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V6-4.3L

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Truck ac pressure too high after repair
An overcharge of either refrigerant oil or refrigerant can cause excessive system pressures. If the wrong refrigerant oil is installed that might contribute to excessive pressure. Check low side pressure. If low side pressure is too low, while high side...
Question
Door replacement / wire harness
The alignment issues that you are referring to would have to be looked at first hand as there are mechanical and electrical issues involved. It might be fine but it has to be looked at up close. As far as...
Question
Running lean
With the fuel pressure low by 10 psi and leaking down indicates the pump in the tank or the pressure regulator is leaking down pressure. You will need to isolate the pump by blocking return line to see if pressure...
Question
Leak down test confusing me
Hello. It sounds like you have an internal leak in the injection unit. This is very common. The poppet valves stick and cause this to occur. If the pump is isolated and holds pressure then it is the injection unit....
Question
What does abs mean
ABS is the acronym for Anti Lock Braking System. It's a safety feature that uses computer control to prevent individual wheels from locking up under hard braking. A wheel that is sliding will not steer, so ABS fixes the old...
Question
Car dings while turned off
It sounds like you may have an alarm of some kind going off in the vehicle, which may indicate something may be wrong such as low fuel or potentially a check engine light coming on. Generally, the check engine light...
Question
transmission not engaging correctly
Hello, thank you for writing in. Considering the age of the vehicle, the transmission may need to be serviced. This would include a fluid and filter change. During that process it can be inspected for signs of wear and obvious...
Question
97 safari code for crankshaft position sensor replaced it still doesn't stay running
It is possible that the misfiring cylinders could have low compression. I would recommend havong a compression test done on the engine to check for bad piston rings and valve seats. If there is low compression, the engine will not...
Question
Van turns over but won't start guy told me it was ignition module but replaced the part but still won't start
Hi Nicholas. Generally speaking, when you're able to turn the key and the starter engages, but will not ignite the engine, it will be related to a fuel or ignition system component - or combination of them. Some common parts...
Question
1991 s10 cranks but no start
Hello, thank you for writing in. You may want to start by making sure your air intake and throttle body are all clean and working well. Then, perform a compression test to make sure the engine itself is not your...
Question
I had put gas in my truck last night and now my gas light went on and i just put gas in and the light is still on what can it be?
Hi there. If your gas light was on prior to putting fuel inside your Blazer, it's possible (yet unlikely) that the fuel sensor in the tank may have been damaged if it was really low on gasoline. Sometimes a faulty...
Question
Hello I have a 1999 GMC Jimmy I have got the water pump change the battery and the fuel pump changed as well right after I got the
In the majority of vehicles, engine idle speed is controlled by an idle control valve (ICV). The ICV valve can fail or a faulty or blown fuse in other electronically controlled systems can cause the IAC motor to malfunction, leading...
Question
I've changed both solenoids and the internal shuttle valves for my 4L460E transmission but I still can't get second gear to engage
If the transmission won't shift to second gear, possibilities range from a leaking clutch piston to faults in the valve body. There is a possibility of an issue with external electronic controls, too (all of that is covered in the...
Question
Oil leaking from valve cover area, water leaking from lower water pump hose. All with engine surging at highway speeds.
I would recommend having the leaks resolved first. It is possible that the engine may need to be rebuilt if the oil is leaking internally.
Question
Smoke
If you suspect the wiring is shorting out and there is a chance of a fire then i recommend you disconnect the battery until you have a mechanic like one from YourMechanic check it out for you. If you have...
Question
Starting in humid morning
On a marginal ignition system, condensation on ignition system wires and components could cause voltage to bleed away just enough to make starting difficult during the humid conditions you describe. If the problem persists, the recommended service is a no...
Question
I have 2005 blazer all of sudden doesn't run on drive but in 3rd gear it runs fine what should I do
What you are describing is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer...
Question
I have a 1998 4.3 V6 in my 1982 Jeep CJ and completed CA SMOG certification in 2007. When I had the ECM programmed and passed smog
I do believe that changing the vin back to the vin from the engine is likely to solve this problem. If not, a reflash is likely to solve the problem in the event that changing the vin back does not...
Question
Lack of power and engine is roaring
What you are describing sounds like you may have a clogged or damaged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When the catalytic converter is...

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