After some work was done on my van I noticed it would hesitate at 4000rpm. I thought it was something to do with the engine work but could see anything out of place. So I checked the fuel filter (replaced it), even put a fuel gauge on the engine and drove it to see if fuel pressure dropped and it didn't. The plugs and wires were all good.
After further inspection I found it prevents it from revving over 4000rpm in 1st, 2nd, or 3rd, and in Park load or no load. I assume its supposed to do this in Park to prevent over revving of the engine. I then borrowed a scan tool to check for codes - no codes.
I then pull the air intake off and unplugged connectors, tps, MAF, air temp, trans connectors etc. Looking for maybe a bent over pin or something. Couldn't find anything out of the ordinary so I put it back and test drove it again. Bingo it worked and worked fine for 10 months. Then it started again. And I can't seem to find what's wrong.
Does anyone have any suggestions. I have drove it as is for sometime (30,000 miles)as its fine most providing you're not trying to race someone off a red light! However I now want to sell it and I would like it in working order to get more money for it.
Thursday, April 14th, 2011 AT 6:41 PM