tonylandy123
Member
- Posts
- 30
freelander 2 2.2 td4 hick up miss at 2000rpm some time less
Changed cam and crank sensors no faults when plugged in only egr flow but that's blanked offHiccups or misfiring can often be put down to the crankshaft speed sensor failing. Regular misfiring, particularly under load is normally an injector on the way out.
Cam sensors never fails, and wouldn't be responsible for misfiring as they're only used at startup. Crank speed sensor is normally the cause of missing, but seldom shows on a diagnostic unit it fails completely.Changed cam and crank sensors no faults when plugged in only egr flow but that's blanked off
Both botch plus new one felCam sensors never fails, and wouldn't be responsible for misfiring as they're only used at startup. Crank speed sensor is normally the cause of missing, but seldom shows on a diagnostic unit it fails completely.
What make was the replacement speed sensor? There have been instances of cheap sensors being worse than failing OE sensors. The plug can also suffer bad connections, where the pins have splayed. I've had to replace the plug, as it wasn't connecting correctly, causing sensors to fail very quickly. I've had no issues since fitting a replacement plug and new OE sensor.
Injectors can also cause misfiring, particularly after they've done 100 to 120k miles.
Both are bosch plus new ome fuel filter checked wires on loom and plug look fine is there a easy way to check injector with out removing themCam sensors never fails, and wouldn't be responsible for misfiring as they're only used at startup. Crank speed sensor is normally the cause of missing, but seldom shows on a diagnostic unit it fails completely.
What make was the replacement speed sensor? There have been instances of cheap sensors being worse than failing OE sensors. The plug can also suffer bad connections, where the pins have splayed. I've had to replace the plug, as it wasn't connecting correctly, causing sensors to fail very quickly. I've had no issues since fitting a replacement plug and new OE sensor.
Injectors can also cause misfiring, particularly after they've done 100 to 120k miles.
How mutch were they ill have a look see if can get some before I go down the road of taking them out and getting testedUnfortunately the ECM doesn't output injector compensation values for injectors, so it's difficult to tell which one if any are misbehaving.
I ended up swapping them out one at a time until the faulty one was found. I eventually decided to simply replace them with new ones though, as I needed the vehicle to be reliable.
Initially I bought a working set from a scrap engine to prove one of mine was faulty. I drove it for about a month with those without a misfire, so it proved there wasn't another issue.How mutch were they ill have a look see if can get some before I go down the road of taking them out and getting tested
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