sons 96 626 trouble reaching hgwy speeds. if he wasn't buckled in he would be bounced all over the interior. Once he gets up to speed and hit cruise he's okay. can any diagnois the problem?

 

may be the throttle position sensor going bad

 

Go to Autozone and have the codes pulled. Check pending codes also.

 

I just put money down on a '97 626 w/4 cyl and plan to pick it up on Saturday (9/8/07). On the test drive the car would surge big time upon acceleration; my Daughter was with me and she thought I was bouncing the gas pedal up and down. It seemed fine up to about 25 MPH, but after that it was real jumpy (seemed like I was playing with the gas pedal). At one point I held it to the floor and it seemed to be holding back... I could only get up to ~67 MPH on a fairly decent stretch of road.

The dealer had a code scanner (cheap one) and car had a code of 'Lean Bank 1' and something about 'Warmup Catalyst too low'.

The surging seems similar to your problem. Please post the solution once you get it figured out. I will post my solution once I get it resolved.

Thanks,
Kevin Thom.

 

Well, I figured mine out... might be same problem on yours.

First I put a new Bank 1 Oxygen sensor in (universal @ $65, but had tosolder wires). No help, but good to replace it anyways at 108K miles.

Decided to take a look at MAF. Didn't see the little sensors at first, but decided to take off toppart (black plastic enclosed squarish electronics part that connector plugs into); two special (torque w/center post) screws were tough to remove, but used needle nose pliers to twist them out. Sure enough, I found two little sensor wires when I pulled it apart. Couldn't hardly see them, but one looked gooked up. Used some very old freon TF solvent I have to spray the sensors & worked good (parts stores sell something too). Put it back together and now it runs fantastic... Zoom, Zoom.

Kevin.