My 1994 V-10 Dodge Ram 3500 occasionally dies while driving at around 35-40 mph. And when it dies it starts right back up. I got fault codes 25, and 35 (Idle air control motor circuits, and Radiator Fan low speed relay circuit). Will a faulty idle air control motor cause an engine to die?
2006-12-15 17:24:18 · 3 answers · asked by John 1 in Cars & Transportation ➔ Maintenance & Repairs
Not likely. If the engine is running anything OFF idle, the Idle control may have a slight impact on the speed, but the throttle is high enough at this point to not be relying on the idle circuit.
If the only codes you got were for the Idle (25) and Fan (35), it may be time for some "live data" diagnostics with a scanner.
If yo don't have access to one (NOT a code reader, but a SCANNER) you are most likely going to be visiting a repair shop that does. Ask for the diagnostic routine, and with the results you can repair the problem, or let the pro do it while you are there.
Good Luck and Merry Christmas
2006-12-15 17:41:02 · answer #1 · answered by Ironhand 6 · 0⤊ 0⤋
Unless your A I S motor {air idle speed [thats mechanic lingo]} is severally damaged or extremely dirty [carboned up] than most likely not. It sounds like a ground problem. If I was a betting man, I wood check the trucks repair history. The intake manifolds on the v-10 are known to leak a little oil at the rear of the engine. Since the engine is very long the rear of the engine is partly covered by the firewall making the repair difficult. You have to completly dismantle the top of the motor. A young or an unexpericenced tech could easily have left a connector unhooked or pulled to hard on a wiring harness. Maybe at the A I S motor or around the distributer. What ever you do do not move or turn the distributer because they have to be indexed. Could maybe be as simple as a ground wire damaged or unhooked. There should be one or two places where grounds are hooked up. If you do this your self be sure and get a repair manual and always unhook your ground at the battery before any repair is done. Also be sure and service your battery [clean post and clamps] with wd-40. Good luck Scrup
2006-12-15 18:01:10 · answer #2 · answered by scrup 2 · 0⤊ 0⤋
On the US version MBz cars there is an IDLE SPEED ADJUSTMENT screw just under the left side of the air cleaner when standing in front of the car. I assume you are talking about a gasoline powered MBz c200. Adjustment s/b done when the engine is warm and the transmission in neutral.
2016-05-22 22:48:17 · answer #3 · answered by Anonymous · 0⤊ 0⤋