19 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCleaning MAF and tightening air intake bolts
Leading reported evidence
Clean inside of the airbox
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing.
Leading evidence: 'Clean inside of the airbox' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check hoses' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Does anyone have experience cleaning the MAF and tightening the air intake bolts.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
19 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Does anyone have experience cleaning the MAF and tightening the air intake bolts. I am having problems with CEL 1128 and have tried everything, cleaning the air box, changed to K&N filter, check the hoses for leak etc. People said I should clean the MAF and tighten the air intake bolts. Anyone know how or can provide guidance?
Changing to a K&N filter is NOT going to make the code go away and if anything it will induce the code since it is an oiled filter. Depending on what year your car is and miles it has yo may just acutally need...........drumroll.............a new MAF!
Remove the MAF and spray with carb cleaner, starter fluid or electronics cleaner. Let it dry and put it back in. Remove negative battery cable for a few minutes to reboot computer and then reconnect. You should be good to go.
I just had to have mine replaced... i still have the old one. It looks brand new. Does anyone know if its possible to test it on the benchtop ?
Dell: You said "Depending on what year your car is and miles it has ..." Do these things age, or are they more prone to failure on older cars.. ? I have a C4 Cab with 12,000 miles.
Since it is so simple to replace, I would clean the old one and put it back in. Chances are that it is fine. You would them have a known good one as a spare which hopefully you will never have to use..
Is cleaning the MAF something that should be done regularly, say once a year....or only if there is a problem? I like the idea of 'smoother' but does it really make that big a difference? Meanwhile, I also read that some suggest running a fuel system cleaner like Techron through the car annually also.
I'm just wondering if most think these types of things are wise to do, or a waste of $$$$$.
Cheers.
Personally, I clean mine with every oil change. It will get dirty no matter what filter you use. Most often, the amount of dirt does not reach the threshold level where a CEL is generated but a dirty MAF can effect idle and smoothness even without the CEL. You;ll find it helps smooth any car out that uses the hot wire type MAF. I clean the 2 on my BMW regularly also.
New '99 c2 owner here...
Over the weekend I noticed when accelerating hard in any gear... once I got to about 5K rpm the car doesn't continue to accelerate smoothly. It sorta stumbles.
So I tonight I pulled the MAF sensor and cleaned it with carb cleaner. The element was a little dirty but not filthy. After letting it dry, I put it back in.
The car seems a bit smoother but the "stumble" is more consistent. Once I pulled into the garage, the idle fluctuated between 500-1100 rpm....almost stalling but didn't.
So is the MAF toast?
Quote:
Is cleaning the MAF something that should be done regularly, say once a year....or only if there is a problem? I like the idea of 'smoother' but does it really make that big a difference? Meanwhile, I also read that some suggest running a fuel system cleaner like Techron through the car annually also.
I'm just wondering if most think these types of things are wise to do, or a waste of $$$$$.
My car chokes in low speed on cold weather starts before I clean the MAF. It was good timing for me to do it two weeks ago because we are in the 20's these few days.
Cleaning the MAF is definitely easy and cheap. I'll do it every year.
The funny thing is that if you do a lot of maintenance you don't feel the car running any better. However, if you don't do it you'll find out little things that worry you from time to time like car not running smooth in cold starts.
Had some free time today so I took out the airbox and cleaned everything, boy does it get dirty. I cleaned out the throttle body, I cleaned the MAF, I cleaned the inside of the airbox, cleaned the outside of the airbox, tightened the throttle body bolts, and cleaned all the tubing. Made sure all the excess oil off the K&N was gone and put everything back together. Started the car, there was a little hesitation then in started, a little rough then quieted down. Purred like a kitten.
Hope this helps with the CEL. I will keep everyone updated.
Well...I pulled the idle solenoid out and sprayed it down with carb cleaner....then sprayed the two holes on the side of the throttle body. Boy was it dirty.
Put it back together and seems to have taken care of the idle problem....we'll see tomorrow if it helps the hesitation during hard acceleration.
er....what's a 'MAF'?
And also, what is a 'CEL'?
I just installed a new air filter in my 85.5 N / A and now it hesitates on acceleration.
Any connection?
you shouldn't need it at 12k miles. it's something that will fail as it get older as all electronic sensors. Having a K&N just accelerate it by putting oil on it.
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