have any potential leaks. If you have the knob on the top of the ECU...where is it set? This is idle enrichment and if its cranked up to the max...you flood at idle. and finally, the TPS It needs to be set in a specific position, no other. It is only adjustable because the switch is used on alot of other cars..volvo, merc etc. So, open the cover, clean the gold contacts with di-electric cleaner and set it like the picture at idle. Rich Attached image(s) 
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Posts in this topic
blitZ Low rpm stumble Aug 12 2009, 06:40 AM
r_towle non-bosch is your first problem, and it can be a b... Aug 12 2009, 08:11 AM blitZ OK, I've replace the points and condensor with... Aug 15 2009, 10:13 AM r_towle FI or carbs?
Rich Aug 15 2009, 10:41 AM blitZ 2.0, Djet Aug 15 2009, 03:22 PM blitZ I've checked the TPS and filed the TPS reports... Aug 19 2009, 04:20 PM
SirAndy
What else can be causing this?
What does your eng... Aug 19 2009, 05:11 PM tod914 Have a coil you can swap out? Just replaced mine ... Aug 19 2009, 04:56 PM |
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