Possible Major Problem!!!!!!!!!!!!

This might be simple.......I hope! Got in the VX this AM started her up. worked like a champ as always. Put'er in reverse and she died immediately. Back to park, started right up. reverse.... died immediately, repated this drive died immediatley, neutral started, back in gear... died. Had to leave for work so took the old truck. Going home in the morning to figure it out but don't know where to start, any suggestions? last week I threw a trouble light, dx'd as code for manufacturer installed emmissions control. but, this code went off with next start up, and did not recur. thanks guys for the help. Chris Covey

Sounds like the MAF is unplugged or has fallen off the intake tube.

Checked the MAF, all appears to be intact and connected properly, I had driven the VX the night before, >100 miles without any problems, and it still starts up like a champ, will rev up, run smooth, no detectable problems....until I put it in gear. then it dies, runs/starts fine in nuetral too. any other suggestions.... please!!!!!
just ran the codes, P1404, P0101... Manufacture controlled auxillary emissions controls, and MAF or VAF ckt range/perf..................any input?

Tone, using the reference to MAF you gave me plus the reference disc (also courtesy of you) Iremoved and cleaned the senors circut with electrical cleaner. While I was at it I also cleaned and lubricated (with electrical lube) all other circuts of the emmisions control system (o2 sensors etc). when I was finished the VX started and ran like a champ! So once again thank you for your commitment to service knowledge of the VX. I was serious about the beer! I plan to catch up with you sometime at a VX meet or somewhere. When I do, the drinks are on me! My new job allows me alot more free time now, I only have to work 119 days a year at my primary job! So, keep me posted on any meets you plan to attend. Thanks again!

Well it ran fo a day after cleaning the MAF, then same problem occurred, I replaced the MAF sensor, but no help. Going to check the fuel pressure next, any other suggestions? Has anyone else had this problem? Now even if it starts in park, it won't stay running when I give it gas.

I've had a problem close to yours, but mine one day wouldn't start at all. I found the fuel pump fuse (under the hood on the right side) was blown. I had a shop check the fuel pressure and it was low(can't remember the pressure). I replaced the fuel pump and have had no problems since, and it was over a year ago...Good Luck

Did it happen after a fillup?

as a matter of fact it did happen after a fill up, I got gas, drove about 3 miles home, parked in the garage. The next morning she started right up, but when I put it in gear she died. I have now checked the fuel pressure which appears to be ok (40 with engine off, ignition on; 30 with engine running) and I changed the fuel filter... also funny thing.... I threw a code briefly today, P0101, (fuel/Air metering), I cleared the code so that I could run a monitering scan with my obdII system. and when I started the truck it did not throw any codes, all systems checked out, and it ran fine (around the block). so this may be an intermittant problem, trouble is now i don't trust it to drive anywhere. Already had to pay one towing bill. Would really like to figure this out and get it fixed.

Also, anyone know what "CKT range/perf" means on an OBD II system. I can't figure this one out?

what is the Pxxxx number?

here is a pdf of error codes
http://www.actron.com/publish/2005/0...lish_16298.pdf

wisdom the code was p0101 and I found out that ckt means circut (I actually have 2 of the actron scanners, 1 pocket scanner and 1 "big daddy" that reads live data) I thought it was the MAF because of that code, but I replaced the MAF and the problems persisted. I checked all the wiring, seems to be intact but..... That code tells me otherwise Acording to the live scan my MAF is measuring1.4 at idle, and increases with throttle so it would seem that the circut is working..... I am about to give up......There is an import specialty shop near me..... But I don't have that kind of cash at the moment, any other suggestions?

Is 1.4 in spec? If you use the Workshop Manual CD it walks you through a number of tests to properly isolate the problem.

Try the following: http://www.vehicross.info/forums/sho...4&postcount=15
By the way, did you checked your air filter? It could impact as well if it is enough dirty.
Also check the intake air tube for cranks. If it take some air beyond MAF somehow the engine might fail to run properly as well.

If it happened after a fillup it might just be bad gas. Hook your fuel preassure tester back up, run the purge hose to a safe location, make sure you dont have any leaks, start the viehical. Put a zip tie around the purge button and drain the tank with the engine running, check the fuel if it smells at all bad thats probly your problem, it could also have alittle water in it. If that dosnt help, ill run you through some more things to check. Also check all of your plugs in your electrical system, throw some dialectric grease on every plug you can find. Ive even done that to all of the tranny plugs. Electrical problems are a bitch to diagnose when you have bad conections. Spend an hour or 2 going through it all. Trust me, ill help you fix it, screw paying some one to fix your VX. I also had a problem with the wiring harness near the tranny, it melted because the factory has it to close to the exaust, it caused tranny problems. If you have a short when you put it in gear that could also cause problems. Does it stall when you put it in drive, or just reverse.

Talk about a pain in the A**!!!!!!!!!!!!! Well after multiple tests and diagnosing I decided to try another MAF from a different location than the original "new" one I purchased thru advance. (The code for MAF kept coming up about 20 times) Turns out Advance sold me a defective part!!!!!!!!!!!!1 Got the second MAF in from Autozone and Now she purrs like a kitten! or maybe it should be called a roar cause It seems to me that I gained back some power that I didn't know was lost. Also while I was at it I changed the spark plugs which I had neglected to do for the first 95,000 miles. I put in iridium plugs ($12 each). Talk about an improvement to throttle response and power it is noticeable with these plugs. They actually gaurantee an increase of 10hp but I had my doubts about that. But, after putting them in.......its possible. Anyway, thanks for all the suggestions! :mado: :mado: :mado:



Hey Tone, did you get my email about the lights? Still haven't heard back from you. :?: