Bleehobbs

I had a small wreck Tuesday with some minor front end damage mostly top damage. I’m looking for ideas of what has happened mechanically as the wreck wasn’t even that severe. The impact was a bit hard but still not much damage visibly.

So start the car it idles up to 2000 rpm slows down to its normal 800 or so within a few seconds & it stalls. I unplug the MAF and the car idles up to 3,000/4,000 rpm’s, however it does not miss nor does it stall. I thought maybe it’s the MAF but why would it idle so high? When putting the car in drive with MAF unplugged I get reduced engine power message on the dash but the car still never stalls. Hook the MAF back up and stalls. I have also noticed that my brake pedal is stuck to the floor, at times when pushing it the car will accelerate in rpm’s or when driving home I would hold the brakes to the floor and the car would try to accelerate? I have wondered about the throttle body as it was close to the impact point. I have also unplugged the battery and plugged back again. Car has no issue with starting and I would say fuel pump however you could keep it running and drive it if need be. Any idea why the brake pedal is to the floor?

Bleehobbs

All these problems & it’s not even that bad!
When the wreck happened I drove the car off the road I put it in park & it started missing and then stalled & that’s the last time it ran well. The ac condenser is busted but the radiator and hoses are all fine even.

Bleehobbs

Also I’m sitting at 150k even .. coils & plugs replaced at 130k Delphi coils & NGK plugs. After leaving the battery off for awhile the brakes have freed up some but still mostly to the floor. I have checked all fuses to make sure they were seated well. All fluids checked & good. Ac condenser of course is toast but will take care of that later on. I noticed that maybe the gas pedal looked a little lower to the floor than usual am going to do the push pedal 5 times reset and see how far it goes down.

Bleehobbs

Bad knock sensor? Noticed it’s down and under the throttle where the car took the biggest blow.

Oldblue

Wrong spark plugs, AC Delco 41-103 iridium plugs. Tighten the 4 bolts in the under hood fuse box. Check for loose or damaged wire harness. Inspect the rubber elbow at the throttle body for damage.
Glad you’re ok!

firemangeorge

5 time pedal push reset ? Never heard of such a thing on a HHR.
As Oldblue stated, wrong plugs. Ecotec engines only like the AC Delco Iridium’s.
Also. You should pull the codes. I’ll bet there are some in the OBD system that will point you to the problem.