The manual lists that the resistance should be between 1.16 and 1.36 ohms. currently it is at 2.0 ohms. what would this cause the motor to do. Right now I am experiencing some driveability issues and am trying to troubleshoot the problem. The motor was rebuilt about 8000 miles ago. within the past 2 weeks I have replaced the fuel pump, fuel filter, coolant temp sensor, distributer, map sensor and also checked and reset the timing. The truck falls on its nose when accelerating while the engine is cold and tends to idle pretty rough. Once the engine has warmed up it runs and idles great and I can drive it anywhere. It does not display any diagnostic codes and I had a shop check the ECM/PCM to verify it is operating properly. Lately I have also noticed a strong fuel odor in the exhaust. Would the increased resistance cause any of these issues? If not what would cause this?
Any help is appreciated!!
2006-11-16 04:54:14 · 4 answers · asked by Jolaine L 2 in Cars & Transportation ➔ Car Makes ➔ Other - Car Makes
The increased resistance means that the components aren't getting the current they need to operate. The acceleration issue could definately be caused by a higher resistance in the fuel injector.
If you are smelling a strong fuel odor in the exhaust, you might want to check your spark plugs and the air/fuel ratio.
2006-11-16 05:01:28 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Excessive resistance results in decreased current flow (amperage). Decreased durrent flow in an injector could result in the injector not opening correctly or for the proper duration. A reduction in the amount fo fuel delivered would be expected.
Before you replace the injector, check the resistance of the other 3 injectors for comparison. (Your'e using a DVOM right?) Then check the injector's pins for corrision which would cause excess resistance.
2006-11-16 05:04:32 · answer #2 · answered by cranknbank9 4 · 0⤊ 0⤋
temperature of electrical components has a effect on resistance values. Some injectors will ck good when cold and be out of range when at operating temp.have seen this before many times.Its best to have a high quality meter when checking these components.
2006-11-16 06:07:47 · answer #3 · answered by deltech 4 · 0⤊ 0⤋
If they all measure the same, I would call them good.
Trying to measure 1 ohm with a regular meter is not a preferred method. One really has to use a milliohm meter to see resistances that small.
2006-11-16 04:57:53 · answer #4 · answered by Anonymous · 0⤊ 0⤋