Mar
09
2010
I have a 2003 Chevy 3500 mini school bus. It has a 5.7 L engine with the Check engine light on. It runs, but seems to miss every now and again, especially when going up hill. The check engine light flashes sometimes and sometimes it goes off.
Summary: We took it to the Auto Repair Shop and they scanned the codes for us. It had no current codes which made sense because the check engine light wasn’t on, but in the History codes there was Code P0300 Misfire Detected. The shop put the bus under load and code see multiple misfires on the scan tool and suggested a complete tune up. It has not had one and has 94,000 miles on it.
Fix: The shop Replaced my spark plugs, Plug wires, distributor cap and rotor. I’ve been driving it for weeks now and haven’t had a problem since.
Feb
02
2010
i have this astro mini van when im driving i get good heat but when i at a stop the heat goes to very little heat coming out vents , ive changed the thremostat , it dont over heat . any thoughts on what could be the problem
Response:
A loose drive belt, a glazed belt, a weak water pump, a restricted heater control valve, an internally collasped heater hose, a partially plugged heater core, wrong size heater hoses, a duct or door not opperating correctly, proper T stat.
another thing you should try in the defroster that will not only increase the fan speed but should heat the car alot faster.
there could also be the possibality that your high blower is only working on low all the the time.
Jan
18
2010
I have a 1989 f250 5.8 the hose that hooks to the check valve blew out and where the deverter is connected it melted and the connection came off and hot air from it melted the top of the oil cap am I right in thinking the check valve is clogged and where can I find a diagram of the California emissions system for 1989 f250 5.8
Response:
I’m guessing you are referring to the PCV valve that plugs into a grommet on the valve cover. This is a 2 buck item, but if you shake it and hear a rattle, it’s working. Just replace the melted stuff, and connect it back together. As for the CA stuff, Google works for me. Or the dealer should have a copy of it.
check valve allows air or liquid to pass in one direction only. Remove it, blow in both ends. If you can blow thru it from both ends it’s bad, if you can’t blow thru it from either end it’s bad. If you can blow thru it in only one direction, it’s good. As far as the second valve, don’t know what it is.
Maybe he is talking about the EGR valve. Vacuum controlled valve to allow exhaust gas to enter the intake.
The diagram of the emissions control system should be under the hood on a sticker. A dealer can supply a new sticker or photocopy from their manual.
Nov
17
2009
We have a 1999 GMC Savana conversion van that has been giving up problems when we go to start it. It doesn’t start the first time you turn the key, but usually does the second time. Two years ago we had the fuel pump replaced and it seems that ever since then we’ve had this problem. The gas gauge needle will also shake and when you fill the tank full of gas the needle goes way beyond the full mark and when the needle gets to the red mark you’d better get gas SOON.
Any ideas on what this is? Could the fuel pump have been bad to start with?
Response:
It sounds to me that when the Fuel Pump was replaced that the intermediate wire harness that goes from the top of the sending unit to the pump was not replaced. This explains the gauge flux and the starting problems. Also, it will NOT show any Codes. Time to drop the gas tank AGAIN.
