Using cutting edge equipment, we are able to competently diagnose and repair vehicles using non-intrusive testing, which is paramount for wiring integrity.
Base Engine Problem
In this screen capture we prove that the cam timing is off on a BMW. Without these methods, it would require disassembly of the engine to determine this problem.
Ford Escape No Power
This capture is from a Ford Escape which had a lack of power at low rpm. The vehicle came to us from another shop after they had repalced a number of parts in an attempt to repair the problem. This scope pattern proved the problem to be in the base timing. Once it was taken apart the timing chain was found to have slipped due to a gear failure.
5.4 Ford Vacuum Leak
This Ford Van came to us with a Check Engine light on, rough idle, no power condition. Scna testing revealed codes for lean conditions on both banks. We went to the smoke machine and found the PCV hose to be leaking under the throttle body.
Here we test the crankshaft and camshaft correlation.
BMW Intermittent AC
This BMW X5 came in with a complaint that the AC would blow cold for a few minutes and then get warm. We first measured the amount of freon in the vehicle to confirm it is full. Then we turned on the AC and saw that the condensor fan was not running. The video shows how we tested the circuit and fan motor to confirm it is a faulty fan causing the problem.
Codes and Testing
This vehicle is a good lesson on how easily your vehicle can be misdiagnosed.
Though he modern systems are very good at picking up faults, the codes they set
may have nothing to do with the root cause of the problem. This Lincoln LS
arrived with a complaint of a Check Engine light on and no power to accelerate.
The codes in the picture were all this vehicle gave us to work with. So, when we
look at them, we begin to think right away about faulty O2 sensors, a vacuum
leak, a fuel supply problem, among other possibilities. Many vehicles have come
to us with issues like this after going to another shop first. Usually at that
point a lot of money was spent replacing parts that were not needed to repair
the vehicle. In this case, we started with checking simple things first. Fuel
pressure, Smoke test for vacuum leaks, things that could cause these codes to
show up. None of these tests equated to finding the trouble. Now we went back to
data stream and found that the MAF sensor was working just fine too. We then
realized that the ECM could be substituting a value for a faulty MAF sensor and
we would never see it on the data. A further test of the sensor proved this to
be the case. We replaced the sensor and everything was right with this vehicle.
We cleared the codes, performed a running test on it, and then test drove it.
I just wanted to share this to show how very easy it would have been to throw
parts at a vehicle based only on trouble codes when it will not fix the problem. We all get fooled sometimes, but for an inexperienced technician, this scenario could be a nightmare. See you at the shop!
Here is an example of how we use a scope to test a fuel injector. Monitoring the injector trigger (red trace), it shows a correct pattern, but looking at the blue trace, which is monitoring the amperage, we can clearly see that this injector is shorting.
This is a 1999 Buick Park Avenue 3800 with a supercharger. The vehicle was in for brakes and some other service work. The customer asked us to check the rattle coming from the engine compartment at idle. After removing the nosecone on the supercharger, you can easily see how worn out the coupler is. This part should have no play, just as the new one we installed.