Why won't my car idle right? |
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Why won't my car idle right? |
BPGREER |
Nov 16 2004, 06:36 PM
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#1
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Member Group: Members Posts: 131 Joined: 29-September 04 From: SAN FRANCISCO Member No.: 2,857 |
OK, I'm once again stumped. My car just won't idle smoothly. It sounds like it's going to die, but then revs itself up a bit, then almost stalls again, then revs again... So, I thought it might be a vac leak. I had already replaced all of the hoses, but found that I had leaks on the air intake runner things, where they connect to the plennum. So, I disassembled everything, replaced those hose-type things, and voila! No more vac leak there. Problem is, still not idling right. It's just as bad now as before. One more thing, I slowly brought up the rpms from the throttle body, to listen, and I think I heard a couple of really quiet backfires. Maybe an exhaust leak? Could this cause a bad idle? Thanks.
Brian |
ClayPerrine |
Nov 17 2004, 07:12 AM
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#2
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Life's been good to me so far..... Group: Admin Posts: 15,550 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
QUOTE(ws91420 @ Nov 16 2004, 07:24 PM) The TPS is a varible resistor. Not on a FI system in a 914. The d-jet "tps" is actually a bunch of wiper contacts points that the arm slides across, kinda like a rotary switch. (IMG:http://members.rennlist.com/pbanders/TPS.jpg) The L-Jet system just has two contacts, one closed at idle and one closed at wide open throttle. Remember, the D-Jet system was the first practical electronic fuel injection system ever put on a mass produced car. Bendix developed an Electronic Fuel injection in the late 50s. It actually used Vacuum tubes, and had to be warmed up before the car could be started. |
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