2003 Buick Rendezvous misfiring, sending no signals/codes. What could it be?

75

Asked by May 19, 2015 at 08:22 PM about the 2003 Buick Rendezvous CXL FWD

Question type: Maintenance & Repair

I have a 2003 Buick Rendezvous that i bought in feb of this year. All was good til about March when it started miss firing. It wouldn't send a signal though and the engine light would never come on. Someone told us change engine control module, we did worked perfect no more missing. Few months later same thing. So got a brand new module. Started happening again so we started changing coils being it finally sent a code saying 4 was misfiring. All coils have been changed now and it is still misfiring/jerking when you drive. If i let the car sit and warm up for about 20 minutes, it does fine, but to crank it and go it takes about 20-30 minutes for it to stop misfiring and drive right. What else could it be?

18 Answers

23,210

Did you change the spark plugs and wires also? Check the throttle plate(butterfly) if its dirty clean it with carb cleaner. They get a film built up on them and can't close all the way. So on cold starts when it should be closed it can't because of the film on the throttle plate.

1 people found this helpful.
75

No, plugs and wires haven't been changed. I'll try these things and see if it helps! Thank you :)

23,210

No problem. Good luck!

75

Well its not the plugs and wires. Those are brand new.. My dad is actually my mechanic, and he replaced those the last time we did a coil. And throttle plate is clean :( With it not throwing a code, i dont want to spend tons of money just replacing things

1 people found this helpful.
23,210

It could be the crank sensor, cam sensor, throttle position sensor or even the ECM ect.

1 people found this helpful.
75

ECM is brand new that was one of the first things we replaced. The crank, cam and throttle would those make it to where it misses while driving? I've gotten to where we go and warm the car 30 minutes before we drive it so it doesn't do the jerking/misfiring and it runs fine. But if we start it and go, theres always a misfire/jerking.

1 people found this helpful.
75

Also, reading about the cam senor i think it was, when all the problems first started the car would be jerking while driving and then shut off. But when we changed the ECM the shutting off stopped now it just jerks(misfires) if that makes sense

1 people found this helpful.

Did you ever figure it out? I'm having the same issues.

75

Yes, it was the hose next to the ECM. there was a hole in the hose and spraying the ECM. We didn't figure it out until we changed every last one of the plugs and wires and coils. Changed the hose finally and it stopped. Nothing since then and its been over 2 months. NOW if i can get my ABS an Traction to act right!

Your AWD light wouldn't happen to be on, would it? Mine has been on in addition to the issue you were having.

I'm having the same problem.. do you know what that hose was called that you replaced?

75

I'm not sure, I will have to ask my dad. I just know it was the hose right there near the ECM. As far as traction I've given up on that. Lol we've tried just about everything.

The abs and traction light issue ended up being the hub assemblies. I am now having the misfire issue which is how I ended up here. Lol Hate this suv.

In the 2002 Buick Rendevous they made the wiring too short to the wheel hubs and the wires break.I had all those lights on and after replacing the hubs need a special torque wrench which we rented.No lights and all repaired. I got all the hubs from detroit axle on ebay for 1/2 the cost of part stores and warranty for one year

20

So what hose was it causing the misfires?

2 people found this helpful.
40

Its only the mass air flow sensor its really easy its the same problem on all buicks

2 people found this helpful.
40

Its says misfire but is not

2 people found this helpful.

My car will start but when it runs is misfiring it's it's sounding rough it's running rough 2002 Rendezvous Buick what causes the misfiring

Your Answer:

Rendezvous

Looking for a Used Rendezvous in your area?

CarGurus has 669 nationwide Rendezvous listings starting at $650.

ZIP:

Buick Rendezvous Experts

  • #1
    jimmypd65
    Reputation
    750
  • #2
    Bilhar
    Reputation
    670
  • #3
    Tom Demyan
    Reputation
    630
View All

Related Models For Sale

Used Ford Escape
1,156 Great Deals out of 104,149 listings starting at $1,995
Used Ford Explorer
871 Great Deals out of 66,084 listings starting at $1,275
Used Nissan Murano
361 Great Deals out of 26,729 listings starting at $1,500
Used Nissan Altima
852 Great Deals out of 62,201 listings starting at $1,000
Used Jeep Grand Cherokee
1,129 Great Deals out of 77,929 listings starting at $1,000
Used Honda Odyssey
417 Great Deals out of 34,647 listings starting at $1,200
Used GMC Envoy
37 Great Deals out of 1,606 listings starting at $1,990
Used Toyota Camry
851 Great Deals out of 70,814 listings starting at $1,300
Used Honda Pilot
350 Great Deals out of 45,790 listings starting at $750

Used Cars For Sale

2007 Buick Rendezvous CXL FWD For Sale
43 listings starting at $2,700
2006 Buick Rendezvous CXL FWD For Sale
25 listings starting at $1,988
2005 Buick Rendezvous CXL FWD For Sale
20 listings starting at $2,495
2004 Buick Rendezvous CXL FWD For Sale
16 listings starting at $650

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.